Is Step 2 (16K) or StepFun: Step 3.5 Flash cheaper?

StepFun: Step 3.5 Flash is cheaper on output tokens ($0.30 vs $16.44 per 1M).

Which has the larger context window, Step 2 (16K) or StepFun: Step 3.5 Flash?

StepFun: Step 3.5 Flash has the larger context window (262K tokens).

Step 2 (16K) vs StepFun: Step 3.5 Flash

StepFun: Step 3.5 Flash is cheaper on output tokens, while StepFun: Step 3.5 Flash offers a larger context window. Choose Step 2 (16K) or StepFun: Step 3.5 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 2 (16K)	StepFun: Step 3.5 Flash
Provider	StepFun	StepFun
Input / 1M tokens	$5.21	$0.09
Output / 1M tokens	$16.44	$0.30
Context window	16K	262K
Parameters	—	—
Open weights	No	Yes
Released	Jan 2025	Jan 2026

Step 2 (16K) details →StepFun: Step 3.5 Flash details →

FAQ

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