Alex Getmanearly AI signals

GPT-OSS 120B

OpenAI

ReleasedUpdated
Context window
131K
131,072 tokens
Max output
131K
131,072 tokens
Input / Output
text → text

Timeline

  1. · Open weights · evidence link · evidence link · evidence link

Signals 2

OpenAISighting

Kimi K3

ConfirmedOpen weights13 evidence links
Specifications

GPT-OSS 120B is a model from OpenAI with open weights, first recorded on 17 Sep 2026; its release date is not established. The context window is 131,072 tokens. The maximum output is 131,072 tokens.

Context window
131,072
Max output
131,072
Input
text
Output
text
Weights
Open

Questions

What is the context window of GPT-OSS 120B?

The context window is 131,072 tokens. The maximum output is 131,072 tokens.

Are the weights of GPT-OSS 120B publicly available?

Yes. OpenAI publishes the weights.

When was GPT-OSS 120B released?

Its release date is not established. Signal Forge first recorded it on 17 Sep 2026.