Opus 5.5 is way, way, way better than Opus 5. Sorry about that model, please try this one.↗

Opus 5 (or Opus 5.5) built a scroll site for a heavy transport company with some great animations in oneshot! Took one prompt and I took some inspo from the website unitedcarriers dot com if you wanna check it out: axis-haul.vercel.app↗

Fable 5.1 + Opus 5↗

I got 96.2% on ARC-AGI-3 with Opus 5, and 99.3% pass@2. The program is basically Claude Code + Opus 5 (high), one action command, and filesystem logs. Almost nothing ARC specific. github.com/jerber/arc-code↗

I gave Opus 5 a dataset of every certified running streak (including my own) and told it to use D3 to make a striking data visualization. It made an interactive global map, lifespan running graph, start/end date analysis, and much more. Incredible. (approach and links below)↗

Introducing Modern Claudefare Built fully with Opus 5 on High Mode over a few days using principles from @mattshumer_’s Gauntlet Loop - 84,100 lines of code Includes remakes of 4 beloved maps: 0:00 - Rust 0:40 - Highrise 0:57 - Nuketown 1:26 - Terminal Solo & multiplayer (w/ v…↗

My Opus 5 video is late, but that ended up being good because I would have made a very different video on release day I really like the idea of this model, but actually using it kinda sucks...↗

Thought I'd try getting Opus 5 to build a Kart racing game after seeing what @mattshumer_ did. Still drops some frames but this is amazing what was competed just yesterday! Everything drawn from scratch programmatically with @threejs in the browser. Try it out here: …↗

I've already had to update the guide to which AI models to use that I wrote on Thursday to include Opus 5 and Codex's voice mode, both of which are significant & launched on Friday. Keeping up is challenging, even if you are following this stuff closely. …↗

Opus 5 just built a fully functional Plug and Play style game in under 30 minutes. It's ability to verify its own outputs and build a fully functional game is INSANE↗

BIG NEWS: Opus 5 is here...and I *hate* working with it. And yet in a blind taste test, I ranked it above every other model (even Fable and my beloved GPT-5.6) What I cover in my day 0 review: 00:00 Why I have model fatigue 03:15 First impressions 06:12 Opus 5's neurotic perso…↗

How are we feeling about Opus 5 so far?↗