Step 5 Preview vs Claude Sonnet 5.5 Pricing Comparison

Head-to-head token pricing, context window limits, and blended inference cost comparison between Step 5 Preview (StepFun) and Claude Sonnet 5.5 (Anthropic).

Direct Answer Summary (3:1 Blended Cost)

Claude Sonnet 5.5 costs 2.8x more than Step 5 Preview on a 3:1 blended token workload. Step 5 Preview has a context window of 1000k tokens, while Claude Sonnet 5.5 provides 1000k tokens.

StepFun

Step 5 Preview

Input / 1M
$1.0000
Output / 1M
$2.7000
3:1 Blended / 1M
$1.4250
Context Window
1000k tokens
Anthropic

Claude Sonnet 5.5

Input / 1M
$2.0000
Output / 1M
$10.0000
3:1 Blended / 1M
$4.0000
Context Window
1000k tokens
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