Inaugurating new acct to share work from my PhD student!

Wayne et al have been running a live eval platform Copilot Arena - a VSCode extension serving code completions from AI systems to real developers. See 🧵 for findings and preprint

Excited to be evaluating human-AI *workflows* holistically!

Interested in trying out Copilot Arena for yourself?
Download at lmarena.ai/copilot.
Follow for more updates!

Full Paper with additional analyses: arxiv.org/abs/2502.09328
Code: github.com/lmarena/copi...

w/ Valerie Chen, Anastasios Nikolas Angelopoulos, Wei-Lin Chiang, Aditya Mittal, Naman Jain, Tianjun Zhang, Ion Stoica, @chrisdonahue.com , @atalwalkar.bsky.social

Our paper analyzes human preferences across 10 SOTA coding models, but we continue to add more models to the live Copilot Arena leaderboard on lmarena.ai!

Different data slices affect user preferences disproportionally. There is a drastic difference in relative model performance between real-world tasks such as frontend or backend development versus leetcode style coding challenges but little difference between programming languages.

We attribute these differences to a significant shift in our data distribution. Compared to previous benchmarks, Copilot Arena observes more programming languages (PL), natural languages (NL), longer context lengths, multiple task types, and various code structures.

Our leaderboard differs from existing evaluations. In particular, smaller models over perform in static benchmarks compared to real development workflows.

We evaluate models in a developer's IDE by presenting pairs of code completions generated by two different models. This workflow evaluates human preferences across models with real users and tasks in their native environment.

What do developers 𝘳𝘦𝘢𝘭𝘭𝘺 think of AI coding assistants?

In October, we launched Copilot Arena to collect user preferences on real dev workflows. After months of live service, we’re here to share our findings in our recent preprint.

Here's what we have learned /🧵

Got to test out InceptionAILab's newest model, Mercury Coder Mini, on Copilot Arena!

Mercury Coder Mini is blazing fast and overtakes Codestral as the fastest coding model out there (0.24s end-to-end latency) while boasting similar performance (joint #2).

Congrats to InceptionAILabs! 📸

I had the same problem. I only use cursor for newer, small projects. I use Copilot Arena's edit feature for projects in VSCode (but obviously I'm biased)

Deepseek v3 (FiM) is now available in Copilot Arena for free!

Download at lmarena.ai/copilot

These lists are better than most "2024's best games" lists

Copilot Arena's leaderboard is now live on lmarena.ai/leaderboard!

We've collected over 15k votes on 11 models (2 new models since our last blogpost release). Congrats @deepseek.bsky.social🥇and @anthropic.com🥇!

I'm not physically at NeurIPS, but my good friend
@naveenraman.bsky.social will be presenting in my stead.

In this work, we found that UI element ordering significantly affected GUI agent performance. Come check out the poster (and quiz Naveen) at the Workshop on Open-World Agents (OWA-2024)!

Bruh what... 💀

We've open sourced CopilotArena’s server code!

Check out how we handle code completions and share your ideas for new system prompts!

Github:
github.com/lmarena/copi...
Technical details in the blog: blog.lmarena.ai/blog/2024/co...

Download Copilot now at: lmarena.ai/copilot

Trying out Bluesky. Will mostly be posting about Copilot Arena!