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Opus 5.5 vs. GPT-6 Sol: which model won my blind taste test?

Watch now (39 mins) | 🎙️ I ran blind evaluations across writing, frontend prototypes, long-running agentic tasks, SVGs, coding, and video editing, then put Opus 5.5 through Barbie Bench
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4 Articles

Here's how ChatGPT-6 and Claude Opus 5.5 deal with five complex problems and where the difference emerges. 5 prompt pets test their abilities.

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The race to develop the most powerful artificial intelligence has just added a new chapter with two practically simultaneous releases yesterday. OpenAI has introduced GPT-6 Sol, a model designed to bring the capabilities of its GPT-6 generation closer to a much lower cost, while Anthropic has just put on the table Claude Opus 5.5, its new reference model. Both come with the promise of making complex tasks faster and cheaper, but their characteri…

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lennysnewsletter.com broke the news on Tuesday, September 22, 2026.
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