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Vision-language-action papers focus on deployable robot control

Day · 2026-05-27 · Embodied AI

Vision-language-action (VLA) research in this period is centered on execution: closed-loop planning, reusable skills, tactile force control, and model compression for robots. VERA, PrimitiveVLA, and Ω-QVLA carry the clearest empirical claims, with real-robot or manipulation-suite tests attached to most papers.

Structured execution for manipulation VLAs

Several papers make VLA policies easier to run as long-horizon controllers. PrimitiveVLA cuts demonstrations into 11 reusable primitives and plans primitive sequences at test time; it reports OpenVLA success rising to 45.50% on LIBERO-90-Novel and pi0.5 success reaching 80.25% on LIBERO-Long. ProgVLA uses a 0.1B-parameter policy with compressed multimodal tokens and progress heads, reaching 91.1% average LIBERO success and 68% real-world success over 100 PiPER-arm trials. A separate probing study finds that frozen VLA features already contain a value-like success signal, then uses a linear probe to select among Pi0.5 action chunks, improving pooled hard-3 success to 42.44% against 31.11% for greedy decoding.

Video and phase models as closed-loop action sources

VERA keeps planning in video space and trains a robot-specific Jacobian inverse dynamics model to convert generated frame-to-frame motion into actions. The method reports closed-loop simulation success of 70.0% on Allegro-Sim, 94.0% on Panda-Sim, and 92.5% on PushT-Sim, with the same video planner paired to different robot adapters. Mag-VLA applies a related execution idea at microscale: it fine-tunes Qwen2.5-VL-7B for bimanual magnetic microrobot control, predicts task phase, and emits short dual-arm action chunks. In real tests, approach success is 90% across three tasks, while transport success drops with harder paths.

Touch and force enter the success criteria

The tactile papers treat contact quality as part of the control problem. Tabero builds vision-touch-language data by replaying manipulation trajectories in Isaac Lab with tactile sensing, then predicts pose and force targets for a hybrid controller. It reports over 70% lower average grip force under gentle instructions, while tracking peak and average grip and applied forces. CoP uses a center-of-pressure contact description for dexterous sim-to-real learning on an Allegro hand. On real peg-in-hole insertion, CoP reaches 0.78 success across six shapes, ahead of raw taxels at 0.48 and binary contact at 0.53.

Deployment tests target memory cost and input fragility

Ω-QVLA compresses both the language backbone and diffusion action head of VLA policies to uniform W4A4 precision without training. On Pi 0.5 it reports 98.0% average manipulation success, close to the FP16 reference at 97.1%, while reducing static memory footprint by 71.3%. ReasonBreak covers a different deployment risk: small text corruptions in driving commands can alter reasoning and trajectories in NVIDIA Alpamayo models. In closed-loop simulation, the paper reports up to 72% attack success for trajectory manipulation and links successful attacks to higher collision, off-road, and wrong-lane failures.

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