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HOPPOU AI.

Just some cool VRChat stuff we like to make. Voice APIs, browser tools, and Gabriel, an AI who'll actually hang out and talk to you in-world.

see projects api access

projects

07

tools

08

voice api

live

open source

mostly

Project Gabriel Gabriel Plugins ApexSVC The Bird Band Project Helion OctoBrowser Gabriel Framework
Project Gabriel Gabriel Plugins ApexSVC The Bird Band Project Helion OctoBrowser Gabriel Framework
Project Gabriel Gabriel Plugins ApexSVC The Bird Band Project Helion OctoBrowser Gabriel Framework
Project Gabriel Gabriel Plugins ApexSVC The Bird Band Project Helion OctoBrowser Gabriel Framework
Project Gabriel Gabriel Plugins ApexSVC The Bird Band Project Helion OctoBrowser Gabriel Framework
Project Gabriel Gabriel Plugins ApexSVC The Bird Band Project Helion OctoBrowser Gabriel Framework

01 / projects

Stuff we made

01 Project Gabriel (Remastered) real-time VRChat AI active 02 Gabriel Plugins drop-in modules for Gabriel active 03 ApexSVC zero-shot singing voice conversion active 04 The Bird Band 12-piece VRChat orchestra semi-retired 05 Project Helion fully local VRChat chatbot active 06 OctoBrowser weekend contest project done 07 Gabriel Framework (Original) where Gabriel started archived

02 / api

The voice API

The same voice stack our projects run on, opening up to the public. OpenAI-compatible endpoints, so most SDKs already work with it.

Text to Speech

live

Pocket TTS under the hood. Voice cloning, HTTP and WebSocket streaming, PCM/WAV/MP3/Opus out.

Speech to Text

in testing

Built on parakeet.cpp. Fast transcription on the same base URL, same keys. Public access soon.

# works with the OpenAI SDK

curl https://api.hoppou.ai/tts/v1/audio/speech \
  -H "Authorization: Bearer $HOPPOU_KEY" \
  -d '{
    "model": "pocket-tts",
    "voice": "your-cloned-voice",
    "input": "hello world"
  }' \
  --output speech.mp3
about the api → docs →

03 / tools

Free tools

Handy stuff for VRChat creators and whoever else. Browser tools run locally, your files never leave your device.

Sprite Sheets

stable

Turn GIFs, MP4s, WebMs, and MOVs into VRChat sprite sheets for animated emojis. Pick a grid, pick a format, download.

open →

Image Convert

stable

Convert images between PNG, JPEG, WebP, and ICO right in your browser. Quality slider included, nothing gets uploaded.

open →

Key Gen

stable

Generate random API keys and tokens with custom length, prefix, and character sets. Cryptographically random, runs locally.

open →

Byte Convert

stable

Convert between bytes, KB, MB, GB, TB, PB, and bits. Base 1024, instant, accurate.

open →

BG Remover

private

Remove image backgrounds with BiRefNet. Runs on our GPUs, outputs transparent PNGs. Discord sign-in required.

open →

RVC Covers

private

Make AI voice covers with RVC models. Upload a model, give it a song, get back a mixed cover plus separated stems.

open →

TTS

private

Type something, pick a voice, get clean speech back. Clone your own voice from a short sample, or use one of the built-in ones.

open →

STT

private

Drop in an audio file, get a transcript back. Plain text, JSON, or subtitles (SRT/VTT). Discord sign-in required.

open →