DeepSeek V4 Preview Release

πŸš€ DeepSeek-V4 Preview is officially live & open-sourced! Welcome to the era of cost-effective 1M context length.

πŸ”Ή DeepSeek-V4-Pro: 1.6T total / 49B active params. Performance rivaling the world's top closed-source models.

πŸ”Ή DeepSeek-V4-Flash: 284B total / 13B active params. Your fastefficientand economical choice.

Try it now at chat.deepseek.com via Expert Mode / Instant Mode. API is updated & available today!

πŸ“„ Tech Report: https://huggingface.co/deepseek-ai/DeepSeek-V4-Pro/blob/main/DeepSeek_V4.pdf

πŸ€— Open Weights: https://huggingface.co/collections/deepseek-ai/deepseek-v4

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DeepSeek-V4-Pro​

πŸ”Ή Enhanced Agentic Capabilities: Open-source SOTA in Agentic Coding benchmarks.
πŸ”Ή Rich World Knowledge: Leads all current open modelstrailing only Gemini-3.1-Pro.
πŸ”Ή World-Class Reasoning: Beats all current open models in Math/STEM/Codingrivaling top closed-source models.

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DeepSeek-V4-Flash​

πŸ”Ή Reasoning capabilities closely approach V4-Pro.
πŸ”Ή Performs on par with V4-Pro on simple Agent tasks.
πŸ”Ή Smaller parameter sizefaster response timesand highly cost-effective API pricing.

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Structural Innovation & Ultra-High Context Efficiency​

πŸ”Ή Novel Attention: Token-wise compression + DSA (DeepSeek Sparse Attention).
πŸ”Ή Peak Efficiency: World-leading long context with drastically reduced compute & memory costs.
πŸ”Ή 1M Standard: 1M context is now the default across all official DeepSeek services.

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Dedicated Optimizations for Agent Capabilities​

πŸ”Ή DeepSeek-V4 is seamlessly integrated with leading AI agents like Claude CodeOpenClaw & OpenCode.
πŸ”Ή Already driving our in-house agentic coding at DeepSeek.

The figure below showcases a sample PDF generated by DeepSeek-V4-Pro.

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API is Available Today!​

πŸ”Ή Keep base_urljust update model to deepseek-v4-pro or deepseek-v4-flash.
πŸ”Ή Supports OpenAI ChatCompletions & Anthropic APIs.
πŸ”Ή Both models support 1M context & dual modes (Thinking / Non-Thinking): https://api-docs.deepseek.com/guides/thinking_mode

⚠️ Note: deepseek-chat & deepseek-reasoner will be fully retired and inaccessible after Jul 24th202615:59 (UTC Time). (Currently routing to deepseek-v4-flash non-thinking/thinking).

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πŸ”Ή Amid recent attentiona quick reminder: please rely only on our official accounts for DeepSeek news. Statements from other channels do not reflect our views.
πŸ”Ή Thank you for your continued trust. We remain committed to longtermismadvancing steadily toward our ultimate goal of AGI.