# DeepSeek V4.1 Flash 1017

DeepSeek V4.1 Flash 1017 is a model from DeepSeek, released on 17 Oct 2026.

- Developer: DeepSeek
- Id: deepseek-v4-1-flash-1017
- Reported: 2026-11-10T09:41:00.000Z
- Released: 2026-10-17T00:00:00.000Z
- Status: Released
- Canonical: https://alexgetman.com/models/deepseek/deepseek-v4-1-flash-1017-267/

## Questions

### When was DeepSeek V4.1 Flash 1017 released?

On 17 Oct 2026.

## Timeline

- 2026-11-15T12:05:07.628Z · [GitHub search · DeepSeek · pulls · stablyai/orca · @lop0921](https://github.com/stablyai/orca/pull/40724)
> with an AI coding agent (DeepSeek Harness, model `deepseek-v4-1-flash-1017`), including the reproduction, the patch, and the tests. A human reviewed the result before submission.
- 2026-11-15T12:05:07.628Z · [GitHub search · DeepSeek · pulls · teo-mateo/llm-dock · @teo-mateo](https://github.com/teo-mateo/llm-dock/pull/509)
> config.yaml stays secret-free). Used as `{"supports_reasoning": false}` on `deepseek-v4-1-flash-1017`, which rejects `reasoning_effort: "medium"`.

## Evidence links

- [review](https://api-docs.deepseek.com/updates/)
- [GitHub search · DeepSeek · pulls · stablyai/orca · @lop0921](https://github.com/stablyai/orca/pull/40724)
- [GitHub search · DeepSeek · pulls · teo-mateo/llm-dock · @teo-mateo](https://github.com/teo-mateo/llm-dock/pull/509)

## Signals