AI summarized from verified sources
Switch between speed and depth more easily
Choose the right mix of speed and reasoning for each task.
SOURCE CHECK
42 sources
Sources
Primary / openai.com
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Key Points
- 1Three variants: Sol, Terra, Luna
- 2Programmatic Tool Calling in API
- 3More control over prompt caching
- 4More flexible image handling
GPT-5.6 comes in Sol, Terra, and Luna variants, making it easier to choose by task. The API also adds more tool-calling and reasoning controls for workflow design.
Key point
GPT-5.6 is available in ChatGPT, Codex, and the OpenAI API. The API adds finer control over tool calls and reasoning so workflows can be tuned more precisely.
Impact
It is easier to fit the model to long tasks and multi-step automation. Developers can balance cost, speed, and capability more deliberately.
What changed
GPT-5.6 comes in Sol, Terra, and Luna variants, making it easier to choose by task. The API also adds more tool-calling and reasoning controls for workflow design.