Hey folks, Opus 5.5 from Claude simply destroys any currently existing GPT model

A user, deeply integrated with the OpenAI ecosystem since ChatGPT's launch and an early adopter of Codex and Claude Code, claims that Opus 5.5 from Claude significantly outperforms all current GPT models. This individual, who has extensively tested various Claude and GPT models and regularly uses Zcode with GLM 5.3 and DeepSeek Harness with DS4F 4.1, expresses anticipation for future OpenAI developments despite their strong endorsement of Opus 5.5.

This user, unlike many who only test one model, has extensively used and compared Opus 5.5 against a wide array of GPT, Zcode, and DeepSeek models.