DeepSeek launches V4-Pro-0813 with stronger agents but a 4x price hike

DeepSeek has officially launched DeepSeek-V4-Pro-0813, its updated flagship, across app, web, and API. The model significantly enhances AI agent and software-engineering capabilities and now natively supports the OpenAI Responses API format with Codex integration — a clear play for developers already building on OpenAI-compatible tooling. Researchers singled out its cybersecurity performance as a standout, per SCMP reporting, even as overall benchmark gains left many developers underwhelmed.

The headline for most users, though, is price. DeepSeek announced increases of 50% to 1,100% across the V4 family effective August 16, with V4-Pro output tokens climbing to $3.96 per million at peak hours from $0.87 previously. The company is introducing peak and off-peak billing to optimize resource allocation, with off-peak rates at roughly half the peak price. DeepSeek also shipped its Harness v0.1 agent framework in developer preview, open-sourced under MIT and powered by the Cordis meta-framework.

The community reaction was loud and negative. r/singularity's 'DeepSeek announce price increases of 50-1000%' hit 546 upvotes, and r/DeepSeek's 'Bye bye Deepseek' thread drew 484 upvotes and 229 comments as users vented over losing DeepSeek's signature cost advantage. A contrarian r/DeepSeek 'Hot take: the price increase is much less worse than it seems' (106 upvotes) argued off-peak billing softens the blow.

Competitively, the hike arrives the same week Grok 4.6, Gemini 3.7 Flash, and Qwen 3.8 all pushed price/performance harder — reviving debate over whether cheap Chinese models are losing their edge. Watch whether the cybersecurity gains and Codex compatibility retain enterprise developers despite the sticker shock.