Robotics
LeRobot
smolvla
libero
imitation-learning
vision-language-action
few-shot

SmolVLA seen-expert on LIBERO-90 (100k)

Frozen seen-domain SmolVLA checkpoint after 100k imitation steps on libero_90. This is the immutable origin for every target few-shot run in the project. It has not been trained on the three held-out libero_goal tasks.

Code: github.com/alexsuw/smolvla-libero-fewshot
Few-shot family (30 naive FT checkpoints): alexsuw/smolvla-libero-fewshot-naive-baseline
Collection: alexsuw/smolvla-libero-few-shot-6a8b009357482d2b4b9d3c2f

Research question

How many held-out expert demonstrations does SmolVLA need, after LIBERO-90 domain adaptation, to solve a new language-conditioned manipulation task?

Pinned sources

Artifact Link Revision / id
Base policy lerobot/smolvla_base c83c3163b8ca9b7e67c509fffd9121e66cb96205
SmolVLA arXiv:2506.01844 paper
Dataset nvidia/LIBERO_LeRobot_v3 e5907374380b8f96511957e6ba5582be52a1e179
LIBERO arXiv:2306.03310 · code benchmark
LeRobot huggingface/lerobot d451fe4f1f1b00a812f95aa9534389b5e42ab155

Training suite: libero_90 only. Vision encoder and VLM backbone frozen; Action Expert + state/action projections trained.

This file

Field Value
run_id seen__expert__libero90__nall__s42__20260822T010019Z__gd4b8fb8
step 100000
weights.pt SHA-256 2cd510a594a87580f7368b782ca9b37332c0e5002d807093c759e95fbfb57c88
seen-probe success 24/30 = 0.80 on three frozen libero_90 probes, seeds 1000–1009, horizon 300
optimizer.pt not uploaded (eval does not need it)

Selected from libero_90 probes only. Target-task success was not used to pick this checkpoint, the learning rate, or the training length.

Normalization

Deploy this checkpoint with suite-wide libero_90 MEAN_STD. Do not attach held-out libero_goal overlay statistics. That mix zeros seen-probe success and is a deployment incompatibility, not a measure of parameter forgetting.

License

Weights are a derivative of lerobot/smolvla_base trained on nvidia/LIBERO_LeRobot_v3. Project code is Apache-2.0; follow upstream model and dataset terms for the weights.

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