GPT-5.6 is planned for broader release soon.
As of June 29, 2026, the next OpenAI GPT release publicly announced is GPT-5.6, especially GPT-5.6 Sol as the flagship model
The GPT-5.6 family includes:
- Sol: flagship model
- Terra: balanced, lower-cost model
- Luna: fastest and cheapest model
OpenAI says GPT-5.6 is currently in limited preview and is planned for broader availability in the coming weeks.
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