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I’ve used Cursor’s Composer—it’s legitimately good. Easily on par with Sonnet 4/4.5 and very fast. Makes me wonder if there’s any moat left for frontier model builders, and might explain why they’re trying to set $1.4T on fire. cursor.com/blog/composer

cursor.comComposer: Building a fast frontier model with RL · CursorBuilt to make you extraordinarily productive, Cursor is the best way to code with AI.

Todd Geist

@toddgeist.me

Cursor spent 2 years using Anthropic and OpenAI models, collected massive amounts of data and use cases, then trained their own frontier-level model and cut both out entirely. How is this not the playbook every AI application builder will follow?

2/11/25, 11:55 pm0 reposts0 likes

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