DeepSeek API Model Specifications

Model Comparison

Model	Context Length	Max CoT Tokens	Max Output Tokens	Input Price (per 1M tokens)	Output Price (per 1M tokens)
deepseek-chat	64K	-	8K	$0.30	$1.80
deepseek-reasoner	64K	32K	8K	$0.55	$2.20

Model Versions

deepseek-chat corresponds to DeepSeek-V3

deepseek-reasoner corresponds to DeepSeek-R1

Chain of Thought (CoT)

CoT represents the reasoning process generated by deepseek-reasoner before producing the final answer

These intermediate reasoning steps are included in the token count and pricing

Token Management

Default maximum output length is 4K tokens if max_tokens is not specified

Adjust max_tokens parameter as needed for longer outputs

Pricing Structure

For deepseek-reasoner, both CoT tokens and final answer tokens are counted and priced at the same rate

Pricing is calculated based on the total token count including all reasoning steps

This is a temporary pricing. The pricing will only go DOWN for the time being.

For comprehensive API documentation and advanced feature's user guide, please visit Deepseek Official API guide.