# babbage-002

Calls to the model babbage-002 on OpenAI stopped working on September 28, 2026.

- API: OpenAI (api.openai.com)
- Model: babbage-002
- Kind: Model retirement
- Takes effect: September 28, 2026
- Calls after that day: fail
- Calls it hits: `model babbage-002`
- Source: [Deprecations page](https://developers.openai.com/api/docs/deprecations)
- Page: https://www.okapi.bot/models/openai/babbage-002/

## What to use instead

Move to gpt-5.6-terra, recommended by OpenAI.

gpt-5.6-terra is not served on /v1/completions. Move the call to Chat Completions (/v1/chat/completions) or the Responses API (/v1/responses): the prompt string becomes messages or input.