OpenAI's larger open model for advanced reasoning, agents and tool use. MXFP4 lets it fit on a single 80GB GPU.
Which GPU does GPT-OSS 120B need?
The entry configuration is 1x A100, which delivers around 32 tokens per second. For more parallel requests and headroom on speed, go with 1x H200.
How much does GPT-OSS 120B cost?
An hour of GPT-OSS 120B runs from $2.50 to $8.26 depending on the GPU configuration. Billing is hourly: you pay for server time, not for tokens.
How do I call GPT-OSS 120B from my code?
Once deployed you get an OpenAI-compatible endpoint: point any OpenAI client at the base_url you receive and pass gpt-oss:120b as the model name. Code written against the OpenAI API needs no changes.
Does the data stay private?
Yes. GPT-OSS 120B runs on a dedicated GPU server inside a private loop: requests and responses never reach the model vendor and are not used for training.
What context window and license does GPT-OSS 120B have?
GPT-OSS 120B holds 32K tokens of context per request and ships under the Apache 2.0 license, so you can use it commercially on your own hosting terms.