# DeepSeek releases DeepSeek-V4.1-Flash-1017 and opens Search APIs

The model is live on DeepSeek's site, app, API, Hugging Face, and ModelScope, alongside public Search and Fetch APIs priced at $0.75 per 1,000 calls.

- DeepSeek-V4.1-Flash-1017 uses reinforcement learning with self-feedback targeted at project development like game creation and 3D modeling.
- Search and Fetch API calls via server-side tools in DeepSeek Harness, Claude Code, and Codex are free for API users until October 31, 2026.
- The model is optimized for DeepSeek Harness v0.2.1-rc.1 or later, Tencent CodeBuddy, and WorkBuddy.

## Why it matters

Developers get an updated open-weights Flash model with faster outputs and direct access to DeepSeek's search engine endpoints.

## Sources

- [DeepSeek: DeepSeek releases DeepSeek-V4.1-Flash-1017 and opens Search APIs](https://x.com/deepseek_ai/status/2111375640717033777)

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Summarized by dstilled on 2026-10-17. https://dstilled.ai/story/b164b334-08a0-4466-8c45-a11c61698448