Jan

Jan: add a provider, API URL and model to the chat app.

Published instructions · App version: unverified

Chat, ping, invoke and content-generation examples may send real billable requests. Check the model, balance, rate and minimum before running them. GET /v1/models checks authentication and the catalogue only. Set up environment variables safely

Base URL to paste

OpenAI SDKs generally use a URL ending in /v1; Anthropic SDKs use the root URL. Avoid adding /v1 twice. Protocol compatibility does not guarantee every provider feature.

https://thapi.cloud/v1

Prerequisites

Install Jan
API keys

Recommended model: claude-fable-5

Quick way — command / config

Settings → Model Providers → Add Provider
  Type     : OpenAI Compatible
  Base URL : https://thapi.cloud/v1
  API Key  : sk-thapi-...
  Model ID : claude-fable-5

Where to place file / fill Settings

Interfacemacos

Settings → Model Providers

Add a remote provider; do not select only a local model.

Interfacewindows

Settings → Model Providers

Same as macOS.

Verify connection

Select a ThAPI model and chat

Troubleshooting

Symptom	Reason	How to handle
Connection refused	The Base URL is missing https or /v1.	Đúng https://thapi.cloud/v1.

Msty · SillyTavern