{"slug": "claude-ais-opus-5-responses-grow-longer-and-more-structurally-complex-compared-5", "title": "Claude AI’s Opus 5 responses grow longer and more structurally complex compared to Fable 5", "summary": "Anthropic released Claude Opus 5 on July 24, 2026, with responses significantly longer and more structurally complex than its predecessor Opus 4.8, while Fable 5, the premium-tier model, remains concise. Opus 5 maintains the same API rate as Opus 4.8 at $5 per million input tokens and $25 per million output tokens, roughly half the cost of Fable 5, and now serves as the default model on Claude Max and the strongest model on Claude Pro.", "body_md": "Via tomshardware.com\n\n# Claude AI’s Opus 5 responses grow longer and more structurally complex compared to Fable 5\n\nAnthropic's latest flagship model delivers near-Fable 5 performance at half the cost, but its verbosity is turning heads for different reasons\n\nAnthropic released Claude Opus 5 on July 24, 2026, and users immediately noticed something: it talks a lot more than its predecessor. Responses from the new model are significantly longer, more detailed, and more structurally complex than what Opus 4.8 produced. Meanwhile, Fable 5, the company’s premium-tier model released earlier this year, keeps things tight and occasionally throws in a compliment for good measure.\n\n## What Opus 5 actually brings to the table\n\nThe new model ships with a 1 million token context window and a maximum output token capacity of 128,000 tokens. On the pricing front, Anthropic kept things simple. Opus 5 maintains the same API rate as Opus 4.8: $5 per million input tokens and $25 per million output tokens. That’s roughly half what Fable 5 costs, while delivering performance that closely rivals the top-tier model.\n\nOpus 5 now serves as the default model on Claude Max and stands as the strongest model available on Claude Pro. It also comes with a Fast mode option for users who need quicker turnaround. The model’s tendency toward verbosity means users must explicitly prompt for brevity, a notable behavioral shift from Opus 4.8.\n\n## Fable 5: the quiet counterpart\n\nUsers have described Fable 5’s style as carrying a “quiet confidence,” delivering concise responses that often include praise or validation alongside the actual answer.\n\nOne tension to monitor: verbosity has costs, both literal and practical. Longer responses mean more output tokens consumed, which means higher bills for API users even at the same per-token price. Anthropic’s decision to require explicit prompting for conciseness puts the burden on users to manage that tradeoff.\n\n**Disclosure:** This article was edited by Editorial Team. For more information on how we create and review content, see our\n\n[Editorial Policy](https://cryptobriefing.com/editorial-policy/).", "url": "https://wpnews.pro/news/claude-ais-opus-5-responses-grow-longer-and-more-structurally-complex-compared-5", "canonical_source": "https://cryptobriefing.com/claude-opus-5-longer-responses-structural-complexity/", "published_at": "2026-08-12 19:06:23+00:00", "updated_at": "2026-08-12 19:23:51.255085+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-products"], "entities": ["Anthropic", "Claude Opus 5", "Opus 4.8", "Fable 5", "Claude Max", "Claude Pro"], "alternates": {"html": "https://wpnews.pro/news/claude-ais-opus-5-responses-grow-longer-and-more-structurally-complex-compared-5", "markdown": "https://wpnews.pro/news/claude-ais-opus-5-responses-grow-longer-and-more-structurally-complex-compared-5.md", "text": "https://wpnews.pro/news/claude-ais-opus-5-responses-grow-longer-and-more-structurally-complex-compared-5.txt", "jsonld": "https://wpnews.pro/news/claude-ais-opus-5-responses-grow-longer-and-more-structurally-complex-compared-5.jsonld"}}