Verified70% confidenceFactExact time
OpenAI officially stated that GPT-6 Sol and Luna share the same lineage as the previously released Astra series.
4
Sources
70%
Confidence
Medium-term (~90 days)
Relevance
9/22/2026
First Seen
Valid until: 12/21/2026
Sources
Related Entities
Related Claims
UnverifiedOpenAI officially claims that GPT-4.1 Sol is smarter than Astra in certain respects.77% similarUnverifiedIn the GPT-5.6 Codex evaluation, three different model tier configurations—Sol, Terra, and Luna—were set up.75% similarVerifiedGPT-5.6, codenamed 'Sol,' will be launched to the public simultaneously with two companion products, Terra and Luna.74% similarVerifiedGPT-5.6 is no longer a single model but has been split into three tiers: Sol, Tera, and Luna.74% similarVerifiedAfter ending the limited partner preview on July 9, OpenAI officially released the GPT-5.6 family to the public, comprising three models: Sol, Terra, and Luna.74% similar
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