Is Step 3.5 Flash 2603 or Step 1 (32K) cheaper?

Step 3.5 Flash 2603 is cheaper on output tokens ($0.30 vs $9.59 per 1M).

Which has the larger context window, Step 3.5 Flash 2603 or Step 1 (32K)?

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

Step 3.5 Flash 2603 vs Step 1 (32K)

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 1 (32K) based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 3.5 Flash 2603	Step 1 (32K)
Provider	StepFun	StepFun
Input / 1M tokens	$0.10	$2.05
Output / 1M tokens	$0.30	$9.59
Context window	256K	33K
Parameters	—	—
Open weights	Yes	No
Released	Apr 2026	Jan 2025

Step 3.5 Flash 2603 details →Step 1 (32K) details →

FAQ

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