Is GLM 5.1 or OpenAI GPT OSS 120B cheaper?

OpenAI GPT OSS 120B is cheaper on output tokens ($0.30 vs $5.50 per 1M).

Which has the larger context window, GLM 5.1 or OpenAI GPT OSS 120B?

GLM 5.1 has the larger context window (200K tokens).

GLM 5.1 vs OpenAI GPT OSS 120B

OpenAI GPT OSS 120B is cheaper on output tokens, while GLM 5.1 offers a larger context window. Choose GLM 5.1 or OpenAI GPT OSS 120B based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 5.1	OpenAI GPT OSS 120B
Provider	Venice AI	Venice AI
Input / 1M tokens	$1.75	$0.07
Output / 1M tokens	$5.50	$0.30
Context window	200K	128K
Parameters	754B	117B
Open weights	Yes	Yes
Released	Apr 2026	Nov 2025

GLM 5.1 details →OpenAI GPT OSS 120B details →

FAQ

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