The Claude Opus 5 release by Anthropic arrived on July 24, 2026, and it puts near-frontier intelligence on the same bill you were paying for Opus 4.8. Anthropic pitches the model as one you reach for every day. It comes close to the intelligence of Claude Fable 5, the company’s top public model, at roughly half the price, and it is now the default on Claude Max and the strongest option on Claude Pro. Think of it as the quick, capable sedan you drive daily rather than the race car you book for one hard lap. Cost sits at the center of the Claude Opus 5 release by Anthropic, and the Claude Opus 5 pricing is the surprise.
Standard use runs $5 per million input tokens and $25 per million output tokens, the same rate as Opus 4.8 and half of Fable 5’s rate. A Fast mode runs about 2.5 times quicker at double the price. The headline feature is the Claude Opus 5 effort setting, a dial you turn per request. Set it low for routine calls and save tokens. Push it high when a problem needs full depth. Anthropic says the model holds quality at lower effort while spending fewer tokens than before, so your real bill can fall even as the price holds steady.
Claude Opus 5 vs Fable 5 on the benchmarks
The Claude Opus 5 release by Anthropic leans on value rather than raw peak scores. On the Claude Opus 5 benchmarks the company published, the model tops its own lineup on Frontier-Bench and GDPval-AA, though it still trails Mythos 5, the restricted top model, on cybersecurity work. The Claude Opus 5 vs Fable 5 comparison is where the case lands. On CursorBench 3.2 at max effort, Opus 5 comes within 0.5 percent of Fable 5’s peak at half the cost per task. ARC-AGI 3, a test of fresh problem-solving, shows a wider gap, with its score running three times the next-best model. For computer use, OSWorld 2.0 has it beating Fable 5’s best result at a third of the cost. Anthropic also reports lab gains, with organic chemistry scores 10.2 points above Opus 4.8 and protein-function predictions 7.7 points higher.
Where Claude Opus 5 coding pulls ahead
The clearest sign of progress turns up in Claude Opus 5 coding tests, where the model checks its own work and keeps going until it clears the task. Anthropic shares one Frontier-Bench job where it got a drawing of a machine part but no way to view it directly. Opus 5 wrote its own computer vision pipeline to read the geometry from raw pixels, then rebuilt the part. No rival model with the same setup solved it across five tries. Handed a real bug in a popular package manager, it traced the root cause and fixed an edge case the community patch had missed.
One engineer at a trading firm used it to build a market data feed for a new exchange in a single sitting, and with no live feed to test against, the model wrote its own test harness to confirm it read the data correctly. The Claude Opus 5 release by Anthropic also brought two beta features, letting developers switch tools mid-conversation without breaking the prompt cache and routing flagged API requests to another model instead of failing. This is the company’s fourth model in under two months, after Mythos 5, Fable 5, and Sonnet 5. If you have wanted a model you can run all day without watching the meter, Opus 5 is built for exactly that.
