As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/m/gemini-robotics-er-1/

# Gemini Robotics-ER 1.5 / 1.6

Google DeepMind, Gemini Robotics family. Status: retired. Type: robotics model. Released: 2025-09-25. Training cutoff: 2025-01.

## How to call it

| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Gemini API (shut down) | `gemini-robotics-er-1.6-preview` |  | https://ai.google.dev/gemini-api/docs/deprecations |
| Gemini API (shut down) | `gemini-robotics-er-1.5-preview` |  | https://ai.google.dev/gemini-api/docs/deprecations |

## Pricing

- Price not published.
- Last checked: 2026-09-29

## Specs

- Input: text, image, video, audio
- Output: text
- Context window: 131,072 tokens
- Max output: 65,536 tokens
- Open weights: no
- Licence: proprietary

## Where it stands

- Newer robotics models in the registry since its release: 21. The 5 newest:
  - Praxis-1 (2026-09-30) https://postcutoff.com/m/praxis-1/
  - Helix 2.5 (2026-09-17) https://postcutoff.com/m/figure-helix-2-5/
  - UnifoLM-WLA-1.0 (2026-09-10) https://postcutoff.com/m/unifolm-wla-1-0/
  - Skild S1 (Skild Brain) (2026-08-25) https://postcutoff.com/m/skild-s1/
  - Generalist GEN-1.5 (2026-08-19) https://postcutoff.com/m/generalist-gen-1-5/
- After it from Google: Gemini Robotics On-Device 2 (2026-07-30) https://postcutoff.com/m/gemini-robotics-on-device-2/
- Closed weights; access is hosted only.

## What stands out

- Embodied reasoning in the public Gemini API: ER 1.5 (2025-09-25) exposed embodied reasoning (pointing, 2D boxes, trajectories, task planning, tool calls) available in the public Gemini API, while the VLA stayed partner-only. Source: https://ai.google.dev/gemini-api/docs/deprecations
- Instrument reading (ER 1.6): Reads pressure gauges, thermometers, sight glasses and digital readouts: 86% (93% with agentic vision) vs 23% for ER 1.5 and 67% for Gemini 3 Flash; built with Boston Dynamics and used by Spot for inspections. Source: https://deepmind.google/blog/gemini-robotics-er-1-6/

## Notes

Retired. gemini-robotics-er-1.5-preview released 2025-09-25, shut down 2026-04-30 (replaced by 1.6). gemini-robotics-er-1.6-preview released 2026-04-14, shut down 2026-08-31 (replaced by gemini-robotics-er-2-preview). Token limits and Jan 2025 cutoff are those listed for ER 1.6 on the Gemini API model page.

Earlier embodied-reasoning previews; use [Gemini Robotics ER 2](gemini-robotics-er-2.md) instead.

Changelog: 2026-09-29 added ER 1.6 instrument-reading capability and linked the new entry 2026-04-14-gemini-robotics-er-1-6.

Sources: [ER 1.6 blog](https://deepmind.google/blog/gemini-robotics-er-1-6/), [deprecations](https://ai.google.dev/gemini-api/docs/deprecations), [ER 2 model page (lists 1.6 specs)](https://ai.google.dev/gemini-api/docs/models/gemini-robotics-er-2-preview).

Model page: https://postcutoff.com/m/gemini-robotics-er-1/