📰 DeepSeek V4预览版正式推出并开源！

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

🔹 DeepSeek-V4-Pro：总参数1.6万亿/激活参数490亿。性能与全球顶级闭源模型相媲美。

🔹 DeepSeek-V4-Flash：总参数2840亿/激活参数130亿。您的快速、高效且经济的选择。

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

📄 Tech Report: [https://huggingface.co/deepseek-ai/DeepSeek-V4-Pro/blob/main/DeepSeek_V4.pdf](https://huggingface.co/deepseek-ai/DeepSeek-V4-Pro/blob/main/DeepSeek_V4.pdf)

🤗 Open Weights: [https://huggingface.co/collections/deepseek-ai/deepseek-v4](https://huggingface.co/collections/deepseek-ai/deepseek-v4)

### DeepSeek-V4-Pro

🔹 增强的智能体能力：在智能体编码基准测试中达到开源SOTA水平。

🔹 丰富的世界知识：领先于所有当前开源模型，仅次于Gemini-3.1-Pro。

🔹 世界级推理能力：在数学/STEM/编程方面超越所有当前开源模型，与顶级闭源模型竞争。

### DeepSeek-V4-Flash

🔹 推理能力接近V4-Pro水平。

🔹 在简单的智能体任务中与V4-Pro表现相当。

🔹 Smaller parameter size, faster response times, and highly cost-effective API pricing.

### Structural Innovation & Ultra-High Context Efficiency

🔹 新型注意力机制：基于token的压缩+DSA（深度稀疏注意力）。

🔹 峰值效率：世界领先的长时间上下文处理，大幅降低计算和内存成本。

🔹 1M Standard: 1M context is now the default across all official DeepSeek services.

### 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.

### 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): [https://api-docs.deepseek.com/guides/thinking_mode](https://api-docs.deepseek.com/guides/thinking_mode)

⚠️ 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).

🔹 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.

原文链接：https://api-docs.deepseek.com/news/news260424

🕐 发布于: 2026年04月25日 18:03