# qwen/qwen3-4b

Calls to the model qwen/qwen3-4b on Novita AI stopped working on May 22, 2026.

On May 22, 2026, Novita AI retired the model qwen/qwen3-4b. Requests sent to model qwen/qwen3-4b fail since that date. Novita AI listed the model as deprecated and no longer serves requests directed to it.

## What to use instead

Move to qwen/qwen3.5-27b or qwen/qwen3.6-27b, which Novita recommends as replacements.

- API: Novita AI (api.novita.ai)
- Model: qwen/qwen3-4b
- Kind: Model retirement
- Takes effect: May 22, 2026
- Calls after that day: fail
- Calls it hits: `model qwen/qwen3-4b`
- 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/qwen/qwen3-4b/

## Novita AI's words

> Deprecated model: qwen/qwen3-4b; Recommended alternatives: qwen/qwen3.5-27b, qwen/qwen3.6-27b

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