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DeepSeek-V4-Flash-0731 agentic and coding upgrades

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DeepSeek released DeepSeek-V4-Flash-0731 on July 31, 2026, with improvements to agentic and coding capabilities achieved through re-post-training rather than architectural changes. The model is now available on Hugging Face and the official V4-Flash API moved to public beta.

  • Released July 31, 2026 on Hugging Face with official V4-Flash API in public beta
  • Architecture and model size unchanged; gains from re-post-training only
  • Improved agentic and coding performance over previous version
  • High reasoning mode via OpenRouter produces notably better outputs than default mode
  • Supersedes previous preview release as official version