Is Step 2 (16K) or Step 3.7 Flash cheaper?

Step 3.7 Flash is cheaper on output tokens ($1.11 vs $16.44 per 1M).

Which has the larger context window, Step 2 (16K) or Step 3.7 Flash?

Step 3.7 Flash has the larger context window (256K tokens).

Step 2 (16K) vs Step 3.7 Flash

Step 3.7 Flash is cheaper on output tokens, while Step 3.7 Flash offers a larger context window. Choose Step 2 (16K) or Step 3.7 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 2 (16K)	Step 3.7 Flash
Provider	StepFun (Global)	StepFun (Global)
Input / 1M tokens	$5.21	$0.19
Output / 1M tokens	$16.44	$1.11
Context window	16K	256K
Parameters	—	—
Open weights	No	Yes
Released	Jan 2025	May 2026

Step 2 (16K) details →Step 3.7 Flash details →

FAQ

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