# Gemini Robotics Er 1.5 Preview API Pricing

As of October 10, 2026, Gemini Robotics Er 1.5 Preview costs $0.30 per 1M input tokens and $2.50 per 1M output tokens on Google Vertex AI, with cache reads at $0 per 1M tokens. It has a 1,048,576-token context window and returns up to 65,535 tokens per response.

- Page: https://models.litellm.ai/models/gemini-robotics-er-1.5-preview
- Lab: Google
- LiteLLM model name: `vertex_ai/gemini-robotics-er-1.5-preview`
- Context window: 1,048,576 tokens
- Max output: 65,535 tokens
- Added to LiteLLM: January 2026
- Prices updated: October 10, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| Google Vertex AI | `vertex_ai/gemini-robotics-er-1.5-preview` | $0.30 | $2.50 | $0 | – | – | 1M |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- Google Vertex AI: $1.85

100 long-document requests with 100,000 input and 2,000 output tokens each:

- Google Vertex AI: $3.50

## Features

Supported: Function calling, Parallel tool calls, Structured output, Image input, Reasoning.
Not supported: Audio output, Prompt caching.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="vertex_ai/gemini-robotics-er-1.5-preview",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does Gemini Robotics Er 1.5 Preview cost?

Gemini Robotics Er 1.5 Preview costs $0.30 per 1M input tokens and $2.50 per 1M output tokens on Google Vertex AI, with cache reads at $0 per 1M tokens.

### What is the context window of Gemini Robotics Er 1.5 Preview?

Gemini Robotics Er 1.5 Preview has a 1,048,576-token context window and returns up to 65,535 tokens per response.

### Which providers offer Gemini Robotics Er 1.5 Preview?

Gemini Robotics Er 1.5 Preview is available from Google Vertex AI through LiteLLM, using the model name vertex_ai/gemini-robotics-er-1.5-preview.

### How do I call Gemini Robotics Er 1.5 Preview with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="vertex_ai/gemini-robotics-er-1.5-preview", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### What features does Gemini Robotics Er 1.5 Preview support?

Gemini Robotics Er 1.5 Preview supports function calling, parallel tool calls, structured output, image input and reasoning. It does not support audio output and prompt caching.

### When did LiteLLM add Gemini Robotics Er 1.5 Preview?

Gemini Robotics Er 1.5 Preview was added to LiteLLM's model price file in January 2026.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json