Is Step 3.5 Flash or GLM 5.1 cheaper?

Step 3.5 Flash is cheaper on output tokens ($0.29 vs $3.00 per 1M).

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

Step 3.5 Flash has the larger context window (262K tokens).

Step 3.5 Flash vs GLM 5.1

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 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	routing.run	routing.run
Input / 1M tokens	$0.10	$1.00
Output / 1M tokens	$0.29	$3.00
Context window	262K	203K
Parameters	—	754B
Open weights	Yes	Yes
Released	Jan 2026	Apr 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.