Is Step 3.5 Flash or GLM 4.5 cheaper?

Step 3.5 Flash is cheaper on output tokens ($0.50 vs $1.30 per 1M).

Which has the larger context window, Step 3.5 Flash or GLM 4.5?

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

Step 3.5 Flash vs GLM 4.5

Step 3.5 Flash is cheaper on output tokens, while Step 3.5 Flash offers a larger context window. Choose Step 3.5 Flash or GLM 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 3.5 Flash	GLM 4.5
Provider	NanoGPT	NanoGPT
Input / 1M tokens	$0.20	$0.30
Output / 1M tokens	$0.50	$1.30
Context window	256K	128K
Parameters	—	355B
Open weights	No	No
Released	Feb 2026	Apr 2025

Step 3.5 Flash details →GLM 4.5 details →

FAQ

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