Is Step 3.5 Flash or GLM-5.1 cheaper?

Step 3.5 Flash and GLM-5.1 have comparable output pricing.

Which has the larger context window, Step 3.5 Flash or GLM-5.1?

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

Step 3.5 Flash vs GLM-5.1

Both have similar output pricing, while Step 3.5 Flash offers a larger context window. Choose Step 3.5 Flash or GLM-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Step 3.5 Flash	GLM-5.1
Provider	Nvidia	Nvidia
Input / 1M tokens	$0.00	$0.00
Output / 1M tokens	$0.00	$0.00
Context window	256K	131K
Parameters	—	754B
Open weights	Yes	Yes
Released	Feb 2026	Mar 2026

Step 3.5 Flash details →GLM-5.1 details →

FAQ

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