Model
GPT 5.6 Lunar
A model version within the OpenAI GPT-5 series. Its specific positioning is unclear, and it is mentioned as a candidate model in this context.
Timeline (last 90 days)
Oct 14
The developer had Copilot recommend models based on the acceptance criteria in the requirements document, and Copilot, comprehensively considering retirement dates, capabilities, task fit and subscription quotas, recommended GPT 5.4 Mini, GPT 5.6 Lunar and GPT 5.4 Nano.
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