datasets
Google and Janelia complete a male fruit-fly nervous-system connectome News
Google Research and HHMI Janelia released a public male Drosophila central-nervous-system map with more than 166,000 neurons and 125 million synapses, reconstructed with AI and human proofreading.
A handheld gripper and a head camera can now train robots with no robot demonstrations News
Researchers report that raising the fidelity of handheld human demonstrations removes the need for any robot teleoperation on the target task, with policies trained on handheld data alone reaching parity with robot-taught baselines on four two-armed tasks.
Training data deduplication: why the same text twice makes a model worse Lesson
Deduplication is the process of finding and removing repeated or near-repeated documents from a training corpus, and it reliably makes language models better, cheaper, and safer - the same text seen many times gets memorised rather than learned from.
Hugging Face ships The Stack v3, and this time the code is actually in the box News
Hugging Face released The Stack v3, a code dataset of roughly 4.9 trillion tokens across 173 million repositories with source text embedded inline, ending the v2 arrangement where researchers had to fetch the actual file contents themselves.
The Stack v3 Tool
Hugging Face's code corpus, now with source text embedded inline rather than behind identifiers. A 15.9 TB deduplicated, PII-redacted training split of roughly 4.9 trillion tokens, plus a 113.7 TB unfiltered bucket for teams that want to build their own mix.
Recursive-Task-Synthesis Tool
A public set of 37,484 verified long-horizon terminal-agent tasks, each a runnable bundle with instruction, environment, reference solution and hidden verifier, plus a companion set of 327,000 agent trajectories and three fine-tuned Qwen3.5 checkpoints.
Hugging Face Tool
The main hub for finding, downloading, and trying open AI models and datasets — the field's town square.
HiFi-UMI-2K Tool
Released dataset behind this week's handheld-only robot training result: high-fidelity two-handed human demonstrations captured with a head-mounted stereo rig and tracked grippers, with every trajectory reconstructed and rejected unless a target robot could physically replay it. Covers wiping, shirt folding, remote insertion and produce sorting. Directly usable for imitation-learning experiments without owning a teleoperation setup.
FACET terminal-agent task set Tool
A public release of 6,020 synthesized terminal-agent tasks plus three fine-tuned checkpoints. Each task bundles an instruction, an initialized environment, a reference solution, and an executable verifier, all grounded in the same container state so they cannot drift apart. Directly usable as reinforcement-learning environments for coding and shell agents.
Am I in The Stack? Tool
Lets a developer check whether their GitHub repositories were included in The Stack code dataset, and points to BigCode's removal process. Opted-out repositories are dropped before each patch release.