🔥The 9th Round of Easy Loan, Earn $40 Reward is in progress❗️ ⏰ Promotion Period: January 15th - Feburary 15th, 2025 👉 Register now and check more details at gate.io/campaigns/358

After many months of development, LMArena has transitioned to a new user experience. It's way better, check it out, and congrats to the team that made it possible. :)

Super excited to share the NEW LMArena is now live. Huge shoutout to the team for all the hard work! Check it out and let us know your feedback.

Arena is building one of the most valuable data assets in AI: a real-time, community-driven record of how models perform in the wild. This ground-level signal has quickly become an indispensible ingredient to how frontier labs improve their products. Lightspeed is thrilled

Breaking: Claude Opus 4 jumps to #1 in WebDev Arena! A strong comeback from Anthropic - Opus 4 and Sonnet 4 now on top of the chart, surpassing previous Claude 3.7 and matching Gemini 2.5 Pro. Massive congrats to Anthropic🔥

I gave an in-depth tutorial on "Formal Verification and Control with Conformal Prediction" at KTH today 🚀 Since I got positive feedback, I wanted to share the presentation, in the hope that others can also benefit from it 🙂 Find the recording here: youtu.be/kfPBjaMCXmM?si…

DeepSeek R1-0528 has landed in the Arena! 🐳 Rumblings say this version has major improvements in reasoning and output, but let's see what you think.🫵 Congrats to the DeepSeek team on this release update 👏

Proud to support Anastasios Nikolas Angelopoulos, Wei-Lin Chiang , and Ion Stoica as lmarena.ai lays the groundwork for a more rigorous and accountable AI ecosystem. newblog.lmarena.ai/new-lmarena/

Welcome to the Image Arena: FLUX.1 Kontext! 🖼️ 🎨 You'll find that FLUX.1 Kontext Pro can generate AND edit images. Congrats to Black Forest Labs on this exciting release. 🌲👏🌲 Check it out in the Arena, and get voting!

Exciting update today: Anthropic’s Claude 4 Opus jumps into the Top 4🔥 Claude Opus 4 ranks #4 overall (text) ↳ Tied #1🏆 in Coding, Hard Prompts, Writing, Longer Query ↳ Tied #1🏆 in WebDev Arena Claude Sonnet 4 hits #7 overall (text) ↳ #2 in Coding, #1 in Longer Query

With Francesco Orabona, We propose a new algorithm for constructing confidence intervals for means of bounded r.vs using "testing by betting" framework. It performs remarkably well even in the challenging, very small sample regime. (and of course, it is great in the large sample one)

Image Editing just got real on LMArena 🖼️✨ Introducing Image Edit Arena: where AI editing models go head-to-head on your images. Upload, edit, vote. It's that simple. Who edits it best? You decide🫵 Learn how it works in thread 🧵

Exciting news: OpenAI’s GPT-Image-1 takes the #1 spot in the Text-to-Image Arena! 🖼️🏆 ➤ Outperforms Google’s Imagen-3.0 by 50+ points ➤ Major leap over DALL·E 3 Huge congrats to OpenAI! 👏

Hello friends, at lmarena.ai we're on the lookout for designers who are obsessed with craft, comfortable with complexity and have a track record of creating interfaces people love. If you're interested in helping us mold this product and brand into something special, send me a

🚨Breaking: New Gemini-2.5-Pro (06-05) takes the #1 spot across all Arenas again! 🥇 #1 in Text, Vision, WebDev 🥇 #1 in Hard, Coding, Math, Creative, Multi-turn, Instruction Following, and Long Queries categories Huge congrats Google DeepMind!

We asked Anastasios Nikolas Angelopoulos about the thesis behind LMArena. "Benchmarking is entering a new age. The way people are using AI is so broad that you could never annotate all of it with datasets." "There's like 1M different things that you should be evaluating. Not just image

Search-augmented LLMs 🌐 are changing how people ask, judge, and trust. We dropped 24k+ real human battles ⚔️ across top models. Wanna know what people actually ask and what they want in return? Check out the paper + dataset 👇

Very happy to announce that our work on Conformal Object Detection with Sequential Conformal Risk Control (able to control risks of multiple parameters!) is now available on ArXiv at: arxiv.org/abs/2505.24038