AI model · OpenAI
GPT-5.6 Terra
Model ID: openai/gpt-5.6-terra
- Input
- $2 per 1M tokens
- Output
- $12 per 1M tokens
- Context
- 1.1M tokens at once
- Max output
- 128K tokens per reply
- Released
- 9 Jul 2026 OpenAI
What it can do
- YesReasoning
- YesTool calling
- YesImage input
- NoOpen weights
- NoFree to use
Takes file, image, text; gives text.
How its listing describes it
GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...
Sources
- OpenAI: GPT-5.6 Terra on OpenRouter — read 2 Oct 2026