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Joey Gonzalez
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Joey Gonzalez
@profjoeyg
Professor @UCBerkeley and co-founder/advisor @RunLLM, @Inferact, @Letta_AI, and @genmoai
Berkeley, CA
eecs.berkeley.edu/~jegonzal
Joined June 2011
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  • user avatar
    Joey Gonzalez
    @profjoeyg
    Oct 22, 2021
    I am very excited to announce that my research group just received tenure @UCBerkeley. Alright, technically I received tenure, but I could not have done this without the hard work of my amazing team of students and colleagues. Queue awards music (1/4)
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Oct 23, 2024
    My former students @genmoai just crushed OpenAI with their new video generation model AND they are open-sourcing it! As an advisor to @genmoai I have to ask WHY ARE YOU GIVING THIS MODEL AWAY?! 😂
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    Genmo
    @genmoai
    Oct 22, 2024
    Introducing Mochi 1 preview. A new SOTA in open-source video generation. Apache 2.0. magnet:?xt=urn:btih:441da1af7a16bcaa4f556964f8028d7113d21cbb&dn=weights&tr=udp://tracker.opentrackr.org:1337/announce
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    00:00
    73K073K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Oct 16, 2025
    Replying to @zarazhangrui
    We are updating the Machine Learning courses at UC Berkeley (eecs189.org/fa25/). That said, the field is changing faster than we can update the curriculum and so the real goal in higher education is (and has always been) helping students learn how to learn quickly and adapt
    eecs189.org
    Home / Schedule
    A week-to-week description of the content covered in the course.
    84K084K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Jun 20, 2023
    Serving LLMs? My students found a way to accelerate serving by over an order-of-magnitude just by changing the way memory is managed (spoiler alert): gpu memory fragmentation = slow. Introducing vLLM with PagedAttention:
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    Zhuohan Li
    @zhuohan123
    Jun 20, 2023
    🌟 Thrilled to introduce vLLM with @woosuk_k! 🚀 vLLM is an open-source LLM inference and serving library that accelerates HuggingFace Transformers by 24x and powers @lmsysorg Vicuna and Chatbot Arena. Github: github.com/vllm-project/v… Blog: vllm.ai
    64K064K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Jul 14, 2022
    1/ As some of you know, I recently got tenure at @UCBerkeley. I've been thinking about my research career and the simultaneous evolution of the ML space, and I wanted to share what I've been thinking about:
    medium.com
    How Machine Learning Became Useful
    Reflecting on a Decade of Research in Machine Learning Systems
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Sep 6, 2023
    I have always felt that RL didn't have a killer application, until now. After talking with @natolambert about the future of RL in LLMs, I think RLCF might be the next big thing. If you are working with LLMs and code you should check it out. youtu.be/u8xxEkH3a5g
    22K022K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    May 10, 2023
    .@lmsysorg just released our rankings comparing GPT, Claude, Vicuna and others. Commercial models dominate the top spots but open models are still very good and the only option for most companies. See how @AqueductHQ makes using open LLMs easier: aqueducthq.com/post/the-easie…
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    13K013K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Apr 21, 2025
    I am really excited about "sleep time compute" from my former students that created MemGPT. This is a really creative way to process the context (and external memory) of a model to reflect and extract important knowledge that might help in future conversations. This is also
    user avatar
    Letta
    @Letta_AI
    Apr 21, 2025
    We're excited to release our latest paper, “Sleep-time Compute: Beyond Inference Scaling at Test-Time”, a collaboration with @sea_snell from UC Berkeley and @Letta_AI advisors / UC Berkeley faculty Ion Stoica and @profjoeyg letta.com/blog/sleep-tim…
    15K015K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Jul 7, 2022
    .@joe_hellerstein, @vsreekanti, @cgwu0530 and I have been working on a new project (and company) to simplify infrastructure for data scientists. We're looking for feedback from data engineers who support data scientists. If you or a friend are willing to chat, we'd appreciate it!
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Apr 14, 2025
    We finally have the winners of the Search Arena! Congratulations @GoogleAI and @perplexity_ai! It is interesting to see reasoning models doing so well. I also want to congratulate my students @mirmiroyan, @tsunghan_wu, and @Logan_K_King the rest of the team on their
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    Arena.ai
    @arena
    Apr 14, 2025
    Exciting News! Search Arena Leaderboard🌐 🥇 Gemini-2.5-Pro-Grounding and Perplexity-Sonar-Reasoning-Pro top the leaderboard! Congrats @GoogleDeepMind and @perplexity_ai! 📊 We've open-sourced 7k battles with user votes! 📝 Check out our blog post for detailed analysis. Blog
    8.1K08.1K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    May 7, 2025
    The RL for LLM agents space is heating up! My students in the @NovaSkyAI team @UCBerkeley just launched our first iteration of a multi-turn RL training framework with some impressive results! Also, it's open-source so anyone can now try advanced RL training and probably beat
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    SkyRL-v0: Train Real-World Long-Horizon Agents via Reinforcement Learning | Notion
    From novasky-ai.notion.site
    4.6K04.6K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Jul 18, 2023
    I am excited to announce that two of the LLMs from my group (Gorilla and Vicuna) are on AI Business’s top 12 models. Congrats @shishirpatil_, @tianjun_zhang, @xinw_ai, and the @lmsysorg team.  We are looking forward to working with @Meta on Llama-v2 versions.
    12K012K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Oct 23, 2023
    My students @shishirpatil_ and @tianjun_zhang and their undergrads @_royh021 and @fanjia_yan just presented some exciting new features for #GorillaLLM at Sky Camp camp.gorilla-llm.com. Now you can LoRA fine-tune and get open function calling from one place.
    A picture illustrating some of the exciting new features including open functions, easy fine-tuning support, and LLM execution environments.
    5.4K05.4K
  • user avatar
    Joey Gonzalez
    @profjoeyg
    Apr 29, 2025
    Multi-agent systems are supposed to provide a framework for decomposing problems and a mechanism to incorporate competing objectives. Yet, despite the significant progress in AI and reasoning, useful multi-agent systems remain the future (and not the present). Why don't
    user avatar
    Melissa Pan
    @melissapan
    Apr 25, 2025
    🚨 Why Do Multi-Agent LLM Systems Fail? ⁉️ 🔥 Introducing MAST: The first multi-agent failure taxonomy - consists of 14 failure modes and 3 categories, generalizes for diverse multi-agent systems and tasks! Paper: arxiv.org/pdf/2503.13657 Code: github.com/multi-agent-sy… 🧵1/n
    MAST: A Taxonomy of MAS Failure Modes.
    26K026K
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