GPT Models
GPT-5.6 Sol / Terra / Luna model selection and comparison, covering o-series reasoning, GPT-Realtime-2.1 voice, and GPT Image 2.
This channel tracks the OpenAI flagship model family — how to pick between the current GPT-5.6 Sol / Terra / Luna tiers by workload, and how to integrate the companion o-series reasoning models, the GPT-Realtime-2.1 voice family, and the GPT Image 2 image family. Every model list and release date stays in sync with the official changelog.
GPT-5.6 SolGPT-5.6 TerraGPT-5.6 Lunao-series reasoningResponses API selectionModel migration paths
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