GPT-6 Sol disappoints, Luna surprises, Opus 5.5 wins one user back

Layton Gott @Layton_GottOriginally posted 2026.09.23

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I'm VERY disappointed in GPT-6 Sol. I'm VERY pleased with GPT-6 Luna. But Opus 5.5 genuinely makes no sense to me... Opus 5 was such a bad experience that I cancelled Anthropic entirely. Now I've been using Opus 5.5 on High for 5 straight hours today... and I've only used 8% of my WEEKLY limit. Not to mention the model itself feels WAY better. I genuinely don't understand how Anthropic turned Opus around this hard in one release. Sol disappointed me. Luna surprised me. Opus 5.5 won me back.