OpenAI

San Francisco, United StatesFounded 2015openai.com

OpenAI sells the GPT-6 models through its API. Its main open-weight models, gpt-oss-120b and gpt-oss-20b, are under Apache 2.0.

Flagship

GPT-6
Astra

Flagship

OpenAI's flagship reasoning model and the first it rates Critical for cybersecurity, sold through the API with a 1,050,000-token window.

Read: GPT-6 Astra

Lineup

Measure

  1. GPT-6 Astra

    Flagship

    Total
    Undisclosed
    Active
    Undisclosed
    Context
    1.05M

  2. GPT-6.1 Sol

    Total
    Undisclosed
    Active
    Undisclosed
    Context
    1.05M

  3. GPT-6 Luna

    Total
    Undisclosed
    Active
    Undisclosed
    Context
    1.05M

  4. gpt-oss-120b

    Total
    116.8B
    Active
    5.1B
    Context
    131k

  5. gpt-oss-20b

    Total
    20.9B
    Active
    3.6B
    Context
    131k

Other providers