# Gemma 4 31B API Pricing

As of October 10, 2026, Gemma 4 31B costs $0.14 per 1M input tokens and $0.40 per 1M output tokens from Amazon Bedrock Mantle, the lowest of 2 providers. It has a 256,000-token context window and returns up to 256,000 tokens per response.

- Page: https://models.litellm.ai/models/gemma-4-31b
- Lab: Google
- LiteLLM model name: `bedrock_mantle/google.gemma-4-31b`
- Context window: 256,000 tokens
- Max output: 256,000 tokens
- Added to LiteLLM: June 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 |
|---|---|---|---|---|---|---|---|
| Amazon Bedrock Mantle | `bedrock_mantle/google.gemma-4-31b` | $0.14 | $0.40 | – | – | – | 256K |
| Cerebras | `cerebras/gemma-4-31b` | $0.99 | $1.49 | – | – | – | 128K |
| Amazon Bedrock Mantle (us-gov-west-1) | `bedrock_mantle/us-gov-west-1/google.gemma-4-31b` | $0.168 | $0.48 | – | – | – | 256K |

## Cost examples

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

- Amazon Bedrock Mantle: $0.48
- Cerebras: $2.725

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

- Amazon Bedrock Mantle: $1.48
- Cerebras: $10.20

## Features

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

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="bedrock_mantle/google.gemma-4-31b",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does Gemma 4 31B cost?

Gemma 4 31B costs $0.14 per 1M input tokens and $0.40 per 1M output tokens from Amazon Bedrock Mantle, the lowest of 2 providers.

### What is the context window of Gemma 4 31B?

Gemma 4 31B has a 256,000-token context window and returns up to 256,000 tokens per response.

### Which providers offer Gemma 4 31B?

Gemma 4 31B is available from 2 providers through LiteLLM: Amazon Bedrock Mantle and Cerebras. The lowest price is on Amazon Bedrock Mantle.

### How do I call Gemma 4 31B with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="bedrock_mantle/google.gemma-4-31b", 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 Gemma 4 31B support?

Gemma 4 31B supports function calling, structured output, image input and reasoning. It does not support parallel tool calls.

### When did LiteLLM add Gemma 4 31B?

Gemma 4 31B was added to LiteLLM's model price file in June 2026.

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