Is Step 3.5 Flash 2603 or Gemini 3 Pro Image cheaper?

Step 3.5 Flash 2603 is cheaper on output tokens ($0.30 vs $12.00 per 1M).

Which has the larger context window, Step 3.5 Flash 2603 or Gemini 3 Pro Image?

Gemini 3 Pro Image has the larger context window (1M tokens).

Step 3.5 Flash 2603 vs Gemini 3 Pro Image

Step 3.5 Flash 2603 is cheaper on output tokens, while Gemini 3 Pro Image offers a larger context window. Choose Step 3.5 Flash 2603 or Gemini 3 Pro Image based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 3.5 Flash 2603	Gemini 3 Pro Image
Provider	NanoGPT	NanoGPT
Input / 1M tokens	$0.10	$2.00
Output / 1M tokens	$0.30	$12.00
Context window	256K	1M
Parameters	—	—
Open weights	No	No
Released	Apr 2026	Nov 2025

Step 3.5 Flash 2603 details →Gemini 3 Pro Image details →

FAQ

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