DeepSeek V4-Pro open-weight release
- DeepSeek launched V4-Pro-0813 on August 13 across API, app, and web with three thinking tiers, OpenAI Responses API support, and Codex integration, publishing open weights under an MIT license on Hugging Face and raising peak-hour output token prices to $3.96 per million from a prior flat rate of $0.87.
- Third-party benchmark comparisons placed it at 1607 on Code Arena WebDev AutoEval, second among open models on scores from a reward model rather than live human votes, with Kimi K3 costing $18 against DeepSeek's $1.305 for the same token volume.
DeepSeek V4-Pro is an open-weight model scoring near proprietary frontier models on several coding and agentic benchmarks at substantially lower API cost. The weights carry an MIT license, making the model self-hostable.