The 2026-10-17 update to DeepSeek V4.1 Flash. DeepSeek reports substantial gains across reasoning, coding, agentic, and vision benchmarks, along with shorter task times and outputs; this version has its own Hugging Face checkpoint under the MIT license.
The official web and app now use 1017; API calling method and price are unchanged, and the model name remains `deepseek-flash`. DeepSeek also confirms legacy names `deepseek-v4-flash` and `deepseek-v4-flash-vision-exp` route to this version.
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— DeepSeek updated its web, app, and API model to V4.1-Flash-1017 while keeping the stable API name `deepseek-flash` and pricing unchanged. This dated version has a separate model repository with MIT-licensed weights. DeepSeek reports improved benchmark performance, faster task completion, and shorter outputs. ↗
It gives a date-stamped identity to the model behind a stable API ID and publishes a separate weight snapshot, making the relationship between the served version and deployable checkpoint traceable.
DeepSeek updated its web, app, and API model to V4.1-Flash-1017 while keeping the stable API name `deepseek-flash` and pricing unchanged. This dated version has a separate model repository with MIT-licensed weights. DeepSeek reports improved benchmark performance, faster task completion, and shorter outputs.
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