General chat clients

Big-AGI

Open-source web AI workbench for power users.

Big-AGI's OpenAI vendor accepts a custom API endpoint. Drop FreeTheAi in and Big-AGI auto-fetches /v1/models.

Base URL https://api.freetheai.xyz/v1
Recommended models bbg/zai-org/GLM-5.1
Chat completions Streaming Tool calling
Get a free key GitHub repo Visit Big-AGI
Step by step

Connect Big-AGI to FreeTheAi.

  1. 1

    Open Models

    Click `Models` and `Add a model source`. Pick `OpenAI`.

  2. 2

    Fill the source

    Use these values.

    text 
    API Key: PASTE_YOUR_FREETHEAI_KEY
API Endpoint: https://api.freetheai.xyz/v1
  3. 3

    Refresh models

    Click the `Models` button to refresh the list. Big-AGI calls /v1/models and pulls in the FreeTheAi catalog.

Recommended aliases

Models that pair well with Big-AGI.

  • bbg/zai-org/GLM-5.1
  • rev/claude-sonnet-4.5
  • bbg/deepseek-ai/DeepSeek-V4-Pro

See the full live catalog at /models. Aliases are stable; pricing on the free tier stays $0.

Heads up

Common gotchas.

  • Leave Helicone Key blank. Adding it forces the host to a different domain.
  • Disable the `Moderation` toggle. FreeTheAi does not expose a moderation endpoint.
Where to next

Keep building.

All setup guides Quickstart Cross-compatibility docs Model catalog Ask in Discord