# qwen/qwen3.5-35b-a3b-base

Calls to the model qwen/qwen3.5-35b-a3b-base on Together AI stopped working on September 11, 2026.

On September 11, 2026, Together AI retired model qwen/qwen3.5-35b-a3b-base. Calls targeting this model fail since that day. Requests are no longer served under the retired base identifier.

## What to use instead

Update requests to use Qwen/Qwen3.5-35B-A3B, which is the replacement recommended by Together AI.

- API: Together AI (api.together.xyz)
- Model: qwen/qwen3.5-35b-a3b-base
- Released: February 24, 2026 (models.dev)
- Kind: Model retirement
- Takes effect: September 11, 2026
- Calls after that day: fail
- Calls it hits: `model qwen/qwen3.5-35b-a3b-base`
- Source: [Deprecations page](https://docs.together.ai/docs/deprecations)
- Verified: November 6, 2026, against Together AI's own pages
- Page: https://www.okapi.bot/models/together-ai/qwen/qwen3.5-35b-a3b-base/

## Together AI's words

> Removal date: 2026-09-11; Model: Qwen/Qwen3.5-35B-A3B-Base; Suggested replacement: Qwen/Qwen3.5-35B-A3B

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