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🚀 DeepSeek-V4 Preview is officially live & open-sourced! Welcome to the era of cost-effective 1M context length. 🔹 DeepSeek-V4-Pro: 1.6T total / 49B active params. Performance rivaling the world's top closed-source models. 🔹 DeepSeek-V4-Flash: 284B total / 13B active params. Your fast, efficient, and economical choice. Try it now at <a target="_blank" href="http://chat.deepseek.com" color="blue">chat.deepseek.com</a> via Expert Mode / Instant Mode. API is updated & available today! 📄 Tech Report: <a target="_blank" href="https://huggingface.co/deepseek-ai/DeepSeek-V4-Pro/blob/main/DeepSeek_V4.pdf" color="blue">huggingface.co/deepseek-ai/De…</a> 🤗 Open Weights: <a target="_blank" href="https://huggingface.co/collections/deepseek-ai/deepseek-v4" color="blue">huggingface.co/collections/de…</a> 1/n
DeepSeek-V4-Pro 🔹 Enhanced Agentic Capabilities: Open-source SOTA in Agentic Coding benchmarks. 🔹 Rich World Knowledge: Leads all current open models, trailing only Gemini-3.1-Pro. 🔹 World-Class Reasoning: Beats all current open models in Math/STEM/Coding, rivaling top closed-source models. 2/n
DeepSeek-V4-Flash 🔹 Reasoning capabilities closely approach V4-Pro. 🔹 Performs on par with V4-Pro on simple Agent tasks. 🔹 Smaller parameter size, faster response times, and highly cost-effective API pricing. 3/n
Structural Innovation & Ultra-High Context Efficiency 🔹 Novel Attention: Token-wise compression + DSA (DeepSeek Sparse Attention). 🔹 Peak Efficiency: World-leading long context with drastically reduced compute & memory costs. 🔹 1M Standard: 1M context is now the default across all official DeepSeek services. 4/n
Dedicated Optimizations for Agent Capabilities 🔹 DeepSeek-V4 is seamlessly integrated with leading AI agents like Claude Code, OpenClaw & OpenCode. 🔹 Already driving our in-house agentic coding at DeepSeek. The figure below showcases a sample PDF generated by DeepSeek-V4-Pro. 5/n
API is Available Today! 🔹 Keep base_url, just update model to deepseek-v4-pro or deepseek-v4-flash. 🔹 Supports OpenAI ChatCompletions & Anthropic APIs. 🔹 Both models support 1M context & dual modes (Thinking / Non-Thinking): <a target="_blank" href="https://api-docs.deepseek.com/guides/thinking_mode" color="blue">api-docs.deepseek.com/guides/thinkin…</a> ⚠️ Note: deepseek-chat & deepseek-reasoner will be fully retired and inaccessible after Jul 24th, 2026, 15:59 (UTC Time). (Currently routing to deepseek-v4-flash non-thinking/thinking). 6/n
🔹 Amid recent attention, a quick reminder: please rely only on our official accounts for DeepSeek news. Statements from other channels do not reflect our views. 🔹 Thank you for your continued trust. We remain committed to longtermism, advancing steadily toward our ultimate goal of AGI. 7/n