DeepSeek API Pricing Calculator & Complete Cost Guide
Calculate DeepSeek V3.2 API costs per token and per month. Up to 95% cheaper than GPT-5 with automatic context caching.
Pricing TLDR
- • 5 million free tokens for new users (no credit card required)
- • Pay-per-token: Cache hit ($0.028) • Cache miss ($0.28) • Output ($0.42) per million tokens
- • Automatic context caching • 128K context window • Up to 95% cheaper than GPT-5
DeepSeek API Cost Calculator - Monthly Pricing
Calculate by
Input Tokens
Output Tokens
API Calls / Month
Quick Examples:
Context Caching:
Cache Hit Rate:
50%
(Cache hit: $0.028/M vs Cache miss: $0.28/M)
DeepSeek automatically caches context. When requests share the same prefix, cached segments are reused.
DeepSeek V3.2 (deepseek-reasoner)
Context
64K output
Quality
Per 1M Tokens
In: $0.15
Out: $0.42
(50% cache hits)
Monthly Cost
DeepSeek V3.2 (deepseek-chat)
Context
8K output
Quality
Per 1M Tokens
In: $0.15
Out: $0.42
(50% cache hits)
Monthly Cost
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About DeepSeek API
What is DeepSeek API?
The DeepSeek API provides programmatic access to DeepSeek's V3.2 model in two modes: non-thinking (deepseek-chat) for general tasks and thinking mode (deepseek-reasoner) for advanced reasoning. DeepSeek offers exceptional value - up to 95% cheaper than GPT-5 while maintaining competitive performance. Both modes feature automatic context caching that reduces costs for repeated prompts.
- Extremely Cost-Effective: DeepSeek V3.2 is one of the most affordable frontier APIs available. At $0.28/$0.42 per million tokens (cache miss), it's up to 95% cheaper than GPT-5 ($1.25/$10) and significantly less than Claude Sonnet 4 ($3/$15).
- Automatic Context Caching: Context caching is enabled by default. When requests share the same prefix as recent ones, cached segments are retrieved from disk automatically. Cache hits cost only $0.028/M tokens (90% cheaper than cache miss).
- Thinking & Non-Thinking Modes: Choose deepseek-reasoner (thinking mode) for Chain-of-Thought reasoning with 64K max output for math, logic, and code tasks. Use deepseek-chat (non-thinking mode) for general tasks with 8K max output.
When to Use DeepSeek API
DeepSeek is ideal for cost-sensitive applications that need good AI capability without frontier pricing. Use thinking mode (deepseek-reasoner) for complex reasoning tasks and non-thinking mode (deepseek-chat) for general-purpose workloads.
Ideal for
- Cost-sensitive production applications
- High-volume batch processing
- Math, logic, and coding tasks (use thinking mode)
- General chatbots and content generation (use non-thinking mode)
- Applications with repetitive prompts (benefits from caching)
Not ideal for
- Applications requiring maximum frontier capability
- Use cases needing specific tool integrations not offered
- Regions where DeepSeek API may have latency issues
- Tasks requiring guaranteed deterministic outputs
DeepSeek API Pricing Breakdown
Free Tier
New users receive 5 million free tokens upon registration with no credit card required. These credits are automatically applied to your usage and work across all models.
- Sign up at platform.deepseek.com - no credit card required
- Receive 5 million free tokens instantly
- Credits work across both deepseek-chat and deepseek-reasoner
- Additional credits can be purchased as needed
Key Features
Automatic Context Caching
All requests automatically benefit from context caching. When prompts share the same prefix, cached content is reused. Cache hits cost just $0.028/M tokens vs $0.28/M for cache misses - a 90% savings.
V3.2 Unified Pricing
As of September 29, 2025, DeepSeek V3.2 powers both deepseek-chat and deepseek-reasoner with unified pricing: $0.028 cache hit, $0.28 cache miss, $0.42 output per million tokens.
Large Context Window
Both modes support 128K token context windows. Thinking mode (reasoner) supports up to 64K output tokens for detailed Chain-of-Thought reasoning, while non-thinking mode (chat) supports 8K output.
OpenAI-Compatible API
DeepSeek API follows OpenAI's API format, making it easy to migrate existing applications. Simply update your base URL and API key to switch providers.
DeepSeek Model Comparison
Quality Score
deepseek-chat (non-thinking)
deepseek-reasoner (thinking)
Context Window
deepseek-chat (non-thinking)
deepseek-reasoner (thinking)
Max Output
deepseek-chat (non-thinking)
deepseek-reasoner (thinking)
Chain-of-Thought
deepseek-chat (non-thinking)
deepseek-reasoner (thinking)
Best For
deepseek-chat (non-thinking)
deepseek-reasoner (thinking)
Tool Calling
deepseek-chat (non-thinking)
deepseek-reasoner (thinking)
JSON Output
deepseek-chat (non-thinking)
deepseek-reasoner (thinking)
Note: Both models use DeepSeek V3.2. When using deepseek-reasoner with the tools parameter, requests are processed using deepseek-chat (non-thinking mode) internally.
DeepSeek API Monthly Cost Estimates
Light Use
$1-5/mo
• Personal projects
• <1K requests/day
• Either mode works
Medium Use
$5-25/mo
• Small apps
• 1-5K requests/day
• Non-thinking for general, thinking for reasoning
Heavy Use
$25-125/mo
• Production apps
• 5-20K requests/day
• Optimize cache hit rate
Enterprise
$125+/mo
• Large scale
• 20K+ requests/day
• High cache utilization
6 DeepSeek API Cost Optimization Tips
Maximize Cache Hit Rate
Structure prompts with consistent prefixes (system prompts, instructions) to maximize cache hits. Cache hits cost $0.028/M vs $0.28/M for misses - a 90% savings. Aim for 70%+ cache hit rates in production.
Use Non-Thinking Mode for Simple Tasks
deepseek-chat (non-thinking mode) scores 63 on quality benchmarks and is sufficient for classification, summarization, and general queries. Reserve deepseek-reasoner (thinking mode, score 82) for complex math, logic, and code tasks.
Batch Similar Requests
Group requests with similar prompts together to benefit from context caching. The system automatically caches and retrieves shared prefixes, reducing costs on subsequent requests.
Optimize Output Length
Thinking mode supports 64K output but costs accumulate at $0.42/M. Set appropriate max_tokens limits for your use case. Non-thinking mode's 8K limit is often sufficient for general tasks.
Compare with Competitors
DeepSeek V3.2's $0.28/$0.42 pricing is up to 95% cheaper than GPT-5 ($1.25/$10). For cost-sensitive workloads where DeepSeek's capability (82 for thinking mode) is sufficient, the savings are substantial.
Monitor Token Usage
Track your cache hit rates and token consumption via the DeepSeek platform. Understanding your caching patterns helps optimize prompt design and reduce costs further.
DeepSeek Model Selection Guide
Use Case
Customer Support Chat
Recommended Model
deepseek-chat
Non-thinking mode
Monthly Cost (Est.)
~$1-6
Why This Model?
Fast, affordable for general queries
Use Case
Code Generation
Recommended Model
deepseek-reasoner
Thinking mode
Monthly Cost (Est.)
~$4-20
Why This Model?
Higher quality (82), Chain-of-Thought
Use Case
Math & Logic Problems
Recommended Model
deepseek-reasoner
Thinking mode
Monthly Cost (Est.)
~$3-15
Why This Model?
Step-by-step reasoning, 64K output
Use Case
Content Writing
Recommended Model
deepseek-chat
Non-thinking mode
Monthly Cost (Est.)
~$2-10
Why This Model?
Good for general content, 8K output
Use Case
Data Extraction
Recommended Model
deepseek-chat
Non-thinking mode
Monthly Cost (Est.)
~$1-5
Why This Model?
JSON output support, tool calling
Use Case
High-Volume Batch
Recommended Model
deepseek-chat
With high cache rate
Monthly Cost (Est.)
~$3-25
Why This Model?
Maximize cache hits for lowest cost
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DeepSeek API Pricing FAQ
Common questions about DeepSeek API costs, billing, and optimization
