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Can a single AI stack plan like a researcher, reason over scenes, and transfer motions across different robots—without retraining from scratch? Google DeepMind’s Gemini Robotics 1.5 says yes, by splitting embodied intelligence into two models: Gemini Robotics-ER 1.5 for high-level embodied reasoning (spatial understanding, planning, progress/success estimation, tool-use) and Gemini Robotics 1.5 for low-level visuomotor control. The system targets long-horizon, real-world tasks (e.g., multi-step packing, waste sorting with local rules) and introduces motion transfer to reuse data across heterogeneous platforms.
What actually is the stack?
- Gemini Robotics-ER 1.5 (reasoner/orchestrator): A multimodal planner that ingests images/video (and optionally audio), grounds references via 2D points, tracks progress, and invokes external tools (e.g., web search or local APIs) to fetch constraints before issuing sub-goals. It’s available via the Gemini API in Google AI Studio.
- Gemini Robotics 1.5 (VLA controller): A vision-language-action model that converts instructions and percepts into motor commands, producing explicit “think-before-act” traces to decompose long tasks into short-horizon skills. Availability is limited to selected partners during the initial rollout.
Why split cognition from control?
Earlier end-to-end VLAs (Vision-Language-Action) struggle to plan robustly, verify success, and generalize across embodiments. Gemini Robotics 1.5 isolates those concerns: Gemini Robotics-ER 1.5 handles deliberation (scene reasoning, sub-goaling, success detection), while the VLA specializes in execution (closed-loop visuomotor control). This modularity improves interpretability (visible internal traces), error recovery, and long-horizon reliability.
Motion Transfer across embodiments
A core contribution is Motion Transfer (MT): training the VLA on a unified motion representation built from heterogeneous robot data—ALOHA, bi-arm Franka, and Apptronik Apollo—so skills learned on one platform can zero-shot transfer to another. This reduces per-robot data collection and narrows sim-to-real gaps by reusing cross-embodiment priors.
Quantitative signals
The research team showcased controlled A/B comparisons on real hardware and aligned MuJoCo scenes. This includes:
- Generalization: Robotics 1.5 surpasses prior Gemini Robotics baselines in instruction following, action generalization, visual generalization, and task generalization across the three platforms.
- Zero-shot cross-robot skills: MT yields measurable gains in progress and success when transferring skills across embodiments (e.g., Franka→ALOHA, ALOHA→Apollo), rather than merely improving partial progress.
- “Thinking” improves acting: Enabling VLA thought traces increases long-horizon task completion and stabilizes mid-rollout plan revisions.
- End-to-end agent gains: Pairing Gemini Robotics-ER 1.5 with the VLA agent substantially improves progress on multi-step tasks (e.g., desk organization, cooking-style sequences) versus a Gemini-2.5-Flash-based baseline orchestrator.
Safety and evaluation
DeepMind research team highlights layered controls: policy-aligned dialog/planning, safety-aware grounding (e.g., not pointing to hazardous objects), low-level physical limits, and expanded evaluation suites (e.g., ASIMOV/ASIMOV-style scenario testing and auto red-teaming to elicit edge-case failures). The goal is to catch hallucinated affordances or nonexistent objects before actuation.
Competitive/industry context
Gemini Robotics 1.5 is a shift from “single-instruction” robotics toward agentic, multi-step autonomy with explicit web/tool use and cross-platform learning, a capability set relevant to consumer and industrial robotics. Early partner access centers on established robotics vendors and humanoid platforms.
Key Takeaways
- Two-model architecture (ER
VLA): Gemini Robotics-ER 1.5 handles embodied reasoning—spatial grounding, planning, success/progress estimation, tool calls—while Robotics 1.5 is the vision-language-action executor that issues motor commands. - “Think-before-act” control: The VLA produces explicit intermediate reasoning/traces during execution, improving long-horizon decomposition and mid-task adaptation.
- Motion Transfer across embodiments: A single VLA checkpoint reuses skills across heterogeneous robots (ALOHA, bi-arm Franka, Apptronik Apollo), enabling zero-/few-shot cross-robot execution rather than per-platform retraining.
- Tool-augmented planning: ER 1.5 can invoke external tools (e.g., web search) to fetch constraints, then condition plans—e.g., packing after checking local weather or applying city-specific recycling rules.
- Quantified improvements over prior baselines: The tech report documents higher instruction/action/visual/task generalization and better progress/success on real hardware and aligned simulators; results cover cross-embodiment transfers and long-horizon tasks.
- Availability and access: ER 1.5 is available via the Gemini API (Google AI Studio) with docs, examples, and preview knobs; Robotics 1.5 (VLA) is limited to select partners with a public waitlist.
- Safety & evaluation posture: DeepMind highlights layered safeguards (policy-aligned planning, safety-aware grounding, physical limits) and an upgraded ASIMOV benchmark plus adversarial evaluations to probe risky behaviors and hallucinated affordances.
Summary
Gemini Robotics 1.5 operationalizes a clean separation of embodied reasoning and control, adds motion transfer to recycle data across robots, and showcases the reasoning surface (point grounding, progress/success estimation, tool calls) to developers via the Gemini API. For teams building real-world agents, the design reduces per-platform data burden and strengthens long-horizon reliability—while keeping safety in scope with dedicated test suites and guardrails.
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“}]] [[{“value”:”Can a single AI stack plan like a researcher, reason over scenes, and transfer motions across different robots—without retraining from scratch? Google DeepMind’s Gemini Robotics 1.5 says yes, by splitting embodied intelligence into two models: Gemini Robotics-ER 1.5 for high-level embodied reasoning (spatial understanding, planning, progress/success estimation, tool-use) and Gemini Robotics 1.5 for low-level visuomotor
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