OpenAI · released
GPT-5.6 Terra
The mid-tier that quietly makes the flagship hard to justify.
Overview
Terra sits at half Sol's input price and lands within two points of it on every benchmark both models publish. For the large middle of production work, summarising, extraction, classification, drafting, this is the one the economics point to.
Solthar DNA rating, out of 5
- reasoning: 4.5
- coding: 4
- writing: 4.5
- vision: 4.5
- speed: 5
- value: 5
- context: 5
- tools: 4.5
Verdict
The default choice for production volume. Reach past it only when a task genuinely needs the top tier.