Claude Opus 5 is out today. Our engineers have been testing it across client work, code, design, PM, and writing - and Slack has been talkative. Overheard in the Ode with Anthropic Slack 🧵
Claude
@claudeai
Jul 24
Introducing Claude Opus 5. It's a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.
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"I found it to be smarter than Opus 4.8 (sometimes as smart as Fable) and better to talk to than both." — Hugh, engineer
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"I put Opus 5 in a Slack thread with my Opus 4.8 agent to work the same CI failure. Opus 5 found the real cause, at which point, the older model admitted: 'It out-diagnosed me — the fix is simpler and more correct than anything I proposed.'" — Igor, engineer
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"First time I've read model-drafted follow-up emails and thought: I could basically send these as-is. Fewer AI-isms, and on deep research it shows receipts - quotes, links, the actual artifacts it read - instead of summarizing everything and losing the thread." — Neil, commercial
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"Claude Tag's check-ins using Opus 5 are finally brief enough that I could steer a long-running analysis kicked off Friday with brief touch-points from my phone - one day while making breakfast for my kids - so I was ready to go on Monday morning." — Lauren, engineer
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"I asked Opus 5 for a Datadog dashboard. The integration didn't exist, so it opened a browser and built the dashboard through the UI itself. I'm already doing most of my work with it instead of Opus 4.8." — Youssef, engineer
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"Opus 5 seems like a nice daily driver for PM-related tasks - I've been using it to synthesize client transcripts into sections of a PRD. Would use over 4.8." — Andy, product

Jul 24, 2026 · 7:36 PM UTC

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"Opus 5 feels both proactive and compliant somehow. I asked it to skip a suggested fix - it did, but at the end pointed out where the fix could still have helped. On complex multi-directional problems, every sentence of output seems to be relevant and useful." — Igor, engineer
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"Opus 5 took a problem I’d worked on for years and immediately found a more elegant approach. Then, in the same conversation it combined expert-level linguistics and mathematics to produce a research-grade model of language development." — Hugh, engineer
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Needless to say, Opus 5 has impressed the @OdeDevs It feels purpose-built for Claude Tag: it can search thousands of pages at once, but deliver an answer that’s still "concise, smart, and to the point". We’re excited to continue putting it to work and pushing what it can do.
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