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deepseek-v4.1-flash
DeepSeek API Pricing
Transparent pricing with no hidden fees. Pay only for what you use.
Token Pricing
Per 1M tokens
| Rate | Price |
|---|---|
| Input | 2.2857 Credits~¥0.2286 |
| Cached input | 0.2286 Credits~¥0.0229 |
| Output | Free |
Context limits
- Maximum input tokens
- 1,000,000
- Maximum output tokens
- 393,216
DeepSeek API - Open-Source Language Models
Access DeepSeek V4 Pro for complex tasks, DeepSeek V4.1 Flash for fast, low-cost chat, and DeepSeek-R1 for deep reasoning. Open-source models at a fraction of the cost.
50K+
Active Users
99.9%
Uptime
2x
Faster
70%
Cost Savings
DeepSeek API Key Features
Why DeepSeek is the top open-source choice for AI developers
Chain-of-Thought Reasoning
Exceptional Value
Strong Coding
Document OCR
Fast & Versatile
Multilingual Support
Open-Source / Open-Weight
Long Context Support
DeepSeek API Use Cases
How teams use DeepSeek models in production
Research & Analysis
Code Generation
Cost-Effective Chat
Long Document Q&A
Content Creation
Translation
Getting Started with DeepSeek API
Start using DeepSeek models in minutes
Sign up & Add funds
Create your free 光谱汇深 account and top up your balance.
Get API Key
Generate an API key to access DeepSeek models programmatically.
Start Building
Use the playground above or integrate via the OpenAI-compatible API.
User Reviews
What developers say about our DeepSeek API
“DeepSeek-R1 matches o1 on our math benchmarks at 1/10 the cost. Incredible value.”
Alex Chen
ML Engineer
“V3 is our default model for general chat. Fast, capable, and extremely affordable.”
Sarah Li
Product Manager
“DeepSeek V4.1 Flash is perfect for our research assistant product. Fast answers and strong long-context analysis.”
Mike Wang
Senior Developer
“We run R1-distill-32b for high-volume tasks. Same great reasoning at a lower price point.”
Emily Zhou
AI Engineer
“DeepSeek's coding ability is surprisingly strong. It handles complex refactoring tasks well.”
David Liu
Tech Lead
“Best price-to-performance ratio in the market. We migrated our entire pipeline to DeepSeek.”
Lisa Zhang
CTO
Frequently Asked Questions
Common questions about using the DeepSeek API
What DeepSeek models are available?
We offer the latest DeepSeek V4.1 Flash, V4 Flash, and V4 Pro, plus DeepSeek-R1 (reasoning), DeepSeek-V3.2, and DeepSeek-OCR. Earlier versions such as V3 and V3.1 remain available.
What is DeepSeek-R1?
R1 is DeepSeek's reasoning model that uses chain-of-thought to solve complex math, logic, and coding problems step by step.
How is pricing calculated?
Token-based pricing (input + output). DeepSeek models are among the most cost-effective frontier models available.
Is the API compatible with OpenAI's SDK?
Yes. DeepSeek models use the standard chat completions format and work with the OpenAI SDK.
Is my data secure?
Yes. Your API data is not stored or used for training. All requests are encrypted.
Which model should I choose?
DeepSeek V4.1 Flash or V4 Flash for fast, low-cost chat. DeepSeek V4 Pro for complex tasks. DeepSeek-R1 for step-by-step reasoning. DeepSeek-OCR for text recognition in images and documents.
What is the DeepSeek V4 context window?
In 光谱汇深's model catalog, the DeepSeek 4 generation offers long context: V4 Pro and V4.1 Flash accept up to 1M input tokens, and V4 Flash accepts up to 128K. Choose V4 Pro or V4.1 Flash for long documents and large codebases, and check the pricing table above for each model's rates.
Is there a discount on DeepSeek API pricing?
Yes. The DeepSeek API is billed per million tokens, with input and output tokens priced separately. The pricing table on this page lists every model and specification, and the prices shown are Gold member prices (20% off). Platinum and Diamond members save even more, up to 28%, and you only pay for successful requests.
How do I get a DeepSeek API key?
Sign up for an 光谱汇深 account, open the API Keys page and create a key. The same key works for the DeepSeek API and every other model on 光谱汇深, with pay-as-you-go billing and no subscription.
How do I use the DeepSeek V4 API?
DeepSeek models on 光谱汇深 use the OpenAI-compatible Chat Completions format. Use your 光谱汇深 key, pick a DeepSeek model such as DeepSeek V4 Pro or DeepSeek V4.1 Flash, and send your messages with the OpenAI SDK or any HTTP client. Model IDs, parameters, and code examples are in the 光谱汇深 docs (docs.callhub.cn).
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