TypingMind API: Add FreeTheAI as a Custom Model
TypingMind adds each FreeTheAI model as a custom model with the full chat completions endpoint and your key in an Authorization header.
Steps
Add a custom model
Open Models in the sidebar and choose Add Custom Model, then Create Manually.
Fill in the model
Enter a name, choose OpenAI Chat Completions API, and enter the endpoint URL and model ID. Set the context length (for example 128000).
Add your key
Choose API Key via HTTP header. Use Authorization as the key and Bearer followed by a space and your key as the value.
Test and save
Press Test, then Add Model. Repeat for each model you want.
How this guide was checked: Checked against TypingMind's custom model docs on 2026-09-29.
Troubleshooting
TypingMind says authentication failed. Why?
The header value must be "Bearer " (with a space) followed by your full key.
Common errors
- 401: the key is wrong or incomplete. Paste the whole key.
- 403: follow a provider of the model, or confirm your email.
- 404: the model ID or URL is wrong.
- 429: daily limit reached, or too many requests at once.