# DeepSeek launches V4-Pro with agent upgrades and API support

DeepSeek-V4-Pro is now available on app/web and via API, with new peak/off-peak pricing effective Aug 16, 2026.

- V4-Pro and V4-Flash offer low, high, and max reasoning effort levels.
- Native OpenAI Responses API support, optimized for Codex with one-click setup.
- V4 Pro is available via 'Expert Mode' on app/web.
- Off-peak API rates are 50% lower than peak rates.

## Why it matters

Developers and enterprises using DeepSeek models can now access a more capable agent-focused model with flexible reasoning and cost-saving off-peak pricing.

## Sources

- [DeepSeek: DeepSeek launches V4-Pro with agent upgrades and API support](https://x.com/deepseek_ai/status/2087864585504305397)

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Summarized by dstilled on 2026-08-13. https://dstilled.ai/story/76bc92d4-da20-460a-901b-2bc44f1abd53