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Version: v5.1.0

Kokoro-FastAPI

Run Kokoro-FastAPI locally and connect it to OpenReader using the Custom OpenAI-Like provider.

warning

For Kokoro issues and support, use the upstream repository: remsky/Kokoro-FastAPI.

Run Kokoro​

Use the upstream images; their README is the source of truth for tags and options. These commands follow it at the time of writing.

CPU (any machine):

docker run --name kokoro-tts --restart unless-stopped -d \
  -p 8880:8880 \
  ghcr.io/remsky/kokoro-fastapi-cpu:latest

GPU (NVIDIA, needs the NVIDIA Container Toolkit):

docker run --name kokoro-tts --restart unless-stopped -d \
  --gpus all \
  -p 8880:8880 \
  ghcr.io/remsky/kokoro-fastapi-gpu:latest

gpu:latest ships CUDA 12.6 on amd64 and CUDA 12.9 on arm64 (Jetson, GH200). For Blackwell/RTX 50-series GPUs on amd64, use ghcr.io/remsky/kokoro-fastapi-gpu:latest-cu128 instead. Docker GPU images do not run on Apple Silicon; use the CPU image there.

Pin a release tag (for example v0.9.0) instead of latest if you want upgrades to be deliberate.

Check that it is running before connecting OpenReader:

curl http://localhost:8880/v1/audio/voices

Connect to OpenReader​

Recommended (auth + admin): Settings → Admin → Shared providers

  1. Add a shared provider with type custom-openai.
  2. Set the base URL for your deployment topology (Docker-to-host: http://host.docker.internal:8880/v1; native same-host: http://127.0.0.1:8880/v1).
  3. Leave API key blank unless required by your deployment.
  4. Set default model to Kokoro.

Bootstrap seed (optional, first boot only):

API_BASE=http://host.docker.internal:8880/v1
API_MODEL_NAME=kokoro

Use host.docker.internal only when OpenReader/its embedded worker run in Docker and Kokoro runs on that Docker host. In Compose, use the shared service URL http://kokoro-tts:8880/v1. A remote worker needs a public/private-network URL it can reach. See the provider topology table.

Users select the configured shared provider, model, and voice from Settings → TTS Provider.

References​