Expired65% confidenceReleaseExact time
GPT-5.6, codenamed 'Sol,' will be launched to the public simultaneously with two companion products, Terra and Luna.
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
7/12/2026
First Seen
Valid until: 10/10/2026(expired)
Sources
Related Claims
VerifiedGPT-5.6 is no longer a single model but has been split into three tiers: Sol, Tera, and Luna.80% similarVerifiedThe three variants of GPT-5.6—Sol, Terra, and Luna—were simultaneously made available to all users, with ChatGPT, Codex, and the API all accessible.79% similarUnverifiedIn the GPT-5.6 Codex evaluation, three different model tier configurations—Sol, Terra, and Luna—were set up.79% similarVerifiedThe core foundation of this update is the new frontier model GPT-5.6 (codenamed Sol in the demo), which is open to all users.78% similarUnverifiedApplication-side demand for GPT-5.6 may diverge: Sol for coding and deep research, Terra handling everyday agentic workflows, and Luna managing sub-agent scheduling.77% similar
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