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Foundation Models🔴Developer
D

DeepSeek

Chinese frontier AI lab shipping open-weight reasoning and coding models — DeepSeek-V3, DeepSeek-R1, and DeepSeek-Coder — at order-of-magnitude lower API prices than US frontier labs.

Starting at$0 (permissive license)
Visit DeepSeek →
💡

In Plain English

Chinese frontier AI lab shipping open-weight reasoning and coding models — DeepSeek-V3, DeepSeek-R1, and DeepSeek-Coder — at order-of-magnitude lower API prices than US frontier labs.

OverviewFeaturesPricingGetting StartedUse CasesIntegrationsLimitationsFAQSecurityAlternatives

Overview

DeepSeek is a Hangzhou-based AI lab that has become a global force by releasing open-weight frontier-class models at very low API prices. The DeepSeek-V3 series is a 671B-parameter mixture-of-experts model (with 37B active parameters per token) that competes with closed US frontier models on broad benchmarks; DeepSeek-R1 is its reasoning-trained sibling that explicitly thinks through problems before answering and was widely reproduced and distilled across the open-model ecosystem. DeepSeek-Coder and DeepSeek-Coder-V2 are code-specialized models in the same lineage. Critically, DeepSeek publishes model weights under permissive licenses and offers them on its own API at a tiny fraction of the price of OpenAI / Anthropic equivalents — input pricing is widely an order of magnitude lower and includes context-cache discounts that further reduce cost on long, repeated prompts. The DeepSeek API is OpenAI-compatible, supports function calling and JSON output, and is widely used as a drop-in cheap reasoning brain inside agent stacks. Builders typically self-host the open weights for sensitive workloads (the models run on Together, Fireworks, Groq, Hyperbolic, and home GPUs) and hit the official API for prototyping or non-sensitive production traffic.

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Editorial Review

DeepSeek offers powerful AI capabilities at breakthrough pricing, making enterprise-grade AI accessible to budget-conscious teams. The combination of strong benchmark performance on math and coding tasks, transparent open-weight releases under the MIT license, and optional self-hosting makes it a compelling alternative to expensive Western models. DeepSeek-R1's chain-of-thought reasoning rivals OpenAI's o1 at a fraction of the cost, and the OpenAI-compatible API simplifies migration for existing users. However, the China-based data processing creates real compliance barriers for regulated industries, and the platform has experienced notable reliability issues during demand surges. Teams that can self-host the open weights or tolerate the data residency constraints will find exceptional value, while those requiring Western data residency and enterprise compliance certifications should look elsewhere.

Key Features

DeepSeek-R1 Reasoning Model+

A 671B-parameter Mixture-of-Experts reasoning model released January 2025 under MIT license that produces explicit chain-of-thought before answering. It matches OpenAI o1 on MATH-500 (97.3% vs 96.4%) and Codeforces benchmarks while being open-weight and 27x cheaper on the hosted API.

DeepSeek-V3 General-Purpose Model+

A 671B MoE model with 37B active parameters trained on 14.8 trillion tokens, optimized for fast low-cost chat, coding, and Q&A. It achieves GPT-4o-class performance at $0.27 per million input tokens and $1.10 per million output tokens, one of the cheapest frontier models on the market.

Open-Weight MIT License Release+

Both V3 and R1 model weights are published on Hugging Face under the permissive MIT license, allowing unrestricted commercial use, fine-tuning, and redistribution. This enables true self-hosting for data-sensitive workloads, a capability competitors like OpenAI and Anthropic do not offer.

OpenAI-Compatible API+

The DeepSeek API implements the same endpoints and request/response schemas as OpenAI's, so existing applications can migrate by changing just the base URL and API key. This dramatically lowers switching costs for teams already using the OpenAI SDK in Python, Node, or other languages.

Context Caching & Long Context+

DeepSeek supports 128K-token context windows and automatic prompt caching that reduces input token pricing from $0.27 to $0.07 per million tokens on repeated prefixes. This makes it particularly cost-effective for agents, RAG pipelines, and long-running conversations that reuse system prompts.

Pricing Plans

Open Source

$0 (permissive license)

    DeepSeek API

    Usage-based per million tokens (order-of-magnitude cheaper than US frontier APIs)

      See Full Pricing →Free vs Paid →Is it worth it? →

      Ready to get started with DeepSeek?

      View Pricing Options →

      Getting Started with DeepSeek

      1. 1Create a free account at chat.deepseek.com to test the models in the web interface
      2. 2Obtain API credentials from platform.deepseek.com to integrate DeepSeek models into your applications
      3. 3Choose between DeepSeek-V3 for fast general tasks ($0.14/M tokens) or DeepSeek-R1 for reasoning tasks ($0.55/M tokens)
      4. 4Download open-weight models from Hugging Face for self-hosting if you prefer zero ongoing API costs
      Ready to start? Try DeepSeek →

      Best Use Cases

      🎯

      Cost-sensitive agent and reasoning workloads where token spend dominates the bill

      ⚡

      Code generation, refactoring, and analysis with DeepSeek-Coder and Coder-V2

      🔧

      Self-hosted deployments where open weights are a hard procurement requirement

      🚀

      Long-context, repeat-prefix workloads that benefit from explicit prompt caching

      Integration Ecosystem

      2 integrations

      DeepSeek works with these platforms and services:

      💬 Communication
      Email
      🔗 Other
      api
      View full Integration Matrix →

      Limitations & What It Can't Do

      We believe in transparent reviews. Here's what DeepSeek doesn't handle well:

      • ⚠Hosted API routes all traffic through servers in China, blocking adoption in most regulated Western industries
      • ⚠Free web chat and API have suffered extended outages and new-account registration freezes during viral demand surges
      • ⚠Creative writing, nuanced tone, and non-Chinese/non-English multilingual output lag behind Claude and GPT-4
      • ⚠No native image generation, video, or advanced voice modalities as of April 2026, limiting it to text and code
      • ⚠Content filtering enforces Chinese regulatory restrictions on political, historical, and sensitive topics

      Pros & Cons

      ✓ Pros

      • ✓Open-weight frontier models under a permissive license — self-hosting on Together, Fireworks, Groq, or own GPUs is realistic
      • ✓OpenAI-compatible API with explicit context-cache discounts drops into existing SDK code with just a base-URL change
      • ✓Order-of-magnitude lower per-token pricing than US frontier APIs for comparable reasoning and coding capability

      ✗ Cons

      • ✗Data residency and policy concerns lead many US enterprises to avoid the official PRC-hosted API
      • ✗R1 reasoning traces are verbose, so output token spend and latency can balloon without careful budgeting
      • ✗Tool-calling and structured-output reliability still trails Claude and GPT for complex multi-step agent loops

      Frequently Asked Questions

      Is DeepSeek actually free to use?+

      Yes, the DeepSeek web chat at chat.deepseek.com and mobile apps are free to use with no usage caps for individual users. The paid offering is the developer API, which charges per token consumed rather than a monthly subscription. API pricing starts at $0.14 per million input tokens for DeepSeek-V3 cache hits and $0.55 per million for DeepSeek-R1, with output tokens at $1.10 and $2.19 respectively. New API accounts also receive free starter credits to test the platform.

      How does DeepSeek compare to ChatGPT and Claude for coding?+

      DeepSeek-V3 and R1 score within a few percentage points of GPT-4o and Claude 3.5 Sonnet on coding benchmarks like HumanEval, MBPP, and LiveCodeBench, while costing roughly 20-50x less per token. For pure code generation, debugging, and algorithmic reasoning, most independent benchmarks rank DeepSeek among the top four models globally. However, Claude still leads on long-context code refactoring and following complex multi-file instructions, while GPT-4o has a larger plugin and tool ecosystem. DeepSeek excels at competitive-programming-style problems and offers the unique advantage of open weights for fine-tuning on proprietary codebases.

      Is it safe to send company data to DeepSeek?+

      DeepSeek's hosted API routes data through servers in mainland China, which creates compliance challenges under GDPR, HIPAA, and US federal data regulations. For sensitive or regulated data, the recommended path is to self-host the open-weight DeepSeek-R1 or V3 models on your own infrastructure using Hugging Face, vLLM, or Ollama. Several US states and government agencies have banned DeepSeek's hosted app on official devices since early 2025, so enterprises should consult legal counsel before using the cloud API for production workloads involving personal data or proprietary information.

      What is DeepSeek-R1 and how is it different from V3?+

      DeepSeek-V3 is a general-purpose chat model optimized for fast, low-cost responses across coding, writing, and Q&A tasks. DeepSeek-R1 is a reasoning model that generates an explicit chain-of-thought before answering, similar to OpenAI's o1, making it stronger on math, logic puzzles, and multi-step problems but slower and more expensive per query. Use V3 for most everyday tasks and switch to R1 when you need rigorous step-by-step reasoning or higher accuracy on complex problems. Both models are released as open weights under the MIT license, so you can self-host either or both depending on your workload requirements.

      Can I fine-tune DeepSeek models for my own use case?+

      Yes, because DeepSeek released the full weights of V3 and R1 under the MIT license, you can fine-tune them on your own data without licensing restrictions or royalties. The community has already produced hundreds of distilled and fine-tuned variants on Hugging Face, including smaller 7B and 32B distillations of R1 that run on a single GPU. This is a significant advantage over ChatGPT and Claude, which only offer limited fine-tuning through their paid APIs and never release weights.

      🔒 Security & Compliance

      —
      SOC2
      Unknown
      —
      GDPR
      Unknown
      —
      HIPAA
      Unknown
      ✅
      SSO
      Yes
      ✅
      Self-Hosted
      Yes
      ✅
      On-Prem
      Yes
      ✅
      RBAC
      Yes
      ✅
      Audit Log
      Yes
      ✅
      API Key Auth
      Yes
      ✅
      Open Source
      Yes
      ✅
      Encryption at Rest
      Yes
      ✅
      Encryption in Transit
      Yes
      Data Residency: CHINA (HOSTED API); USER-CONTROLLED (SELF-HOSTED)
      📋 Privacy Policy →
      🦞

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      What's New in 2026

      DeepSeek-R1 was open-sourced under MIT license in January 2025, triggering a global AI market reaction including a single-day $600B drop in Nvidia's market cap. Throughout 2025 the company released distilled R1 variants (1.5B, 7B, 14B, 32B, 70B) that run on consumer hardware, and launched a dedicated iOS/Android app that briefly topped the US App Store. As of early 2026, DeepSeek continues to iterate on the V3 and R1 lineage with focus on reduced inference cost and improved tool-use and agentic capabilities. The platform has also expanded its API feature set to include function calling, JSON mode, and improved streaming support, bringing it closer to feature parity with OpenAI's API surface.

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      AI Chatbots and Assistants

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      User Reviews

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      Quick Info

      Category

      Foundation Models

      Website

      www.deepseek.com/
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