Letters Abroad — AI Language Pen Pal

Anshu

@anshuc · 17.1K followers

• Warm editorial design with scattered travel postcards and handwritten typography that actually feels like receiving a letter
• Context-first language learning: the AI pen pal identifies gaps as you write, no flashcards or drills
• Built in hours with Opus 5.5 after a week of failed attempts with other models — creator credits the model for nailing the visual design every time

“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). http://lettersabroad.app (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!”