Is Step 3.7 Flash (Free) or GPT-5.2-Pro cheaper?

Step 3.7 Flash (Free) is cheaper on output tokens ($0.00 vs $168.00 per 1M).

Which has the larger context window, Step 3.7 Flash (Free) or GPT-5.2-Pro?

GPT-5.2-Pro has the larger context window (400K tokens).

Step 3.7 Flash (Free) vs GPT-5.2-Pro

Step 3.7 Flash (Free) is cheaper on output tokens, while GPT-5.2-Pro offers a larger context window. Choose Step 3.7 Flash (Free) or GPT-5.2-Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 3.7 Flash (Free)	GPT-5.2-Pro
Provider	ZenMux	ZenMux
Input / 1M tokens	$0.00	$21.00
Output / 1M tokens	$0.00	$168.00
Context window	256K	400K
Parameters	—	—
Open weights	Yes	No
Released	May 2026	Dec 2025

Step 3.7 Flash (Free) details →GPT-5.2-Pro details →

FAQ

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