{"slug": "opus-5-is-a-really-bad-model", "title": "\"Opus 5 is a really bad model\"", "summary": "A user who previously preferred GPT over Claude criticizes Anthropic's Opus 5 model as 'awful' and a 'slop-cannon,' claiming it fails to deliver on explicit goals, makes bad decisions and large mistakes, and wastes tokens by chasing irrelevant engineering concerns.", "body_md": "- i feel like i’m being lied to here. i’ve been the biggest gpt > claude guy. but sol is pathetic. it makes every task into a token chugging monster and fails to deliver on my explicit goal, instead chasing random engineering concerns outside of the scope.\n- its /awful/, Opus-5 makes me feel like setting my hair on fire out of frustration. it's annoying to work with for high tasks: it constantly makes bad decisions and large mistakes so any token-usage you saved by not using Fable instead is useless/worse. It's a slop-cannon.\n# Join the conversation", "url": "https://wpnews.pro/news/opus-5-is-a-really-bad-model", "canonical_source": "https://twitter.com/HarukaKunori/status/2081697911847481502", "published_at": "2026-07-28 04:03:10+00:00", "updated_at": "2026-07-28 04:22:24.976304+00:00", "lang": "en", "topics": ["large-language-models", "ai-products"], "entities": ["Anthropic", "Opus 5", "GPT", "Claude", "Fable"], "alternates": {"html": "https://wpnews.pro/news/opus-5-is-a-really-bad-model", "markdown": "https://wpnews.pro/news/opus-5-is-a-really-bad-model.md", "text": "https://wpnews.pro/news/opus-5-is-a-really-bad-model.txt", "jsonld": "https://wpnews.pro/news/opus-5-is-a-really-bad-model.jsonld"}}