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DeepSeek Releases Cheaper, Faster Open-Weight Coding Model V4.1-Flash-1017

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DeepSeek released DeepSeek-V4.1-Flash-1017 on October 17, 2026, a minor update to its V4.1-Flash model aimed at agentic coding work. According to vendor-reported benchmarks, the model posts higher scores than its predecessor, completes tasks faster, and produces shorter outputs, while offering a 1M-token context window and MIT-licensed open weights. It leads several agentic coding benchmarks but trails frontier models like Claude Opus 5 on harder reasoning tests, and no independent evaluation exists yet. DeepSeek's API pricing is substantially lower than closed frontier models, with cache hits costing far less than cache misses and off-peak rates at half the peak level. The company also opened its Search & Fetch APIs to all users at $0.75 per 1,000 successful calls.

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