Forget threejs demos, Opus 5.5 is *incredible* at building apps.
This is Letters Abroad, a language-learning app I'm working on. You exchange letters with an AI pen pal, and learn a language through context (plus some brain science magic).
t.co/9ZP7vm0Ywp (also built by Opus, of course)
I've been tinkering with this the last week. I built a prototype with Astra, but wasn't happy with the design. Tried Fable, still wasn't good enough. Then Opus 5.5 dropped. In a few hours, I've made more progress on the visuals than in a week of burning tokens.
This model is insane. It reads my mind and nails it every time. All the gorgeous 3D models and fluid transitions are thanks to Opus. Crazy idea, prompt, repeat. No more quota anxiety, just non-stop flow state.
I'll be writing about my prompts/skills/learnings from building this. Lots to share; this generation of models is absolutely game-changing for design!
Learning
A language app where you swap letters with an AI pen pal
Anshu, a former YC founder who worked on design at Apple, is building Letters Abroad, where you pick up a language by exchanging letters with an AI pen pal. The 3D models and transitions came from Opus 5.5, after prototypes with Astra and Fable fell short.
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- Role
- Former YC founder, previously UI/UX and AI at Apple
- Links
- lettersabroad.app
- Posted
