A user reported that OpenAI's Codex 5.6 Sol significantly outperformed Anthropic's Opus 4.8 and Fable 5 on a complex product issue, solving it in two hours while Anthropic's models struggled for weeks. The user expressed disappointment with Anthropic's latest frontier models, citing perceived unreliability and performance limitations, possibly due to compute constraints and heavy quantization. This experience led the user to cancel their Anthropic subscription and praise OpenAI for its competitive offering. AI
IMPACT Highlights potential performance gaps between leading AI models, influencing user adoption and competition.
RANK_REASON User comparison of two AI models, not a direct release from a frontier lab.
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