Originally published on AI Tech Connect.
What you need to know Opus 5 shipped on 24 July 2026 — Anthropic's fourth model release in under two months, after Fable 5, Mythos 5 and Sonnet 5. It narrowly leads on intelligence. Artificial Analysis puts Opus 5 (maximum effort) at 61 on its Intelligence Index — effectively tied with Fable 5 (60) and just ahead of GPT-5.6 Sol (59). It tops the Agentic Index at 55.3, according to Artificial Analysis — the number that matters most if you are shipping agents rather than chat. Pricing is $5/$25 per 1M tokens input/output — the same rate as Opus 4.8, and roughly half Fable 5's $10/$50 per Anthropic's published pricing. The context window is 1M tokens, matching Opus 4.8, with up to 128k output tokens. Sonnet 5 stays the cheaper Claude Code default — Opus 5 is the reach-for-it option, not the…
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