On November 13, 2026, DeepSeek extended several features from its consumer app to its API, including web and image search, deep-thinking mode, file parsing, URL reading, safety checks and voice functions. These capabilities are powered primarily by the new deepseek-flash model, identified as V4.1-Flash-1017 and available through the Messages, Responses and Chat Completions endpoints. The company also launched standalone APIs for search, page fetching, OCR, speech recognition and text-to-speech. Public-facing applications must incorporate the safety checks required by DeepSeek, which also released an open-source demonstration for developers to use as an implementation reference.
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