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OpenAI Launches GPT-5.6: Sol, Terra, and Luna Model Family Arrives After US Government Review

OpenAI releases GPT-5.6, its most advanced model family comprising Sol, Terra, and Luna variants, after a weeks-long US government cybersecurity review. GPT-5.6 Sol leads on reasoning benchmarks while Terra and Luna offer optimized cost-performance tiers.

Saturday July 11, 2026
OpenAI Launches GPT-5.6: Sol, Terra, and Luna Model Family Arrives After US Government Review

Summary

OpenAI releases GPT-5.6, its most advanced model family comprising Sol, Terra, and Luna variants, after a weeks-long US government cybersecurity review. GPT-5.6 Sol leads on reasoning benchmarks while Terra and Luna offer optimized cost-performance tiers.

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Q: What is this story about? A: OpenAI releases GPT-5.6, its most advanced model family comprising Sol, Terra, and Luna variants, after a weeks-long US government cybersecurity review. GPT-5.6 Sol leads on reasoning benchmarks while…

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