DeepSeek has announced the provision of a complete set of APIs for its application, allowing developers to integrate core DeepSeek App functionalities into their own products. The update was presented in the company's API changelog on November 13th.
Developers can activate functionality by using parameters in existing APIs, while DeepSeek servers handle the processing of tool calls and context gathering.
Model and API Capabilities
According to the changelog, the deepseek-flash model, currently used in DeepSeek-V4.1-Flash-1017, supports five functions in API Messages, Responses, and Chat Completions. Additionally, basic capabilities are available as separate APIs: Search and Fetch, OCR, ASR for speech recognition, and TTS for speech synthesis.
To demonstrate these capabilities, DeepSeek has opened the source code for a chat demo, a static web client that connects directly to the API from the browser. This client supports deep thinking, search, link reading, attachment uploads, and voice input, and can also import the user's DeepSeek chat history.
Tariffs and Pricing
Tool usage is charged on top of token costs. DeepSeek's pricing page lists the following rates: search (for text or images) and web data fetching cost $0.75 per 1000 requests, or 5 yuan on the Chinese site. File parsing and OCR cost $0.225 per 1000 pages. Speech synthesis (Text-to-speech) is priced at $0.45 per 10,000 characters, and speech recognition at $0.116 per hour of audio; both services are currently offered with a double discount.
Fees for search and data fetching apply regardless of whether developers call these APIs directly or if the model uses them through its tools. These new APIs expand upon the Search and Fetch APIs opened on October 17th, which operate on DeepSeek's internal search engine. Token prices for deepseek-flash remain unchanged: $0.30 per million input tokens when cache misses and $1.20 per million output tokens during peak hours, with rates halved outside of peak hours.



