Comparison of Anthropic and OpenAI code models between July and September 2026: in July Anthropic performed better, but the difference was small and it was expensive with subscriptions appearing limited ($200). By September Opus 5.5 had become fast, cheap, and reliable, significantly improving the usability of the $200 and $500 subscriptions.
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Comparison of Anthropic and OpenAI Code Models: Advantages of Opus 5.5
Comparison of Anthropic and OpenAI code models between July and September 2026: in July Anthropic performed better, but the difference was small and it was expensive with subscriptions appearing limited ($200).
