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GPT OSS 120B vs GLM 5.1

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

SpecGPT OSS 120BGLM 5.1
ProviderSyntheticSynthetic
Input / 1M tokens$0.10$1.00
Output / 1M tokens$0.10$3.00
Context window128K197K
Parameters117B754B
Open weightsYesYes
ReleasedAug 2025Mar 2026

FAQ

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