GPT-5.6 Terra

Overview

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...

How to use / API access

Call via OpenRouter with model id `openai/gpt-5.6-terra`.

• openrouter · openai/gpt-5.6-terra Docs

OpenRouter id: openai/gpt-5.6-terra

Benchmarks

• Intelligence Index (artificial-analysis) : 55 index
• Coding Index (artificial-analysis) : 76.7 index
• Agentic Index (artificial-analysis) : 47.4 index

Notes

GPT-5.6 Terra is listed in the EDNA Models directory from the OpenRouter catalogue.