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OpenRouter adds DeepSeek V4.1 Flash 1017 model

OpenRouter now offers DeepSeek V4.1 Flash 1017, a sparse mixture‑of‑experts model with a 1‑million token context window.

NoteBy Published by Oossa: 1 min read

OpenRouter has added a new model called DeepSeek V4.1 Flash 1017. It is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, provided under the `deepseek-flash` API name. The model uses a sparse mixture‑of‑experts architecture and can handle up to 1,048,576 tokens of context in a single request.

Why it matters

Developers can now build longer‑form AI applications, such as document analysis or extended chat sessions, without breaking the text into pieces.

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