All models

GPT-OSS-120B

OpenAI · GPT-5.5

Released
Mar 1, 2026

API identifier

accounts/fireworks/models/gpt-oss-120b

Provider: fireworks

Test GPT-OSS-120B with YourBench

See how GPT-OSS-120B performs on the prompts that matter to you. YourBench tests them automatically when new models launch.

Get started free