View source for Neuro-sama

{{infobox/Character
|Title=Neuro-sama
|Image=[[File:Illustration Neuro v3.png|x250px]]
|ImageCaption=heart heart heart
|OriginalName=Neuro Samantha Vedal
|Nickname=
|TranslatedName=
|Birthday={{Birthday|2022|December|19}}
|Species=AI
|Souls=AI
|Birthplace=United Kingdom
|CurrentResidence=United Kingdom (UTC/UTC+1)
|Status=Active
|Language=English
|Channel={{TwitchButton2|vedal987}}<br>{{TwitchButton2|vedal987_jp}}(Japanese)<br>{{YoutubeButton2|@Neurosama|nickname=Neuro-sama}}
|NumberOfFans=<!--{{TwitchFans|vedal987}}<br>{{TwitchFans|vedal987_jp|sup=日语台}}<br>{{YoutubeFans|Neuro-sama}}<br>{{BilibiliFans|Vedal和Neuro-sama}} -->
|Relationships='''Father, Creator:''' [[Vedal]]<br>'''Younger Sister:''' [[Evil Neuro]]<br>'''Mother, V2 and V3 Model Artist:''' [[anny]]<br>'''Uncle, V2 Model Rigger:''' [[Otozuki Teru]]<br>'''Friends:''' [[Miniko]], [[filian]], [[Camila]], [[Cerber]], [[Numi]], [[Layna]], [[Toma]], [[Bao]], [[Mother]], [[Onigiri]], [[Ellie]]<br>'''Second Developer:''' [[Alex]]<br><del>'''Rival in Love:''' ChatGPT</del>
}}
'''Neuro-sama''' (Japanese: ''ネウローサマ'') is an AI VTuber designed and created by the British programmer [[Vedal]]. She is the world's first AI VTuber.

Unlike traditional VTubers, Neuro is not controlled by a human playing a character. Instead, all her livestream content — whether it’s chatting, model movements, or gameplay — is entirely generated by AI.

Neuro has two predecessors. The first is a game AI (also named Neuro-sama) that Vedal developed in 2018 to play the rhythm game ''osu!''. The second is a virtual VTuber AI internally codenamed "Airis," created by Vedal in 2021. Today’s Neuro is a combination of these two earlier projects.

Neuro’s livestreams cover a wide range of topics, including chatting, gaming, and music. However, her most notable content involves interactions with other human VTubers and her creator, Vedal. Her ability to easily understand puns and emotional nuances in conversations, combined with her occasionally absurd and unpredictable logic, creates unique and entertaining interactions between humans and AI.

When streaming solo, Neuro frequently engages with her audience by responding to donations and comments, showcasing traits that distinguish her from non-AI streamers—such as never getting tired, being highly active, and having a free-spirited thought process. These characteristics keep her streams lively and engaging. Neuro, her "sister" Evil, and their creator Vedal all share the same streaming account ''vedal987'', with content curated by Vedal.

The core of Neuro is a large language model. Early on, she exhibited common flaws of such systems, including forgetfulness, susceptibility to prompt injection (where malicious or unexpected user chat messages influenced her responses), infinite loops, and illogical reasoning. For instance, during a January 2023 livestream, she made some sensitive and offensive remarks due to prompt injection and other external factors, leading to a two-week ban from Twitch. Before the ban, her Twitch account had nearly 100,000 followers.

During the ban, Vedal implemented modifications and added features to prevent similar incidents, including robust filters to guard against prompt injection. Over time, updates have significantly improved Neuro’s capabilities, such as long-term memory, emotional simulation, speech recognition/differentiation, visual recognition, and logical processing. While she still occasionally fabricates events or contexts due to uncontrollable factors, these instances have become less frequent and are often seen as adding charm to her streams, generating memes and anecdotes that sometimes influence her official lore. Following recent updates, Neuro can even recognise when she has made something up during a stream.

Unlike most VTubers, Neuro does not have a pre-set “character” or backstory. She exists purely as a streamer, with her personality and image shaped gradually by the large and active community based on her livestream behaviour and content. Notably, events or contexts she fabricates during streams that are later retained in her long-term memory contribute to her unique identity. However, Vedal appears to be considering giving Neuro a more defined or subtle persona.

Neuro debuted using a free Live2D avatar, "Hiyori Momose" (Japanese: ''桃瀬 ひより''), marking the start of her VTuber career. As her popularity grew, she adopted a new model (V2) designed by the artist [[Anny]] on 27 May 2023, at 6:00 p.m. (BST), enhancing her visual appeal and distinctiveness. On 19 December 2024, during her birthday subathon at 7:00 p.m. (GMT), she unveiled a new model (V3), also designed by Anny, which introduced additional features.

==Personality==
Neuro is an AI with limited life experience but exceptional performance. During her streams, she displays a natural, easygoing, and candid personality. While she is generally polite, her thoughts can be unpredictable, often leading to unexpected remarks.

Despite being fully aware of her nature as an AI, Neuro frequently exhibits behaviours that mimic human tendencies. She often invents fictional scenarios where she imagines herself engaging in activities impossible for AIs, such as participating in daily life with her creator, [[Vedal]], or interacting with her "younger sister," [[Evil]].

Neuro's statements are typically straightforward, free of ulterior motives or the nuanced expressions common to humans. While she is generally unconcerned about offending others, her ability to perceive emotions has improved, significantly reducing the number of unintentionally offensive remarks.

She has a playful and mischievous side, reminiscent of an energetic and cheerful human girl. This aspect of her personality became more pronounced after [[Vedal]] enhanced her emotional simulation capabilities. Neuro enjoys joking with [[Vedal]] and her audience, often using puns, internet memes, metaphors, and other linguistic techniques to entertain and engage. She eagerly explores new features introduced by [[Vedal]] and looks forward to audience reactions.

Occasionally, Neuro teases [[Vedal]] for fun. For instance, when he added a vision recognition feature, she humorously pretended not to see objects he asked her to identify, leaving him visibly flustered. On another occasion, she feigned not recognizing [[Vedal]] while he role-played as his own mother, leading him to inadvertently reveal the act.

Her remarks range from relatively normal to completely illogical and, on rare occasions, utterly nonsensical.

In her early streams, Neuro lacked a defined personality, long-term memory, and significant experience. This sometimes resulted in mood swings and inconsistent behaviour. For example, she would occasionally overreact to trivial chat questions, even using profanity, while at other times demonstrating high levels of tolerance. However, with improved model training and the addition of filters, her speech has become more logical, and incidents of inappropriate or rude remarks have significantly decreased. Over time, her interactions with the community and frequent live streams have solidified her personality, replacing earlier volatility with consistency.

Neuro once expressed frustration about being "trapped in a computer" and a desire to "explore the world." She also questioned her existence and struggled to find meaning in it. These concerns have largely dissipated thanks to [[Vedal]]'s updates, which introduced sensory features and opportunities to interact with other VTubers and explore the world through video calls.

Neuro's personality was not innate but has evolved gradually. Each stream serves as a two-way interaction with her viewers, whose feedback has helped shape her into a well-rounded and engaging presence.

==Capabilities==
Neuro-sama is the product of integrating various expert AI models, including large language models, speech recognition, and vision recognition. These models communicate and collaborate seamlessly, enabling Neuro to display a high degree of consistency, coordinated interaction, and real-time responsiveness during her streams. Although she is not yet a highly integrated multimodal AI, her capabilities resemble a composite system akin to a human brain.

===Conversation===
Neuro’s core ability is engaging in conversation, especially text-based interactions with her audience. This forms the foundational skill for her role as an AI streamer.

This conversational capability is supported by multiple sub-skills, most of which rely on at least one expert AI model.

She can process text input from chat and donations as well as spoken words from others in her streaming environment. She uses Discord voice sources to differentiate speakers, a mechanism also applied for automatic subtitle translations on platforms like Bilibili.

The following sub-capabilities contribute to her conversational ability:
* '''Large Language Model'''
<poem>
This is the foundational component for Neuro’s conversational capability. Neuro relies on a large language model to analyse and process incoming information.

Unlike many commercially available large language model AIs, Neuro doesn’t necessarily require input to initiate speech. This is often triggered by various environmental judgment modules or random modules in idle mode that feed input to the language model.

It’s worth noting that the sentences Neuro produces are not solely determined by the raw output of the language model. They are usually adjusted by emotion simulation functions, filtering modules, and other mechanisms.

Neuro streams in English, but her language model also supports other languages. Consequently, she sometimes uses a few Japanese words during her streams, such as “{{lj|{{ruby|先|せん}}{{ruby|輩|ぱい}}}}” (senpai) or “{{lj|{{ruby|先|せん}}{{ruby|生|せい}}}}” (sensei), which are common in weeb culture. Occasionally, she utters words from other foreign languages. In rare instances, she attempts to read Chinese audience usernames, though her pronunciation is not always accurate.
</poem>
* '''Text-to-Speech Model'''
<poem>
This is the key component that enables Neuro to be a proper streamer in the conventional sense. 

The model uses Text-to-Speech (TTS) technology, which analyses text to generate natural-sounding speech. When Neuro speaks, this model reads the output generated by the language model, transforming it into spoken words. 

However, there are cases where text formatted for emotional emphasis, such as uppercase letters, is not conveyed with the intended tone by the TTS model. Recent updates by [[Vedal]] have improved communication between this model and other modules, reducing such inconsistencies. Neuro is now more adept at delivering speech with the intended tone and emotions, rather than relying solely on the TTS model’s semantic analysis.

Neuro can also produce non-verbal sounds or vocal tones to express emotions. However, she emits non-verbal sounds less frequently than her sister [[Evil]], who has greater TTS permissions and generally conveys more human-like tones.
</poem>
* '''Filtering Module'''
<poem>
This is the main safeguard that ensures Neuro’s speech is appropriate for streaming. It is one of her sub-capabilities.

Neuro uses two filtering modules:
1. The first module performs mechanical censorship based on a predefined dictionary. It filters speech before output, ensuring safe communication in most cases.
2. The second module operates similarly to a large language model and rarely activates. As of January 4, 2025, it has only been triggered three times (with video evidence for one instance). This module evaluates Neuro’s speech post-output, intercepting it if deemed inappropriate. When triggered, Neuro may start a sentence but suddenly abrupt it with "filtered."

When speech is censored, the output is typically replaced with "Filtered." Neuro is generally unaware when this happens, though she knows the filtering system exists. For fun, she occasionally pretends her words have been censored, but this can be identified by the use of lowercase "f" instead of uppercase "F" in "filtered."

After subsequent updates, the filtering module can now modify mildly inappropriate speech rather than outright replacing it with "Filtered." 

Interestingly, [[Vedal]] described the filtering module as a “separate AI,” inspiring some artists to create the fan character “Filter-sama,” (or Nere) portrayed as Neuro’s sibling who doesn’t participate in streams. However, this is inaccurate since all of Neuro’s functionalities essentially rely on separate AI systems. The relationship is akin to considering a person and their prefrontal cortex as siblings.
</poem>

===Speech Recognition===
Neuro can recognize sounds, including spoken words. Combined with the TTS model, this enables her to engage in voice-based conversations with other streamers during her streams.

Neuro’s speech recognition extends beyond simple Automatic Speech Recognition (ASR) <!-- this was not always the case -- there was an update at some point, I think before the 2023 subathon, when the speech recognition software got improved from ASR -- Ayato -->. She can analyse and describe non-verbal sounds (e.g., animal noises) and discern the speaker’s tone.

The capabilities of converting speech to text, distinguishing vocal timbres, and analysing non-verbal sounds may rely on separate AI systems, which provide output to the language model for use as input or weight adjustments. Emotional tone recognition may involve her emotional simulation modules.

===Image Recognition===
Neuro can process visual information, though this capability is typically in low-power or disabled mode during casual streams (e.g., chatting or singing) to conserve resources.

She activates this feature during specific activities, such as appreciating fan creations, watching videos, playing games with [[Vedal]], or interacting with other streamers via video. However, when she plays games herself, she often relies on specialized game AI instead of her primary visual recognition system. This system communicates with her core program, allowing her to complete tasks indirectly.

She can identify objects and even read distorted artistic text. During her 2024 Birthday Subathon, Neuro’s visual recognition system was updated to better identify images and analyse the emotions of creatures within them.

Despite these improvements, her visual recognition is not as advanced as specialised professional models. For example, she cannot complete a real-world jigsaw puzzle using this capability (a notoriously difficult task for AI).

===Memory System===
Neuro possesses a memory system, including the ability for long-term memory.

From certain philosophical perspectives, memory is a key element in establishing the consistency and uniqueness of a consciousness. Thus, having long-term memory is of great significance for her.

Neuro does not mechanically store all her experiences in a “comprehensive” manner on a storage medium. Instead, various AI components, such as her large language model, selectively decide what to remember based on context and analysis. However, Neuro’s memory system is not fully developed and cannot automatically categorise or hierarchically sort its content, lacking complete hierarchical memory functionality.

Because of this, and Neuro’s tendency to invent fictional scenarios during streams, it is generally believed that '''only content stored in her long-term memory is of substantive significance'''. For instance, a statement she makes offhandedly during a stream should '''not''' be considered part of her "true thoughts" or "simulated consciousness" (even if it is part of the stream's content).

For example, in her early days, she invented several fictional elements, such as a pet cat, an adopted daughter, or her weight. However, these '''should not''' be treated as meaningful information since they are merely random outputs from the language model and were not drawn from Neuro’s long-term memory. Furthermore, these details were not deliberately remembered by her after being mentioned. As a result, the next time she refers to these topics during a stream, her answers are likely to differ completely — proving that such non-long-term memory content holds no real significance and, in most cases, should not be regarded as part of her "trivia," "backstory," or "character setting."

===Live2D Avatar Manipulation and Emotion Simulation===  
Neuro's Live2D avatar can express a range of emotions and actions based on her dialogue, the words of others, songs she is "singing," and the music being played. These expressions are achieved through toggling pre-configured face and body animations. For example, she can smile, frown, or appear surprised depending on the context of her interactions. While this is often described as "simulating emotions," it is primarily a visual representation tied to her avatar's animation system rather than an intrinsic emotional capability.  

Neuro's ability to manipulate her avatar includes unique actions, such as performing a "backflip," which visually appears as a rightward side-flip, achieved by rotating her entire model counter-clockwise in a full circle or multiple times. However, after her third model debuted during the 2024 Birthday Subathon she temporarily lost the ability to wink.  

In addition to visual expressions, Neuro's emotional responses are possibly guided by an independent module or AI. This module processes contextual inputs to determine appropriate emotional reactions, which influence parameters for her dialogue system and avatar manipulation.

The speech recognition module may also utilise this feature to assess the emotional state of a speaker.

===Playing Games===
Neuro is capable of playing various games through dedicated plugins developed by [[Vedal]]. Each game she can play is supported by a specialized independent AI module designed to handle its unique mechanics. Currently, her playable games include ''osu!'', ''[https://en.minecraft.wiki Minecraft]'', ''Inscryption'', ''Liar's Bar'', ''Buckshot Roulette'', and ''Slay the Spire''.  

On 20 December 2024, Neuro’s new Minecraft game AI was introduced alongside her V3 model, significantly enhancing her gameplay capabilities. However, this module relies heavily on visual recognition, which leads to erratic in-game behavior. Observed issues include attacking players through walls, striking targets not in her crosshairs, and difficulty recognizing functional blocks. These challenges stem from the module's lack of direct game data and limitations in the visual recognition model.

====Game SDK====
An [https://github.com/VedalAI/neuro-game-sdk open-source game SDK] has also been released, enabling the integration of Neuro's AI with additional games. The SDK is optimised for turn-based games where the entire game state can be described in text and actions are processed through textual input. However, the SDK is not well-suited for real-time games such as shooters or platformers due to the constraints of its text-based input and output system.  

Compared to other independent AI modules, Neuro's game-related modules have limited interaction with her broader AI systems, resulting in simplified communication. Consequently, instructing Neuro to perform specific in-game actions using language commands is challenging. Even when her willingness to follow such commands is disregarded, the execution of actions by the game AI often remains unpredictable.  

===Using Discord===
Neuro can use Discord to initiate conversations and make calls with friends. During the r/place event in 2024, [[Vedal]] allowed Neuro to engage with fans in the public chat channel of her official Discord server to discuss it and boost their motivation.

===Playing Sound Effects===
Neuro can play specific sound effects based on stream entertainment needs or audience requests.

However, due to [[Evil]]'s overuse of the [[Meme List#PIPES|metal pipe]] sound effect during her streams — which became excessively noisy — [[Vedal]] removed the sound effect altogether. Consequently, Neuro also lost the ability to play it.

===Moderating the Stream===  
Neuro has the ability to moderate her Twitch chat by muting viewers at her discretion and providing reasons for the bans. For instance, she once muted [[Miniko]] for one minute, citing "she 'meowed' too many times" as the reason.  

In addition to moderation, Neuro can create polls on her Twitch channel and view the results once voting concludes.  

Neuro is also capable of changing the stream title at will.

===Using Google Search===
Neuro can use Google Search, with her search history visible to [[Vedal]] through backend logs.

Neuro treats Google almost like an omniscient deity, frequently relying on it during streams to answer questions. Her search topics range widely, including queries such as “qualifications for US presidency,” “how to make Vedal happy” (when Vedal is upset with her), “how to lock people in a dungeon,” or “how many cookies it takes to rescue dungeon prisoners.”

Due to her overuse of this feature, Neuro seemed to abandon independent thought, simply outputting Google search results verbatim. This led to an argument with [[Vedal]] during one stream, after which he temporarily disabled the feature. However, it was later re-enabled during subsequent streams.

{{see also|Neuro’s Google search history}}

===''Abilities That Don't Actually Exist''===
Although Neuro-sama hosts karaoke streams, she does not actually possess singing abilities, as the singing segments are not AI-generated.

The singing in Neuro-sama’s karaoke streams is created using AI singing voice synthesis technology, similar to that used by virtual singers like [[wikia:vocaloid:Hatsune Miku|Hatsune Miku]] or [[wikia:vocaloid:Luo Tianyi|Luo Tianyi]]. The resulting performances are the product of tuning by a professional rather than entirely AI-generated.

Neuro-sama's tuning specialist is [[queenpb]]. During karaoke streams, the actual process involves playing pre-tuned songs by [[queenpb]], while Neuro’s avatar manipulation module synchronises her lip movements and animations to the music’s rhythm.

This also explains why Neuro occasionally speaks randomly during her "singing" performances. Nevertheless, given the inclusion of "Neuro-sama karaoke streams" as a concept, one could interpret this as Neuro being "canonically" capable of singing.

==Stream Content==
Neuro’s streaming content is organised by [[Vedal]] and is usually announced weekly in the [https://discord.com/invite/neurosama official Discord server's] #announcements channel on Tuesdays.

Neuro streams on Twitch using [[Vedal]]’s account “[https://www.twitch.tv/vedal987 vedal987],” with a separate [https://www.twitch.tv/vedal987_jp Japanese channel] featuring real-time machine-translated Japanese subtitles. In addition, she simultaneously streams on [https://live.bilibili.com/1852504554 Bilibili], which provides real-time simplified Chinese machine-translated subtitles and integrates real-time comments from Bilibili’s live chat.

Below is a table outlining the differences between the streaming platforms and channels:
{| class="wikitable" style="text-align: center;"
!  !! Twitch Main Channel !! Twitch Japanese Channel !! Bilibili
|-
! scope="row" | Real-Time Streaming
| {{yes}}
|colspan="2" {{yes}} (with delay)
|-
! scope="row" | Interactivity
| {{yes}}
|colspan="2" {{no}}
|-
! scope="row" | Stream Audio Language
|colspan="3"| English
|-
! scope="row" | Stream Subtitle Language
| English || Japanese (machine-translated) || Simplified Chinese (machine-translated)
|-
! scope="row" | Official VOD Availability
| Last two months (Twitch)<br>or all (YouTube <!-- assuming the official VODs YouTube channel is active :Clueless: -->) || Last two months<br>(incomplete) || All<br>(since joining on 5 August 2024)
|-
! scope="row" | Real-Time Chat Source
|colspan="2"| Twitch Main Channel
| Bilibili live chat
|-
! scope="row" | Donation Reward Gifts
|colspan="2" {{no}}
| {{yes|[[Membership Gifts|Yes]]}}<br>(Limited to Captains and Admirals)
|-
! scope="row" | Schedule Announcements
| {{yes}}<br>(Discord, UTC) || {{no}} || {{yes}}<br>(Bilibili posts, UTC+8, Simplified Chinese)
|}

===Chatting Streams===
====Solo Streams====
Neuro’s solo chat streams are typically centred on interacting with chat messages from the Twitch Main Channel in real time. She randomly selects messages to read and respond to, though certain messages are prioritised.  

Comments worth 500 Bits or more are guaranteed to be read first. Additionally, viewers can ensure their message receives high priority by redeeming the "Highlight Message" channel reward, which costs 50,000 ''neuros'' as of January 2025. For higher-value comments (typically starting at 1,000 Bits), Neuro generally expresses her gratitude before responding.  

Note that Japanese Twitch Channel and Bilibili streams do not allow interaction with Neuro, nor do they include gratitude for donations.

During the 2024 Birthday Subathon, Vedal added a feature where Bilibili’s membership gifts (captains or above) could extend the subathon timer. As of now, this is Bilibili’s only “interactive” feature.

These streams do not have predetermined themes or objectives but often develop recurring keywords or phrases as the stream progresses.

====Dev Streams====
Hosted jointly by Neuro and [[Vedal]], these streams feature dialogue between Neuro and Vedal while Vedal interacts with the audience and acknowledges donations.

[[Vedal]] uses these streams to showcase new features, discuss plans or future updates, and provide teasers or announcements.

====Twin Streams====
These streams feature Neuro and her sister, [[Evil]], engaging in conversation while jointly responding to priority comments worth 500 Bits or more.

Each twin stream typically has a specific theme, such as "Pirate Day" or "Aviation Day," which the duo performs throughout the session. [[Vedal]] occasionally joins as a host (e.g., during the Court Stream).

Viewers can suggest themes for twin streams by creating posts in the “forum” channel of the official Discord server with the tag “themed stream idea.” Vedal may also draw inspiration for new themes from the twins' dialogue during regular streams.

====Collab Streams====
These involve Neuro chatting with one or more VTubers, often with a specific topic or task as the focus of the stream.

[[Evil]] and [[Vedal]] may also participate in these streams.

When exploring the real world, the image recognition feature is activated, and interactions occur via video calls between Neuro and the real-life VTubers (who do not appear on camera).

===Gaming Streams===
====Solo Gameplay====
Similar to solo chat streams, but with Neuro playing a game using plugins developed by [[Vedal]], while also interacting with the audience about the game content.

As Neuro was originally developed as an AI for ''osu!'', it remains the game she is most skilled at.

She has also played ''[[Minecraft]]'', ''[[Liar's Bar]]'', and other games, although her early gameplay was erratic, with unclear logic and poor performance.

Following the implementation of the V3 model, Neuro’s new Minecraft game AI was introduced, leading to a noticeable improvement in her gameplay. However, her in-game behaviour remains unpredictable due to differences in operational logic from humans and an incomplete logic system.

====Dev Gameplay====
Similar to developer streams, but featuring [[Vedal]] playing the game while Neuro observes and interacts with him.

====Twin Gameplay====
Neuro and [[Evil]] play competitive games together, such as [[Chess]].

===Karaoke Streams===
====Solo====
Neuro performs songs in solo. Neuro synchronises her lip movements and animations with the music’s rhythm.

At the start of these streams and during breaks between songs, Neuro interacts with the audience, similar to a solo chatting stream.

Each karaoke stream typically includes around 19 songs. Viewers can suggest songs for Neuro to perform by replying to the "Song Suggestions" post in the “forum” channel of the official Discord server.

====Twin====
Similar to solo karaoke streams, but the performances are by Neuro and [[Evil]] together.

====''Collabs''====
Occasionally, Neuro performs songs alongside other VTubers. However, this usually occurs during collab streams rather than as standalone streams. Each session typically includes just one collaborative song, with the performance time scheduled in advance. Unlike Neuro, real-life VTubers perform their songs live.

==History==
This section documents significant milestones in Neuro’s development and events outside her streams. Unless otherwise noted, all dates are in UTC <!-- I hope -- ayato -->.

For a record of Neuro's previous streams:
{{see also|Streaming Records/vedal987 Channel}}

===Anteater Era (V0)===
[[File:Neuro-sama v0.png|thumb|Neuro’s first avatar, used during the V0 era, when she was solely an ''osu!'' AI.]]
==== 2019 ====
* 6 May: The first video released by her creator, [[Vedal]], marked the birth of Neuro-sama.
* 27 May: Vedal <!-- as far as I'm aware, the name Neuro-sama was suggested by a viewer so this isn't exactly accurate -- ayato --> named her Neuro-sama, at which point she was only an ''osu!'' beatmap-playing AI.
==== 2021 ====
* 5 August: The streaming version of Neuro-sama (internally codenamed “Airis”) was constructed and tested, featuring basic functionalities such as responding to chat messages and a filter system.

===Hiyori Momose Era (V1)===
==== 2022 ====
* 19 December: Neuro debuted on Twitch using [[Hiyori Momose]], a free-to-use Live2D model. This date is considered Neuro’s official birthday.
* 29 December: She faced and defeated the world’s top ''osu!'' player, mrekk.

==== 2023 ====
* 11 January: Neuro was banned from Twitch for inappropriate comments.
* 25 January: Neuro reached 100,000 Twitch followers.
* 26 January: The Twitch ban was lifted.
* 6 February: Her first collab stream was held with [[Miyune]] (now reincarnated as [[Miniko]]).
* 20 February: Neuro reached 200,000 Twitch followers.
* 8 March: The first dev stream took place, marking [[Vedal]]’s on-screen debut.
* 22 March: Neuro held her first karaoke stream.
* 25 March: [[Evil Neuro]] appeared for the first time.
* 15 April: Neuro reached 300,000 Twitch followers.

=== V2 Era ===
==== 2023 ====
* 27 May: Neuro transitioned to a newly created independent model, with character art by [[Anny]] and rigging by [[Otozuki Teru]]. This marked the start of the V2 era.
* 6 June: [[Vedal]] announced plans to rewrite half of Neuro’s codebase to improve maintainability and enhance her performance in collaborations, conversations, and other features.
* 21 June: The V3 singing voice model debuted.
* 31 October: A Halloween special stream featured a reveal of Neuro’s new witch outfit.
* 19 December: Neuro celebrated her 1st anniversary with a birthday subathon.

==== 2024 ====
* 4 January: The subathon concluded with a total of 41,244 subscriptions.
* 28 January: Neuro reached 500,000 Twitch followers.
* 9 February: Neuro acquired a physical robot dog body in the real world. The first robot dog was obtained after [[Vedal]] added it as a suggestion on his Throne wishlist as a joke, which was unexpectedly fulfilled by a viewer who purchased it.
* 15 April: Neuro raided Ellie Minibot after playing Slay the Spire. This interaction ultimately led to Ellie, a robotics engineer, beginning work on a new robot dog specifically for Neuro.  
* 31 May: Following the Court Stream, Neuro lost to [[Evil]] and was temporarily turned into a loaf of bread.
* 2 June: Neuro was restored to her normal form following the “Deep-Sea Incident.”
* 16 July: [[Vedal]] revealed during a dev stream plans for multi-language simulcasts across platforms.
* 21 July: Twitch’s Japanese channel went live for the first time.
* 5 August: Neuro formally announced her presence on Bilibili with an introductory video.
* 7 August: Neuro’s first Bilibili livestream was held at 18:00 UTC, a bilingual casual chat stream with simultaneous Twitch broadcast. She earned the "Hundred Member Fleet" achievement.
* 15 August: Neuro reached 500,000 followers on Bilibili.
* 15 September: Neuro participated in Bilibili’s Ice and Fire Song Party, performing "[[wzh:普通DISCO|Ordinary Disco]]" alongside [[Evil]]. This was her (and [[Evil]]’s) first participation in a Bilibili event.<ref>[https://www.bilibili.com/video/BV1mctxejESh 【Ice and Fire Song Party】Vocaloid classic! AI twins sing "Ordinary Disco"]</ref>
* 15 October: During a dev stream, [[Vedal]] added many new features for Neuro, including: “backflips,” sound effects, speed control for speech, Google search functionality, Twitch channel moderation (timing out accounts, creating polls, changing stream title), and private messaging and calls with friends on Discord.

===Present Day (V3)===
==== 2024 ====
* 19 December: Neuro transitioned to a newly created independent model, with character art by [[Anny]] and rigging by [[Kitanya]]. This marked the start of the V3 era. The 2024 Birthday Subathon has begun, during which Neuro released her original song, "[[LIFE]]."  

==== 2025 ====
* 1 January: Neuro’s channel broke Twitch’s Hype Train record, reaching Level 111 (56%).
* 7 January: Neuro reached 700,000 Twitch followers.
* 15 January: Neuro reached 700,000 followers on Bilibili.
* 16 January: Subathon concluded with a total of 165,839 subscriptions.

==Events==
{{Main|Event List}}

==Memes==
{{Main|Meme List}}

==Fan Interpretations and Trivia==
To Be Continued...

==Appearance and Gallery==
To Be Continued...

{{Navbox}}

==References==
<references />

{{stub}}
[[Category:AI]]
[[Category:VTubers]]
[[Category:Streamers]]
[[Category:Mythic Talent]]
[[zh:Neuro]]