Does OpenVLA run on WidowX 250 S?
works
Capabilities
| Capability | State | Notes | Evidence |
|---|---|---|---|
| Train / fine-tune | works | OpenVLA's pretraining mixture includes BridgeData V2, and the repo documents LoRA and full fine-tuning on BridgeData V2 (bridge_orig). | ev-openvla-readme-bridge-ft |
| Real-robot inference | works | Out-of-the-box evaluation on the real Bridge WidowX through the BridgeData V2 WidowX controller stack (bridge_data_robot, server-client). | ev-openvla-paper-widowx, ev-openvla-readme-eval, ev-bridgev2-paper |
| Simulation inference | no verified evidence | — | |
| Teleop + record | no verified evidence | — |
Evidence 4 sources; the cell shows the highest tier
- T1 · upstream documentedpapersource 2024-09-05verified 2026-10-24 (1d ago)
OpenVLA paper, Sec. 5.1: the authors evaluate OpenVLA out of the box on the real BridgeData V2 WidowX robot across visual, motion, physical, semantic and language-grounding tasks (Fig. 3, Table 4).
“We evaluate OpenVLA’s performance “out-of-the-box” on two robot embodiments: the WidowX robot from the BridgeData V2 evaluations [6] (see Fig. 1, left)”
https://arxiv.org/abs/2406.09246v3 - T1 · upstream documentedofficial-docssource 2025-03-23verified 2026-10-24 (1d ago)
OpenVLA README 'Evaluating OpenVLA' section: run real BridgeData V2 WidowX evals using the rail-berkeley/bridge_data_robot controller (widowx_envs) in Docker plus the openvla eval script.
“Added new section, [Evaluating OpenVLA](#evaluating-openvla), with instructions for running BridgeData V2 WidowX robot evals”
https://github.com/openvla/openvla/blob/c8f03f48af692657d3060c19588038c7220e9af9/README.md - T1 · upstream documentedofficial-docssource 2025-03-23verified 2026-10-24 (1d ago)
OpenVLA README gives LoRA and full fine-tuning commands on BridgeData V2.
“We show how you can fully fine-tune OpenVLA on [BridgeData V2]”
https://github.com/openvla/openvla/blob/c8f03f48af692657d3060c19588038c7220e9af9/README.md - T1 · upstream documentedpapersource 2024-01-17verified 2026-10-24 (1d ago)
BridgeData V2 paper: the Bridge robot is a WidowX 250, which ties 'the WidowX robot from the BridgeData V2 evaluations' to this robot.
“showing the WidowX 250 robot arm and various cameras.”
https://arxiv.org/abs/2308.12952v3
Embed this cell
Badge for READMEs and model cards. It always shows the current state.
[](https://caniembody.pages.dev/compat/widowx-250/openvla)<iframe src="https://caniembody.pages.dev/embed/widowx-250/openvla" width="380" height="132" style="border:0" title="OpenVLA on WidowX 250 S | CanIEmbody"></iframe>History
- 2026-10-25 fecccd1 Initial release: robot policy compatibility matrix · Danilo Znamerovszkij