Models
August 14, 2026

DeepSeek launches V4 Pro with major agent and reasoning upgrades

DeepSeek has launched V4 Pro with improved agent capabilities, flexible reasoning levels, native OpenAI Responses API support, Codex optimization, and availability across its web, app, and API platforms.

DeepSeek has released V4 Pro, its latest production model featuring major upgrades for AI agents and complex reasoning workloads.

The model supports adjustable reasoning effort, allowing developers to select low reasoning for simple tasks, high reasoning for everyday agent workflows, or maximum reasoning for complex problems.

DeepSeek has also added native OpenAI Responses API compatibility and optimized the model for Codex with simplified setup. V4 Pro is available through DeepSeek’s app and website using Expert Mode, as well as through its API. DeepSeek also introduced peak and off-peak API pricing, with off-peak rates discounted by 50%.

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