Is Step 3.5 Flash 2603 or Step 2 (16K) cheaper?

Step 3.5 Flash 2603 is cheaper on output tokens ($0.30 vs $16.44 per 1M).

Which has the larger context window, Step 3.5 Flash 2603 or Step 2 (16K)?

Step 3.5 Flash 2603 has the larger context window (256K tokens).

Step 3.5 Flash 2603 vs Step 2 (16K)

Step 3.5 Flash 2603 is cheaper on output tokens, while Step 3.5 Flash 2603 offers a larger context window. Choose Step 3.5 Flash 2603 or Step 2 (16K) based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 3.5 Flash 2603	Step 2 (16K)
Provider	StepFun	StepFun
Input / 1M tokens	$0.10	$5.21
Output / 1M tokens	$0.30	$16.44
Context window	256K	16K
Parameters	—	—
Open weights	Yes	No
Released	Apr 2026	Jan 2025

Step 3.5 Flash 2603 details →Step 2 (16K) details →

FAQ

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