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Cursor Composer 2 is just Kimi K2.5 with RL

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Re: Cursor Composer 2 is just Kimi K2.5 with RL

#41

Post by bakugo »

lmc wrote: post #39
saidmukhamad wrote: post #30

Earlier quoted context omitted.

4th paragraph in license block Our only modification part is that, if the Software (or any derivative works thereof) is used for any of your commercial products or services that have more than 100 million monthly active users, or more than 20 million US dollars (or equivalent in other currencies) in monthly revenue, you shall prominently display "Kimi K2.5" on the user interface of such product or service.

That's not an open source license, then.

It wouldn't be regardless, because the model is open weights, not open source. It's just a license.

Re: Cursor Composer 2 is just Kimi K2.5 with RL

#43

Post by prodigycorp »

There are many reasons to make fun of Cursor. However, one of the things get right is their autocomplete model.

Are there any open models that come close? Why doesnt OAI or Anthropic dedicate some resources to blowing Cursor's model out of the water? Cursor's completion model is a sticking point for a lot of users.

Re: Cursor Composer 2 is just Kimi K2.5 with RL

#45

Post by ffsm8 »

saidmukhamad wrote: post #30
lmc wrote: post #21

Earlier quoted context omitted.

This is on their website... "Is Kimi K2.5 open source?" "Yes, Kimi K2.5 is an open source AI model. Developers and researchers can explore its architecture, build new solutions, and experiment openly. Model weights and code are publicly available on Hugging Face and the official GitHub repository." https://www.kimi.com/ai-models/kimi-k2-5

4th paragraph in license block Our only modification part is that, if the Software (or any derivative works thereof) is used for any of your commercial products or services that have more than 100 million monthly active users, or more than 20 million US dollars (or equivalent in other currencies) in monthly revenue, you shall prominently display "Kimi K2.5" on the user interface of such product or service.

My first reaction was "well, who knows how much revenue they're actually doing"

But at least the rumor mill has them significantly above that line:

> Revenue: As of March 2026, reports suggest Cursor has surpassed $2 billion in annualized revenue (ARR).

Re: Cursor Composer 2 is just Kimi K2.5 with RL

#46

Post by victorbjorklund »

pbowyer wrote: post #36
NitpickLawyer wrote: post #26

Earlier quoted context omitted.

> packaging open source and reselling it. It's a bit more than that. They have plenty of data to inform any finetunes they make. I don't know how much of a moat it will turn out to be in practice, but it's something. There's a reason every big provider made their own coding harness.

Can anyone enlighten me how having a coding harness when for most customers you say "we won't train on your code" helps you do RL? What's the data that they rely on? Is it the prompts and their responses?

I doubt the majority does that. I bet the majority is using the defaults.

Re: Cursor Composer 2 is just Kimi K2.5 with RL

#48

Post by kgeist »

justindotdev wrote: post #5

im pretty sure this is in violation of moonshot's ToS. this is going to be fun to watch unfold

At the same time, Moonshot violated Anthropic's ToS by training on their models' outputs :) [0]. And Anthropic violated copyright law by training on copyrighted material. It's violations all the way down.

https://news.ycombinator.com/item?id=47126614

Re: Cursor Composer 2 is just Kimi K2.5 with RL

#49

Post by olejorgenb »

prodigycorp wrote: post #43

There are many reasons to make fun of Cursor. However , one of the things get right is their autocomplete model. Are there any open models that come close? Why doesnt OAI or Anthropic dedicate some resources to blowing Cursor's model out of the water? Cursor's completion model is a sticking point for a lot of users.

The model is great. The UX is ~~horrible~~ annoying...
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