Claude Opus 5 is out today, and Lovable is one of the first platforms to ship it. Anthropic's new flagship Opus model delivers what the team calls a "step change" for the tier: near-Fable-5 intelligence at exactly half the price, with the strongest coding and knowledge-work scores the company has ever measured on a generally available model.
Anthropic released Claude Opus 5, positioning it as the new default model for most users and pitching it as nearly matching the capability of its top-tier Fable 5 model at half the price. It's the fourth model the company has shipped in under two months, following Mythos 5, Fable 5, and Sonnet 5 in June, an unusually rapid release cadence even by AI industry standards.
The squeeze that made Opus 5 necessary
The Opus tier had been caught in an awkward spot. Sonnet 5 arrived at the end of June performing close to Opus 4.8 at a fraction of the cost, while Fable and Mythos sat above it. Enterprises on Max, Team, and Enterprise plans needed somewhere to go that wasn't Mythos-class pricing. Opus 5 is that answer.
It's a thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price. Claude Opus 5 provides greatly improved performance for the same cost as its predecessor, Opus 4.8. That's the headline: more capability, no price increase.
What the benchmarks actually show
On coding and knowledge work evaluations like Frontier-Bench and GDPval-AA, Opus 5 is the new state-of-the-art, though it remains behind Mythos 5 on cybersecurity tasks. The numbers are striking across the board:
- Frontier-Bench v0.1: Opus 5 surpasses all other models and more than doubles Opus 4.8's performance at a lower cost per task.
- CursorBench 3.2: At max effort, Opus 5 performs within 0.5% of Fable 5's peak score at half the cost per task.
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