DeepSeek posted on November 13 that the full DeepSeek App experience is now available through its API. The lead post lists search, files, links, safety and voice, and says developers can enable built in features with a few parameters or call standalone APIs such as OCR, ASR and TTS, including to recreate the full App in their own application. The post also links to an open source frontend demo that can import DeepSeek conversation history, to the demo's GitHub repo, and to DeepSeek's Build a Chatbot guide.
In a follow up post, DeepSeek said V4.1 Flash, the model listed as deepseek-flash, now supports these capabilities across the Messages, Responses and Chat Completions APIs, with tool calls and context assembly handled on the server. The post lists web search (web or images, with citations, when thinking is off), deep thinking search (search and read pages through multi step reasoning), file input (PDFs, Office files, images and more), URL reading (fetching links in user messages) and safety checks that screen inputs and outputs and return refusal indicators when risks are found. DeepSeek said public facing apps must enable safety checks, and that developers remain responsible for content moderation, applicable model registration and AI generated content labeling. Search, Fetch, OCR, ASR and TTS are also offered as standalone APIs.
A third post in the thread said extended capabilities incur tool usage fees on top of standard token charges. The pricing image DeepSeek shared lists Search and Fetch at $0.75 per 1,000 requests, OCR at $0.225 per 1,000 pages, ASR at $0.058 per hour (marked 50% off for a limited time, down from $0.116 per hour) and TTS at $0.225 per 10,000 characters (also marked 50% off for a limited time, down from $0.45 per 10,000 characters).
DeepSeek's API docs describe the same feature set and say the service runs the searches and URL reading, while the client shows the returned blocks and passes them back unchanged. The docs also say the open source demo stores the API key, conversations and uploaded images only in the browser.