# deepseek/deepseek-v3.1-terminus

Calls to the model deepseek/deepseek-v3.1-terminus on Novita AI stopped working on September 29, 2026.

On September 29, 2026, the model deepseek/deepseek-v3.1-terminus reached its retirement date and stopped working. Requests targeting model deepseek/deepseek-v3.1-terminus fail since that day.

## What to use instead

Update requests to use deepseek/deepseek-v4.1-flash, which Novita recommends as the replacement model.

- API: Novita AI (api.novita.ai)
- Model: deepseek/deepseek-v3.1-terminus
- Released: June 1, 2025 (models.dev)
- Kind: Model retirement
- Takes effect: September 29, 2026
- Calls after that day: fail
- Calls it hits: `model deepseek/deepseek-v3.1-terminus`
- Source: [Model notices](https://novita.ai/docs/llms-full.txt#deprecation-notice)
- Verified: November 6, 2026, against Novita AI's own pages
- Page: https://www.okapi.bot/models/novita-ai/deepseek/deepseek-v3.1-terminus/

## Novita AI's words

> Model ID: deepseek/deepseek-v3.1-terminus; Retirement date: Sep 29, 2026; Replacement model: deepseek/deepseek-v4.1-flash

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent