GPT-5.6 Terra
GPT-5.6 Terra is the balanced everyday model in OpenAI’s GPT-5.6 family, released on July 9, 2026.
- Lab
- OpenAI
- Release date
- Status
- Generally available
- API model ID
- gpt-5.6-terra
- Context window
- 1,050,000 tokens
- Max output
- 128,000 tokens
OpenAI released GPT-5.6 Terra, the balanced model for everyday work in the GPT-5.6 family, on July 9, 2026. OpenAI’s model page lists it as gpt-5.6-terra, with a 1,050,000-token context window, 128,000 max output tokens, and text and image input with text output. In ChatGPT and Codex it is the GPT-5.6 model for Free and Go users, and paid users can choose it alongside Sol and Luna; it is also available through the OpenAI API.
- Modalities
- Text and image input; text output
- Availability
- ChatGPT and Codex for Free and Go users, selectable by Plus, Pro, Business and Enterprise users; OpenAI API.
- Official source
- openai.com
- Last checked
Questions
When was GPT-5.6 Terra released?
Can free ChatGPT users use GPT-5.6 Terra?
What is the context window of GPT-5.6 Terra?
Source
Release dates, model IDs and limits come from each lab’s own announcement, changelog, documentation or deprecations page, linked on every model with the date it was last checked. How we pick and check sources: editorial standards.