Google: Gemini Robotics-ER 2 Preview
Gemini Robotics-ER 2 Preview is a reasoning model from Google released on Jul 30, 2026. It reads text, images, files and audio and writes text, with a 131K token context window and up to 66K tokens per reply.
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It costs $1 per million input tokens and $5 per million output tokens. Cached input bills at $0.10, 90% less than fresh input.
It supports tool calling, structured JSON output and prompt caching.
- Modalities
- In / out price
- $1 / $5 per 1M
- Context
- 131K
- Max output
- 66K
- Released
- Jul 30, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Gemini Robotics-ER 2 Preview pricing
USD, as listed on Oct 20, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $1 / 1M tokens | |
|---|---|---|
| Output | $5 / 1M tokens | |
| Cached input (read) | $0.10 / 1M tokens | 90% off input |
| Audio input | $1 / 1M tokens |
What Gemini Robotics-ER 2 Preview costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Gemini Robotics-ER 2 Preview through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Reasoning
reasoning - Temperature
temperature
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Gemini Robotics-ER 2 Preview questions
How much does the Gemini Robotics-ER 2 Preview API cost?
$1 per million input tokens and $5 per million output tokens, with cached input at $0.10. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Gemini Robotics-ER 2 Preview?
131,072 tokens of input, and it can write up to 65,536 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Does Gemini Robotics-ER 2 Preview support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is Gemini Robotics-ER 2 Preview open source?
No. Google serves it through an API only, so you cannot download the weights or host it yourself.
When was Gemini Robotics-ER 2 Preview released?
Jul 30, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 20, 2026. The summary is written from these facts.