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Tyler Griggs
150 posts
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Tyler Griggs
@tyler_griggs_
@thinkymachines, PhD @UCBerkeley Sky Lab building SkyRL
Berkeley, CA
tyler-griggs.github.io
Joined May 2023
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  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Oct 1, 2025
    I had the chance to try @thinkymachines' Tinker API for the past couple weeks. Some early impressions: Very hackable & lifts a lot of the LLM training burden, a great fit for researchers who want to focus on algs + data, not infra. My research is in RL, and many RL fine-tuning
    user avatar
    Thinking Machines
    @thinkymachines
    Oct 1, 2025
    Introducing Tinker: a flexible API for fine-tuning language models. Write training loops in Python on your laptop; we'll run them on distributed GPUs. Private beta starts today. We can't wait to see what researchers and developers build with cutting-edge open models!
    85K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Oct 6, 2025
    Introducing SkyRL tx 🧸, an open-source project to implement the Tinker API. The SkyRL team is excited about the Tinker API and the opportunities of using a single canonical interface that unifies training and inference. SkyRL tx lets you run a Tinker-like service locally today,
    novasky-ai.notion.site
    SkyRL tx: An open source project to implement the Tinker API
    23K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Jul 1, 2025
    We did a deep-dive on the (many) open source RL frameworks out there, and tried to distill their core design philosophies and supported features. If you're trying to decide which framework to use for your next RL run, this might help:
    Open Source RL Libraries for LLMs | Anyscale
    From anyscale.com
    22K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Jul 4, 2024
    Cut LLM inference costs by mixing GPU types! Introducing Mélange, a framework to derive minimal-cost GPU allocations for a given LLM service. The large and growing GPU market presents opportunities to exploit GPU heterogeneity and slash LLM costs: (1/8 with links👇)
    43K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Sep 8, 2025
    SkyRL x Environments Hub is live!! Train on any of 100+ environments natively on SkyRL today ➡️ github.com/NovaSky-AI/Sky… This was super fun to work on, the @PrimeIntellect team crushed it, go OSS!
    user avatar
    Prime Intellect
    @PrimeIntellect
    Aug 27, 2025
    Introducing the Environments Hub RL environments are the key bottleneck to the next wave of AI progress, but big labs are locking them down We built a community platform for crowdsourcing open environments, so anyone can contribute to open-source AGI
    00:00
    28K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Sep 6, 2025
    Highly recommend poking through the Environments Hub, it's a lot of fun. Stay tuned for SkyRL integration... ✈️
    This post is unavailable.
    25K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Oct 21, 2025
    Very honored to receive an Amazon AI PhD fellowship alongside many other wonderful students in the lab, go @BerkeleySky!
    user avatar
    UC Berkeley EECS
    @Berkeley_EECS
    Oct 21, 2025
    Amazing! 10 @berkeleyeecs @SkyCompLab grad students are Amazon AI PhD Fellows! Congrats! Learn more about our fellows here: bit.ly/48Hl88q #AmazonAIFellowship @BerkeleySky
    10K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Oct 21, 2025
    SkyRL tx just hit v0.0.3, adding full MoE support, better checkpointing, and a first stab at implementing the sampling interface. Very close to a complete RL loop on a locally-hosted @thinkymachines Tinker API server! Blog: novasky-ai.notion.site/skyrl-tx-003
    5.3K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Jun 26, 2025
    We at @NovaSkyAI have been hacking on RL across the stack—algorithms, envs, perf optimization. But progress is slowed by RL frameworks with tightly-coupled components that lack interfaces. To fill this gap, we upgraded SkyRL into a highly-modular RL framework. Check it out!!
    user avatar
    NovaSky
    @NovaSkyAI
    Jun 26, 2025
    ✨Release: We upgraded SkyRL into a highly-modular, performant RL framework for training LLMs. We prioritized modularity—easily prototype new algorithms, environments, and training logic with minimal overhead. 🧵👇 Blog: novasky-ai.notion.site/skyrl-v01 Code: github.com/NovaSky-AI/Sky…
    5.2K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Sep 11, 2025
    SkyRL just crossed 20 contributions! (if you count gemini and claude, which of course we do) It's a modest start, but very fun to see contributions start coming in from the community!
    2.8K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Oct 13, 2025
    Congrats to all the SkyRL contributors, great work!
    user avatar
    NovaSky
    @NovaSkyAI
    Oct 13, 2025
    SkyRL just crossed 1000 Github stars! Thank you to all the wonderful contributors and users building this project together 🥳 Check it out: github.com/NovaSky-AI/Sky…
    3.3K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Oct 16, 2025
    I'll be giving a talk on SkyRL at the Ray Summit in a few weeks, please join!
    user avatar
    Robert Nishihara
    @robertnishihara
    Oct 16, 2025
    Ray Summit is going to be excellent. Can't wait to hear from xAI, Perplexity, Cursor, Thinking Machines, Physical Intelligence, Applied Intuition, Prime Intellect, vLLM, and so many others. Some major themes this year: - Reinforcement learning infra - Multimodal data (lots of
    5.8K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Oct 14, 2025
    SkyRL tx is our project to implement an open backend for the @thinkymachines Tinker API, and with version v0.0.2 it's ready to actually train some (multi-)LoRA models! Blog: novasky-ai.notion.site/skyrl-tx-v002 Code: github.com/NovaSky-AI/Sky…
    SkyRL tx v0.0.2 Release
    From novasky-ai.notion.site
    16K
  • user avatar
    Tyler Griggs
    @tyler_griggs_
    Nov 3, 2025
    SkyRL tx is now bumped to v0.1, which adds support for running @thinkymachines Tinker Cookbook RL loops unmodified out of the box! We'll be talking more about tx at Ray Summit tomorrow at 4pm at the Ray Summit, please join if you're around novasky-ai.notion.site/skyrl-tx-v010
    5.4K