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Home/Tech/DeepSeek opens app tools on the API for V4.1-Flash
VERIFIEDBy Xavier Rivera·Friday, November 13, 2026 at 10:08 PM AST·1.5 min read

DeepSeek opens app tools on the API for V4.1-Flash

DeepSeek has opened web search, file input, URL reading, and safety checks on the deepseek-flash API. Search, Fetch, OCR, speech recognition, and text-to-speech are also available as standalone calls.

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DeepSeek opens app tools on the API for V4.1-Flash
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TL;DRAI · 60 sec read

DeepSeek has opened the app's search, file, link, and safety tools on the deepseek-flash API as of November 13. The tools work in the Messages, Responses, and Chat Completions APIs, with tool calls assembled on DeepSeek's servers. Public-facing apps must turn on the safety check. Search, Fetch, OCR, speech recognition, and text-to-speech are also standalone APIs. The change log points to a pricing page and does not print the tool fees.

DeepSeek has opened the tools behind its app to API developers. The change log dated November 13 says web search, file input, URL reading, voice, and safety checks now run on the deepseek-flash model.
Messages, Responses, and Chat Completions can take the new parameters.
The tools sit inside the existing chat APIs. Messages, Responses, and Chat Completions can take the new parameters. DeepSeek's servers make the tool calls and assemble the results into the model's context. Developers do not have to wire that loop themselves for the built-in path.

deepseek_ai@deepseek_ai

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Search has two modes. With thinking off and the deepseek_web_search tool on, the model searches the web or images and answers with citations. With thinking on and the same tool enabled, it searches and reads pages across multiple reasoning steps. URL reading is a separate switch, deepseek_read_url, which fetches links that appear in the user message.
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Files and a safety check are part of the same release. PDFs, Office files, and images can be uploaded, extracted to text or a richer layout, and added to the conversation. A safety parameter reviews the model input and output and returns a refusal marker when a risk is found. Public-facing apps must enable that check. DeepSeek says developers still handle content review, model registration, and AI labeling.
Public-facing apps must enable that check.

The same functions are also standalone APIs. Search, Fetch, OCR, speech recognition, and text-to-speech can be called on their own. DeepSeek has open-sourced a demo chat client that can import DeepSeek conversation history. The change log points to a pricing page for the extra tool fees and does not print those prices in the release note.
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