Definition
Plain language
OpenAI's family of openly released language models.
As stated in the literature
OpenAI's open-weight model series including GPT-OSS-120B; used as a frontier baseline in several agent and reasoning benchmarks.
Also called: GPT-OSS-120B, gpt-oss
Why it matters: Open weights from a major lab let academics and small teams probe a frontier-style model in ways closed APIs don't allow.
For example, papers comparing reasoning approaches often run GPT-OSS-120B alongside Llama and Qwen models as an OpenAI-lineage open-weight reference.
Heard on the show
“The safest models were the general-purpose ones — both GPT-OSS models landed between eight and twelve percent, the twenty-billion and the hundred-and-twenty-billion alike, so it wasn't about size.”Episode 214 — The Medical AI Answer That's Accurate, Sourced, and Still Wrong