DeepSeek Reasoner via DeepSeek
Specifications
Context Window
128,000 tokens
Release Date
2025-12-01
Capabilities
AttachmentsReasoningTool callingTemperature
Availability
Open Weights
Model Overview
DeepSeek is a Chinese AI research lab known for high-performance open-source models. Their DeepSeek-V3 and DeepSeek-R1 models have gained recognition for strong reasoning and coding capabilities at remarkably low costs.
DeepSeek Reasoner is a deepseek-thinking-family model by DeepSeek with a 128k token context window and up to 64k output tokens. It is priced at $0.2800/1M input tokens and $0.4200/1M output tokens.
Key capabilities include: attachments, reasoning, tool calling, temperature. It supports advanced reasoning for complex multi-step tasks. It can call external tools and functions for agentic workflows.
Details
ProviderDeepSeek
Model IDdeepseek-reasoner
Familydeepseek-thinking
Release Date2025-12-01
Last Updated2026-02-28
Knowledge Cutoff2025-09
Context Window128,000 tokens
Max Output64,000 tokens
Input Cost / 1M$0.2800
Output Cost / 1M$0.4200
Cache Read / 1M$0.0280
Developer Resources
More models from DeepSeek
Frequently Asked Questions
How much does DeepSeek Reasoner cost to use?
DeepSeek Reasoner is priced at $0.2800/1M input tokens and $0.4200/1M output tokens. Use the cost estimator on this page to calculate your expected spend based on your usage pattern.
What is a token and how does it relate to pricing?
A token is a chunk of text — roughly ¾ of a word in English. For example, "chatbot" is two tokens. LLM API pricing is based on the number of tokens you send (input) and receive (output). Input tokens include your prompts, uploaded documents, and images, while output tokens are the model's generated responses.
Why are input and output tokens priced differently?
LLM providers charge separately for input and output tokens. Output tokens are typically more expensive because generating each token requires more compute — the model must run a full forward pass for every token it produces, while input tokens are processed in parallel.
What is the context window of DeepSeek Reasoner?
DeepSeek Reasoner supports a context window of 128,000 tokens. This is the maximum number of tokens (input + output combined) the model can process in a single request. Larger context windows let you send longer documents or maintain longer conversation histories.
How accurate is this cost estimation?
This tool provides a ballpark estimate based on per-token pricing. Actual costs may differ due to prompt caching, batched API calls, volume discounts, reasoning token overhead, and provider-specific billing rules. Use it for budgeting and comparison, not as an invoice prediction.
How does DeepSeek Reasoner pricing compare to other models?
You can compare DeepSeek Reasoner with other models on our LLM API pricing calculator. Use the cost estimator to see side-by-side cost breakdowns across different providers and models to find the best fit for your budget and requirements.
What factors affect my total API cost?
Your total cost depends on several factors: the number of API calls you make, the length of your prompts (input tokens), the length of generated responses (output tokens), whether you use features like image or document uploads (which add input tokens), and any provider-specific charges for caching or batch processing.
How can my team use DeepSeek Reasoner via API?
You can connect your own DeepSeek API key and give your entire team access to DeepSeek Reasoner through TypingMind Teams. It lets you build a unified AI workspace where team members can use DeepSeek Reasoner and other models — without needing their own API keys. You stay in control of usage limits, costs, and permissions, all from a single dashboard.
