DeepSeek
by DeepSeek
AI assistant and open model platform from DeepSeek focused on reasoning, coding, research, mathematics, and agentic tasks.
DeepSeek is an AI company and model platform known for developing large language models focused on reasoning, coding, mathematics, research, and agentic workflows. DeepSeek provides a free AI assistant through its web and mobile applications, while developers can access its models through an API compatible with OpenAI-style interfaces. Its V4 model family includes DeepSeek-V4.1-Flash and DeepSeek-V4-Pro, with support for long context, reasoning, tool calling, and developer-oriented workflows. DeepSeek also publishes model weights and technical research for several of its model families.
Provider
DeepSeek
Category
AI Chat
Available On
Web, Android, iOS, API
Launched
Jan 2025
Use Cases
Coding, Software Development, Research, Mathematics
Best For
Coding, technical problem solving, reasoning, mathematics, research, and developer-focused AI workflows
🧠 Models (4)
DeepSeek-V4.1-FlashvV4.1-Flash
Multimodal Reasoning
Context Window
1M tokens
Input
text, image
Output
text
DeepSeek-V4-ProvV4-Pro
Reasoning
Context Window
1M tokens
Input
text
Output
text
DeepSeek-V4-FlashvV4-Flash
Multimodal
Context Window
1M tokens
Input
text, image
Output
text
DeepSeek-V3.2vV3.2
Reasoning
Context Window
Long-context
Input
text
Output
text
✨ Features (11)
Deep Reasoning
Supports dedicated thinking and reasoning modes for complex technical, mathematical, and problem-solving tasks
Agentic Tool Use
DeepSeek V4 models support tool calling and reasoning integrated with tool-use workflows
Vision
DeepSeek-V4.1-Flash provides native visual understanding for supported image inputs
Million-Token Context
Current V4 models support up to 1 million tokens of context
OpenAI API Compatibility
DeepSeek API provides an OpenAI-compatible interface for supported integrations
Anthropic API Compatibility
DeepSeek provides an Anthropic-compatible API endpoint
Responses API
DeepSeek supports the OpenAI Responses API format for compatible developer workflows
Codex Integration
DeepSeek provides configuration support for using its models with Codex
JSON Output
Supported API models can generate structured JSON output
Thinking Effort Control
V4 Pro and V4 Flash support configurable reasoning effort levels including low, high, and max
Open Model Releases
DeepSeek publishes model weights and technical research for supported model families
💰 Pricing
✓ Free Plan
✕ Free Trial
✕ Paid Plan
✕ Enterprise
Starting Price
Free
Billed free
API Pricing
Usage-based pricing. V4.1-Flash: $0.15/1M input, $0.60/1M output (off-peak). V4-Pro: $0.66/1M input, $1.98/1M output (off-peak).
More Info
View pricing page ↗💬 Prompt Library (5)
Debug Code
CodingDebug and improve existing code
Analyze the following code carefully. Find bugs, security vulnerabilities, logical errors, and performance problems. Explain each issue and then provide an improved version of the code. ```[PASTE CODE HERE]```
Build Project
CodingPlan and build a complete software project
Create a complete plan and implementation for the following software project: [PROJECT IDEA]. Define the architecture, database structure, APIs, frontend, backend, security requirements, and deployment steps. Then generate the required code.
Solve Problem
GeneralGet detailed reasoning for complex problems
Solve the following problem step by step. Carefully verify the reasoning, consider alternative approaches, and provide the final answer with a clear explanation. [PROBLEM]
Research Topic
ResearchPerform structured technical research
Analyze the topic '[TOPIC]' in depth. Break it into the most important concepts, explain the evidence and technical details, identify uncertainties, and provide a structured research summary.
Code Review
CodingPerform a senior-level code review
Review the following code as a senior software engineer. Check architecture, readability, security, performance, scalability, error handling, and maintainability. Give specific recommendations and an improved version where appropriate. ```[PASTE CODE HERE]```
🔗 Integrations (7)
DeepSeek API
api
Developer API for accessing DeepSeek models
OpenAI SDK
developer
Use DeepSeek through an OpenAI-compatible API interface
Anthropic SDK
developer
Use supported DeepSeek models through the Anthropic-compatible API interface
Codex
coding
Use DeepSeek models with Codex through the Responses API configuration
DeepSeek Harness
agent
Developer-focused harness for working with DeepSeek models and agent workflows
Hugging Face
model-hosting
Hosts published DeepSeek model weights and related model resources
ModelScope
model-hosting
Provides DeepSeek model resources and downloadable model releases
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⚠️ Limitations
- •AI-generated responses can contain inaccurate or incorrect information
- •API access is usage-based and requires an API key with available balance
- •API pricing varies by model and peak or off-peak usage period
- •API rate and concurrency limits apply
- •Some models and features may have different availability across the web, app, and API
- •Some legacy model identifiers have been retired and may route to newer models
- •Advanced reasoning can use substantially more tokens than simple responses
📚 Sources
- https://api-docs.deepseek.com/updates/(official)
- https://api-docs.deepseek.com/quick_start/pricing/(official)
- https://api-docs.deepseek.com/api/list-models/(official)
- https://api-docs.deepseek.com/api/create-response/(official)
- https://api-docs.deepseek.com/news/news260813/(official)
- https://www.deepseek.com/en/transparency/(official)