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DeepSeek

AI assistant for research, coding, writing, reasoning, and complex tasks.

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What is DeepSeek?

DeepSeek is a free AI assistant for writing, coding, research, reasoning, and everyday tasks, with web, desktop, and API access.

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Pricing

Freemium (Free to use with limited features)

Overview

DeepSeek is an AI platform for chatting, coding, research, writing, and agent tasks. It offers web access, a desktop app, and an API for developers. Its latest V4.1-Flash model adds improved agent performance and native visual understanding.

Key Features

AI chat: Ask questions, write content, analyze information, and solve problems through DeepSeek Web.
Advanced reasoning: DeepSeek-V4.1-Flash supports both thinking and non-thinking modes for different tasks.
Multimodal understanding: V4.1-Flash can process visual information alongside text.
1M-token context: Supports up to a 1M-token context window for working with large amounts of information.
Agent capabilities: Built for coding agents and automated workflows, with support for tool calls and agent tasks.
API access: Developers can integrate DeepSeek models through OpenAI-compatible and Anthropic-compatible APIs.
Harness Desktop: Provides a desktop environment for using DeepSeek on more complex tasks.
Open-source models: DeepSeek provides open model weights and supports wider deployment through the open-source community.

Pros

Free AI assistant: DeepSeek offers free access through its web and mobile apps.
Strong coding support: Useful for coding, debugging, software development, and agent-based tasks.
Large context window: V4.1-Flash supports a 1M-token context window for processing long inputs.
Multimodal support: V4.1-Flash can understand visual information as well as text.
Developer-friendly API: Supports OpenAI and Anthropic API formats, tool calls, JSON output, and Responses API.
Open-source options: DeepSeek releases model weights and related research for community use and development.

Cons

API costs vary: API usage is billed by token, with different peak and off-peak rates.
Rapid model changes: DeepSeek regularly retires or replaces models, which can require API users to update integrations.
Advanced features can require technical setup: API, Harness, plugins, and agent workflows are better suited to users comfortable with developer tools.
AI output still needs review: As with other generative AI tools, users should check important answers, code, and generated content before relying on them.

Use Cases

Developers: Generate code, debug projects, run tests, and build AI agents.
Researchers: Process large documents, analyze information, and work with long-context tasks.
Content creators: Draft, rewrite, summarize, and organize written content.
Students: Explain concepts, solve problems, and assist with research and study tasks.
Businesses: Automate data processing, document work, research, and repetitive workflows.
AI builders: Integrate DeepSeek models into applications through its API and connect models with external tools.

Frequently Asked Questions

Is DeepSeek free to use?

Yes. DeepSeek offers a web and app experience for chatting with its AI. API usage is billed separately based on token consumption.

What can DeepSeek be used for?

DeepSeek can help with writing, coding, research, reasoning, and AI agent tasks. Its latest V4.1-Flash model also supports native visual understanding.

Does DeepSeek have an API?

Yes. Developers can use the DeepSeek API to build AI apps, products, workflows, and agents. The API supports OpenAI and Anthropic-compatible formats.

What is the latest DeepSeek model?

DeepSeek-V4.1-Flash is the latest model listed by DeepSeek. It supports text, agent tasks, and native multimodal visual understanding.

Does DeepSeek support long documents?

Yes. The DeepSeek API supports up to a 1M-token context window, allowing models to work with large amounts of information in one request.

How much does the DeepSeek API cost?

Pricing depends on the model, input and output tokens, and whether usage occurs during peak or off-peak hours. DeepSeek-V4.1-Flash has separate cache-hit, cache-miss, and output rates.