#GPT-5.5 の記事
2 記事
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Claude
OpenAI vs Claude Opus | GPT-5.5 and 4.8 Performance & Pricing Comparison
A comparison of OpenAI GPT-5.5 and Claude Opus 4.8 across pricing, benchmarks, agent capabilities, and context length. Based on official information as of June 2026, this guide covers the latest flagship showdown and how to choose between them by use case.
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Claude
OpenAI and Claude Mythos | Competitor Daybreak and Performance Comparison
Clarifying the search query 'openai claude mythos.' OpenAI is not a Project Glasswing partner but a competitor that announced Daybreak as a rival model. We explain the UK AISI benchmark comparison between GPT-5.5 and Claude Mythos, the Erdős problem, and the unofficial OpenMythos project — all backed by primary sources.