2026年9月23日 · 9 min read · English · AI updates
AI model releases September 2026: everything that shipped, including Claude Opus 5.5 and GPT-6 Sol
Every major AI model released in September 2026, including Claude Opus 5.5 and Sonnet 5.5, GPT-6.1 Sol, GPT-6 Sol and Luna, Claude Fable 5.1, GPT-6 Astra, Grok 4.7 and DeepSeek V4.1 Flash, with dates, prices and one official source per row. Plus Gemini 4 Argon, announced but not on sale, and what retires next.
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