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Chronicles

The story behind the story

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Cursor launches Composer 2, an AI agent trained solely on coding-related data to perform autonomous, lengthy coding tasks, to compete with Anthropic and OpenAI

Rachel Metz /Bloomberg:NEW

Bloomberg Rachel Metz

Discussion

  • @natolambert Nathan Lambert on x
    Open weight base models + incredible ML teams in a specific niche can create immense value. Congrats to all my friends on the cursor research team! (they said they did continued pretraining to enable effective scaled RL, super fun)
  • @kentcdodds Kent C. Dodds on x
    I've been using this model for a while and while it's not quite as good as GPT 5.4, it's much faster and cheaper
  • @kr0der Anthony on x
    Composer 2 just dropped in Cursor - i got early access for a few days and here are my first impressions: - it's very very fast so it feels amazing for sync coding or potentially as a daily driver - i've been using it for “flow-state coding” alongside Cursor Tab which has been
  • @agrimsingh Agrim Singh on x
    got to test drive composer the last couple days and, man, performance vs cost is unmatched here.
  • @nettofarah Netto Farah on x
    Composer 2 has been my daily driver for the past few weeks. It took a lot of self control to not post about how much I love using it for work. Give it a try, you won't regret it. Your wallet will thank you too.
  • @ericzakariasson Eric Zakariasson on x
    go try composer 2 in cursor, its a good model [image]
  • @ellev3n11 Federico Cassano on x
    a lot went into this model. it was fun! i hope people enjoy it.
  • @wesbos Wes Bos on x
    Cursor just launched Composer 2 - their own model. It's 10× cheaper than Opus 4.6 and supposed to rival it. I've been using it for a few days, I don't have any skewed graphs to show you but from a pure vibes POV I can tell you it's pretty good™ My litmus test right now is if [ima…
  • @cursor_ai @cursor_ai on x
    We were able to significantly improve the model quality and cost to serve. These quality improvements come from our first continued pretraining run, providing a far stronger base to scale our reinforcement learning. [image]
  • @cursor_ai @cursor_ai on x
    Composer 2 is now available in Cursor. [image]
  • @cursor_ai @cursor_ai on x
    It's frontier-level at coding, priced at: - Standard: $0.50/M input and $2.50/M output - Fast: $1.50/M input and $7.50/M output [image]
  • @dejavucoder Sankalp on x
    composer 2 is here beats opus 4.6 in terminal bench 2.0 input 0.5/M, 2.5/M output there's a faster variant too which has 3x price than normal variant. [image]
  • @synthwavedd Leo on x
    Cursor have released Composer 2, a frontier-level coding model with higher token efficiency, and a faster default variant Looks like the rumor going around about it beating Opus 4.6 was in regard to Terminal-Bench 2.0, the only benchmark score they released aside from their own […
  • @natolambert Nathan Lambert on bluesky
    Cursor released their next in house model  —  Open weight base models + incredible ML teams in a specific niche can create immense value.  Congrats to all my friends on the cursor research team!  —  They said they did continued pretraining to enable effective scaled RL, fun  —  c…
  • @mntruell Michael Truell on x
    Composer 2 is out! Cursor is an example of a new type of company, not a pure app maker and not a model provider. Our aim is to build the most useful coding agents by combining the best API models and our domain-specific models.