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Every Claude Opus 5.5 article on AIPress — analysis, explainers and comparisons.
September 22, 2026 gave developers three new models to price out on the same afternoon: OpenAI's GPT-6 Sol and GPT-6 Luna and Anthropic's Claude Opus 5.5, all of them cheaper in some meaningful sense than the tiers they relate to, and all of them aimed at different parts of the workload spectrum. S…
Anthropic launched Claude Opus 5.5 on September 22, 2026 — the first model in a new Claude 5.5 family and the company's most advanced model to date by its own account — and the headline claim is unusually double-edged for a flagship release. Opus 5.5 performs at the level of Claude Fable 5.1 for mo…
Two frontier labs dropped new models on the same calendar day, and the releases shared a theme that is hard to ignore: the next move in frontier AI is not a bigger number on a benchmark — it is cheaper, more accessible, and pointed at a wider slice of users and developers. OpenAI launched GPT-6 Sol…
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