Cursor
The AI Code Editor
5.0•768 reviews•35K followers
The AI Code Editor
5.0•768 reviews•35K followers
Built to make you extraordinarily productive, Cursor is the best way to code with AI.
This is the 8th launch from Cursor. View more
Composer 2 by Cursor
Launching today
Composer 2 by Cursor is a frontier-level coding model built for complex, long-horizon development tasks. It combines strong benchmark performance with highly efficient pricing ($0.50/M input, $2.50/M output). Powered by continued pretraining and reinforcement learning, it delivers smarter code generation with better cost-performance, plus a faster variant for real-time workflows.
Free Options
Launch Team
Windsurf
opencode
Claude Code
Composer 2 by @Cursor is a frontier-level coding model designed to solve complex, long-horizon programming tasks with high efficiency and strong benchmark performance.
It tackles the problem of limited coding accuracy and high costs in AI dev tools by combining improved intelligence with optimized pricing.
What makes it different is its continued pretraining + reinforcement learning on multi-step coding tasks, enabling it to handle hundreds of actions with better results across benchmarks like Terminal-Bench and SWE-bench Multilingual.
Key highlights:
Strong coding performance (61.7 on Terminal-Bench 2.0)
More cost-efficient ($0.50/M input, $2.50/M output)
Fast variant with same intelligence but quicker responses
Built for real-world, long-horizon dev workflows
Great for developers, teams, and builders working on complex codebases, automation, and AI-assisted programming. If you're building with AI, this is worth checking out!
P.S. Here's an interesting comparison between Composer 2 vs Opus 4.6 vs GPT 5.4 (unscientific). Composer 2 is 10× cheaper than Opus 4.6 and supposed to rival it.
P.P.S. I hunt the latest and greatest launches in tech, SaaS and AI, follow to be notified → @rohanrecommends
@rohanrecommends How does Composer 2's long-horizon reasoning via RL on multi-step tasks compare to Claude 4 Opus in real-world dev workflows like refactoring large codebases; any early user benchmarks or tips for switching?
@rohanrecommends The "long-horizon" claim is the one I keep testing with every coding model. In my experience the real failure mode isn't losing context across files, it's when the model starts making local decisions that are individually correct but globally inconsistent. Does Composer 2 do anything differently there, or is it still up to the developer to catch that drift?
Raycast
While Windsurf confuses their pricing model, Cursor keeps trucking with their own tech. Inspiring stuff.
@chrismessina Thanks for sharing the forum thread, Chris. I didn't know Windsurf was in a soup.
Is this a fine-tuned Kimi 2.5 model?
@mikestaub yes, that's the base they started from. @leerob clarified on X:
Source: Twitter/X
the token efficiency angle is interesting - most coding models optimize for correctness first and leave efficiency as an afterthought. curious what the tradeoffs look like in practice. do you find it handles multi-file refactors well or is that still where longer context wins?
The pricing is what gets me. $0.50/M input is wild for a model that's beating Opus 4.6 on coding benchmarks. Been burning through tokens on long refactors and this could cut my bill in half.
Curious how it handles multi-file edits across a full monorepo though. That's where I've seen most coding models start to lose context and make weird decisions. The "long-horizon" claim sounds promising but I'll believe it when I see it on a real 50-file refactor.
Just gave it a spin. Loving the speed and the cost efficiency, even if it still needs a lot of hand-holding. That's great for planning though, and to carry out simple tasks :) It will totally become my daily driver
That's fascinating. Cursor isn't just an app or AI model company; it's both. I think this dual identity is the biggest differentiator Cursor has among hundreds of coding agents and editors.