Unverified50% confidenceFactExact time
OpenAI uses an ordered set of code names to distinguish model tiers: Luna < Terra < Sol < Astra.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/29/2026
First Seen
Valid until: 1/27/2027
Sources
Related Entities
Related Claims
UnverifiedOpenAI's model matrix includes 6 Astra (frontier flagship), 6.1 Sol (high cost-efficiency), and Luna, all of which sit on the Pareto frontier of cost versus accuracy.76% similarUnverifiedOpenAI改变命名逻辑，数字标识代际，Sol、Terra、Luna标识持久的能力层级，每层可独立迭代75% similarUnverifiedOpenAI uses the semantic codenames "Sol" (sun) and "Luna" (moon) to differentiate between variants of the same model generation.74% similarUnverifiedOpenAI introduced the Decisions API, which allows the Luna model to respond within fractions of a second by predefining option sets, suitable for scenarios such as request routing and image classification.72% similarUnverifiedOpenAI has launched a three-tier product line consisting of the flagship Astra, the balanced Sol, and the lightweight Luna.69% similar
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