StepFun Reasoning Model text vision

Step 5 Preview Pricing & Token Costs

Official API rate card for Step 5 Preview provided by StepFun. All token pricing is normalized per 1 Million tokens ($/1M).

Token Pricing Rates ($/1M Tokens)

Input Tokens 1.0000 per 1M tokens
Output Tokens 2.7000 per 1M tokens
Prompt Cache Read $0.0500 per 1M tokens
Prompt Cache Write Not Supported per 1M tokens

Technical Specifications

Provider
StepFun
Context Window
1,000k tokens (1,000,000)
Max Output Tokens
66k tokens (65,536)
Reasoning Architecture
Yes
Supported Modalities
text, vision

Estimated Inference Costs

Example cost calculation for standard application workloads assuming a 3:1 input-to-output token ratio.

100,000 requests (500 in / 150 out) 0.09
1,000,000 requests (1,000 in / 300 out) 1.81
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