According to @deepseek_ai, the DeepSeek API now supports the new deepseek-v4-pro and deepseek-v4-flash models with 1M context windows and dual Thinking and Non-Thinking modes, while maintaining the same base_url for quick migration. As reported by DeepSeek on X, the API is compatible with OpenAI ChatCompletions and Anthropic-style endpoints, enabling drop-in integration for existing toolchains and faster time to production. According to DeepSeek, deepseek-chat and deepseek-reasoner will be fully retired and inaccessible after July 24, 2026, 15:59 UTC, and are currently routed to deepseek-v4-flash in both modes, signaling an urgent deprecation timeline for enterprises to update model names in configuration. For AI builders, the 1M context plus dual modes unlock long-context retrieval, multi-document analysis, and chain-of-thought optionality with governance control, while API parity with leading ecosystems reduces vendor lock-in and integration overhead, as stated by DeepSeek’s official announcement.