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RioShiina  new activity 13 days ago
zero-gpu-explorers/README:All ZeroGPU Spaces stuck on "Starting" with clean logs — CPU and paid GPU unaffected
Q-bert  authored a paper 22 days ago
ARCHead: Activation-Metric Residual Correction for Large Language Model Output Heads
gsarti  authored a paper about 1 month ago
Beyond the Commitment Boundary: Probing Epiphenomenal Chain-of-Thought in Large Reasoning Models
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AtAndDev 
posted an update 1 day ago
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NEW SPECK UPDATES:

Just hit #14 and #15 with out FIRST models on Open SLM Leaderboard. The models were trained on 5B tokens, while competing with similarly sized models trained on more than 6-20x the data.

A new base model Speck1.5-140M being trained right now on a higher quality corpus and will be released soon.
SpeckChat3 is coming very soon with 1 million samples, specifically designed to post train small base models.

Also, just to clarify stuff, we will NOT release anything that is NOT MIT licensed EVER. Openness is needed in small language research.

Thanks to everyone supporting the project, and stay tuned for new releases!
AtAndDev 
posted an update 3 days ago
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SPECK UPDATES:
1 New instruct model tuned on top of Speck1-140M: specklabs/Speck1-140M-Instruct
2 Instruction tuning datasets
2 GGUFs

Much more coming soon:
Speck1.1-140M-Instruct that is post trained on SpeckChat2 will be coming very soon
New base model Speck1.5-140M is coming with a much higher quality corpus

Thanks to everyone who is already supporting the project, and stay tuned for new releases!
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AtAndDev 
posted an update 4 days ago
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FIRST SPECK MODEL RELEASED:
specklabs/Speck1-140M

new models coming very soon (both instruct and much better models), with much much higher training scale as i am getting marenostrum5 access soon!
we will be looking at 100b-2t token budgets :)
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sergiopaniego 
posted an update 8 days ago
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super interesting new paper from Microsoft "Agent Lightning v1.0: Towards Harnessed Agentic RL" by Zhiyuan He et al.

same idea we've seen already several times: you train the agent inside the real harness it ships with, instead of a reimplementation of it

now that recipe has a name → harnessed agentic RL

paper: huggingface.co/papers/2608.17528

the tricky bit they nail down: one rollout is not one training sample

the harness calls the model many times, so a single episode → a variable number of (prompt, response) rows

you don't even know the batch size until the episode finishes running

its real contribution is being first to systematically map the four problems that fall out of that:

> retokenization + sample merging
> advantage calculation over a variable sample count
> loss normalization at the rollout level, not per sample
> backend scheduling when the batch size is dynamic

and it actually works → plain RL inside the real harness, no reimplementation

Qwen3.5-9B on SWE-bench Verified 41.8 → 56.4 (+14.6), with only ~6k examples

the whole thing is ~3,500 lines, any harness, self-hosted k8s

from our side, we've shared some materials on the same line you may want to check out :)

> Agentic RL: Token-In, Token-Out Done Right: https://huggingface.co/blog/huggingface/tito
> a full worked example, opencode owning its loop trained with GRPO: https://huggingface.co/blog/sergiopaniego/trl-openenv-harness-training
> Harness, Scaffold, and the AI Agent Terms Worth Getting Right: https://huggingface.co/blog/agent-glossary

on a similar line:

https://x.com/SergioPaniego/status/2062911580564496576
RioShiina 
in zero-gpu-explorers/README 13 days ago

All ZeroGPU Spaces stuck on "Starting" with clean logs — CPU and paid GPU unaffected

👍 2
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#183 opened 13 days ago by
luna0805
sergiopaniego 
posted an update 18 days ago
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Something I really like when I study a subject is understanding its history, how it reached the point where it is today

I did that exercise for RL in post-training: from RLHF and PPO, to verifiable rewards, to the GRPO family of variants, to agents acting in environments. Everything is backed by what the labs themselves say in their public reports (DeepSeek, Qwen, Kimi, GLM-5, Nemotron, Mistral and more), in their own words

This is the companion piece to Class 3 of our Training Agents series with @burtenshaw . The class explains how GRPO works, with three hands-on experiments. The article shows where the same ideas appear at frontier scale

https://huggingface.co/blog/sergiopaniego/agentic-rl-2026
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BramVanroy 
posted an update 18 days ago
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**I benchmarked HF buckets against https access for Common Crawl.**

Took me a while to get round to do this but I benchmarked access to Common Crawl via https vs hf buckets. Both experiments were run at night in Europe. I do not think other hardware problems were impacting the speeds since CPU processing time of the non-download pipeline components were highly similar (within 2% identical) and below only the WarcReader speeds of datatrove are used.

Experiment: selected 5 disjoint samples of 64 files each (randomly from the latest crawl; 20,499 docs/file). Those five batches were then processed by 32 single-core tasks with 4GB/core (five batches to calculate CIs). Paired experiment between using https and hf bucket.

- https: 40.0 [39.3-40.6] (seconds per WARC file)
- hf bucket: 172.0 [122.7-221.2]

That is a difference of about 4x in streaming speed. You'll see that https is also more stable (smaller CI).

I also ran raw throughput tests to the endpoints to measure rate limiting (64MiB transfer at 8/32/128/256 concurrent readers) and rate limiting seems not an issue for either: at any of those parallel reader numbers, their respective speeds stay about the same.

Note that, given CC scale, this is still a small test. Rate limiting may become more obvious when processing a full crawl. I do not know whether the https endpoint vs HF bucket will shut you out earlier with which limits.
gagan3012 
authored a paper 23 days ago
sergiopaniego 
posted an update 23 days ago
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we just released a new blog "Training a coding agent using the OpenCode harness in remote HF sandboxes with TRL and OpenEnv"

you can take a real coding agent (OpenCode), let it run its own tool loop against real coding problems, and train it with RL on the exact tokens it produced

and every rollout runs in its own remote HF sandbox, so rollouts scale out beyond one machine

the loop:
- OpenCode owns its tool loop inside an OpenEnv sandbox
- an in-sandbox proxy records the real token ids + logprobs, per turn
- a hidden-test verifier scores the result, and that is the reward
- TRL trains with AsyncGRPO, weights sync back to vLLM over NCCL

blog + runnable example: https://huggingface.co/blog/sergiopaniego/trl-openenv-harness-training
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gagan3012 
submitted a paper to Daily Papers 23 days ago
sergiopaniego 
posted an update 24 days ago
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LFM2.5-2.6B just dropped!

and the @liquidai blog comes with some nice details about the training procedure, so let's analyze it.

basically, a full agent training pipeline but compressed into 2.6B

base model → SFT → specialized teachers per domain (SFT + RLVR) → on-policy distillation back into one student → agentic RL

the two most interesting stages

→ MOPD: the student generates, each prompt routes to its domain teacher for token-level feedback. teachers branch from the same SFT checkpoint, so their signal stays close to the student's distribution

→ agentic RL: multi-turn GRPO inside real harnesses (OpenClaw, Hermes Agent), one sandbox per rollout, a proxy captures token-level trajectories while the harness stays a black box

this makes a 2.6B that beats much larger models on instruction following and tool use

SFT, distillation, RL, RL envs: exactly what we're covering in our Training Agents livestream series (next one coming soon!)

→ model: LiquidAI/LFM2.5-2.6B
→ blog: https://www.liquid.ai/blog/lfm2-5-2-6b
→ live series: https://www.youtube.com/playlist?list=PLo2EIpI_JMQvQZm-kVlz4wY1vWF0LBcf5
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sergiopaniego 
posted an update 29 days ago
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Simon Willison (@simonw ) has asked every new model to draw a pelican riding a bicycle for some time now

you look at the drawing and you know. but there is no number, so nothing can train against it, no?

I turned this idea into an rl env in OpenEnv. now, you can eval any model against it, and train against it with TRL

read the details!🤓

https://huggingface.co/blog/sergiopaniego/pelican-env-openenv
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sergiopaniego 
posted an update 30 days ago
sergiopaniego 
posted an update about 1 month ago
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quick reminder! 🚨

tomorrow (Tuesday, July 28), we're back with Class 3 of the Training Agents live series

🧠 what: reinforcement learning for training agents (GRPO): how it works, how to implement it in TRL, and end-to-end examples
🗓️ when: Tuesday, July 28 - 🕔 5:00 PM CEST / 8:30 PM IST
📍 where: Live on @huggingface 's X, YouTube, and LinkedIn

live: https://www.youtube.com/watch?v=ztdTed5egrM

class 1: https://x.com/SergioPaniego/status/2069382207618379813
class 2: https://x.com/SergioPaniego/status/2075180665184686187
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sergiopaniego 
posted an update about 1 month ago
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you can now train your own coding agents with trl + openenv, starting with opencode

we just added end-to-end support for training agent harnesses:

> TRL: a loop-owning training path (AsyncGRPOTrainer + HarnessRolloutWorker) that launches the agent in an OpenEnv session, reads back its trace, reconstructs the training samples, and trains with AsyncGRPO
> OpenEnv: the OpenCode harness environment plus a transparent proxy that forwards the agent's model calls and records each turn's token ids and logprobs

you train the actual opencode agent as is, it runs its own loop and tools and the policy learns from the exact tokens it produced

we're shipping a self-contained example: local subprocess sandbox, DeepCoder problems, validated on Qwen3-8B.

> example: https://github.com/huggingface/trl/blob/main/examples/scripts/openenv/opencode.py
> docs: https://huggingface.co/docs/trl/main/openenv

and we're working actively on both sides so expect more 🤓
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sergiopaniego 
posted an update about 1 month ago
sergiopaniego 
posted an update about 1 month ago
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join us next Tuesday, July 28, for Class 3 of the Training Agents live series!

we'll dive into reinforcement learning for agent training, covering the intuition behind GRPO, how it works, and how to implement it in TRL with practical, e2e examples

see you there 🤠

live: https://www.youtube.com/live/ztdTed5egrM

> in case you missed class 1:
https://x.com/SergioPaniego/status/2069382207618379813
> and in case you missed class 2: https://x.com/SergioPaniego/status/2075180665184686187
garibida 
authored 2 papers about 1 month ago
garibida 
submitted a paper to Daily Papers about 1 month ago