Is StepFun: Step 3.5 Flash or Anthropic: Claude Opus 4.5 cheaper?

StepFun: Step 3.5 Flash is cheaper on output tokens ($0.30 vs $25.00 per 1M).

Which has the larger context window, StepFun: Step 3.5 Flash or Anthropic: Claude Opus 4.5?

StepFun: Step 3.5 Flash has the larger context window (256K tokens).

StepFun: Step 3.5 Flash vs Anthropic: Claude Opus 4.5

StepFun: Step 3.5 Flash is cheaper on output tokens, while StepFun: Step 3.5 Flash offers a larger context window. Choose StepFun: Step 3.5 Flash or Anthropic: Claude Opus 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	StepFun: Step 3.5 Flash	Anthropic: Claude Opus 4.5
Provider	Kilo Gateway	Kilo Gateway
Input / 1M tokens	$0.10	$5.00
Output / 1M tokens	$0.30	$25.00
Context window	256K	200K
Parameters	—	—
Open weights	Yes	No
Released	Jan 2026	Nov 2025

StepFun: Step 3.5 Flash details →Anthropic: Claude Opus 4.5 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.