Overview
DeepSeek is an AI assistant and model platform designed for reasoning, coding, research, writing, and complex problem-solving. Its models support both thinking and non-thinking modes, allowing users to handle everyday conversations as well as more demanding tasks that require deeper reasoning. DeepSeek has also developed strong programming capabilities, including code generation, debugging, repository-level work, front-end development, and tool-assisted agent tasks.
Beyond general chat and reasoning, DeepSeek supports features such as web and information analysis, translation, rewriting, JSON output, function calling, and AI agent workflows. Recent DeepSeek models place increased emphasis on autonomous agent capabilities, with support for external tools and configurable thinking effort for balancing speed and reasoning depth. These capabilities make DeepSeek useful for developers, researchers, technical professionals, and users who need an AI assistant for both general knowledge work and complex technical tasks.
DeepSeek also provides an API for integrating its models into applications and automated workflows. The platform supports OpenAI-compatible and Anthropic-compatible interfaces, the Responses API, tool calling, context caching, and other developer-oriented features. With usage-based API pricing and models optimized for reasoning, coding, and agentic workloads, DeepSeek can serve both as a consumer AI assistant and as an AI model platform for developers building applications and agents.
Releases
2026
August
July
2026.07 DeepSeek V4 Flash · 2026-07-31
DeepSeek V4 Flash is now available in public beta through the API with stronger agent capabilities, native Responses API support, Codex integration, and improved benchmark performance.
Official release notesApril
2026.04 DeepSeek V4 · 2026-04-24
DeepSeek API adds V4 Pro and V4 Flash through both OpenAI ChatCompletions and Anthropic-compatible interfaces, while legacy deepseek-chat and deepseek-reasoner names begin a transition toward retirement.
Official release notes2025
December
2025.12 DeepSeek V3.2 · 2025-12-01
DeepSeek upgrades both deepseek-chat and deepseek-reasoner to V3.2, mapping them to non-thinking and thinking modes respectively, while also introducing the temporary V3.2-Speciale endpoint.
Official release notesSeptember
2025.09 DeepSeek V3.2 Exp · 2025-09-29
Both deepseek-chat and deepseek-reasoner are upgraded to DeepSeek V3.2 Exp, with the two API names corresponding to non-thinking and thinking modes.
Official release notes2025.09 DeepSeek V3.1 Terminus · 2025-09-22
DeepSeek upgrades chat and reasoning endpoints to V3.1 Terminus with reduced mixed-language output and improved Code Agent and Search Agent performance.
August
2025.08 DeepSeek V3.1 · 2025-08-21
DeepSeek V3.1 combines thinking and non-thinking modes in a single model, improves reasoning efficiency, and delivers major gains in tool use and agent-oriented tasks.
May
2025.05 DeepSeek R1 0528 · 2025-05-28
DeepSeek R1-0528 improves reasoning, coding, front-end generation, hallucination reduction, JSON output, and function calling compared with the previous R1 release.
March
2025.03 DeepSeek V3 0324 · 2025-03-24
DeepSeek V3-0324 brings stronger reasoning, coding, Chinese writing, translation, multi-turn rewriting, search, and function-calling performance to deepseek-chat.
January
2025.01 DeepSeek R1 · 2025-01-20
DeepSeek introduces the R1 reasoning model through the deepseek-reasoner API endpoint, providing a dedicated model for thinking-oriented tasks.
Official release notes2024
December
2024.12 DeepSeek V3 · 2024-12-26
The deepseek-chat endpoint is upgraded to DeepSeek V3 while keeping the existing API interface unchanged.
Official release notes2024.12 DeepSeek V2.5 1210 · 2024-12-10
DeepSeek V2.5-1210 improves mathematical and coding benchmark performance while also enhancing writing, reasoning, file upload, and webpage summarization experiences.
September
2024.09 DeepSeek V2.5 · 2024-09-05
DeepSeek V2 Chat and DeepSeek Coder V2 are merged into DeepSeek V2.5, combining stronger general instruction following with improved code generation capabilities.
August
2024.08 Context caching · 2024-08-02
DeepSeek API introduces context caching on disk to reduce repeated prompt processing costs and lower effective API pricing.
Official release notesJuly
2024.07 New API features · 2024-07-25
DeepSeek expands its API with JSON Mode, Function Calling, Chat Prefix Completion, larger max_tokens support, and Fill-in-the-Middle completion.
Official release notes2024.07 DeepSeek Coder V2 0724 · 2024-07-24
The deepseek-coder endpoint is upgraded to DeepSeek-Coder-V2-0724.
June
2024.06 DeepSeek V2 0628 · 2024-06-28
DeepSeek V2-0628 significantly improves coding, mathematics, general reasoning, and role-playing performance compared with the previous release.
2024.06 DeepSeek Coder V2 0614 · 2024-06-14
DeepSeek-Coder-V2-0614 delivers major gains in code generation, understanding, debugging, completion, mathematics, reasoning, and general capabilities.
May
2024.05 DeepSeek V2 0517 · 2024-05-17
DeepSeek V2-0517 improves instruction following, system prompt handling, translation, RAG workflows, and JSON-format output accuracy.
Complete your AI stack
Add specialist tools for research, coding, visual content, video, and automation.
Best alternatives
Compare similar tools in the same category.
