Text & Chat · OpenAI
GPT-5.6
OpenAI's frontier model family, three tiers
[ Overview ]
OpenAI's July 2026 flagship release, shipped as three tiers (Luna, Terra, Sol) spanning cost-optimized to frontier reasoning, coding, and agentic performance.
[ Pros ]
- State-of-the-art coding and reasoning
- Tiered pricing for cost control
- Strong agentic tool use
[ Cons ]
- Sol tier is expensive at scale
- Closed weights
[ Tags ]
LLMreasoningagenticAPI