Gemma 4 E4B API

About Gemma 4 E4B

Gemma 4 E4B is a Google open multimodal chat model with image input, function calling, structured output, and efficient instruction following.

Supports text and image input, streaming, function tools, structured JSON output, seed control, and thinking mode on by default. Billing is per successful message.

Also known as Google Gemma 4 E4B, Gemma-4-E4B

Gemma 4 E4B specs

Model ID

gemma-4-e4b

Provider

Google

Category

Text Generation

Released

Mar 31, 2026

Context window

8K tokens

Max output

4,096 tokens

Input

TextImage

Output

Text

Endpoints

POST /v1/chat/completions
POST /v1/responses
POST /v1/messages

Gemma 4 E4B API pricing

Live pay-as-you-go rates from the EmpirioLabs catalog. You are billed only for what you use, with no monthly minimum.

How to call the Gemma 4 E4B API

Gemma 4 E4B serves the OpenAI-compatible Chat Completions API. Point any OpenAI SDK at https://api.empiriolabs.ai/v1 with your EmpirioLabs API key and use the model id gemma-4-e4b. Get an API key from the EmpirioLabs dashboard.

curl https://api.empiriolabs.ai/v1/chat/completions \
  -H "Authorization: Bearer $EMPIRIOLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemma-4-e4b",
    "messages": [
      {"role": "user", "content": "Write a haiku about the ocean."}
    ]
  }'

from openai import OpenAI

client = OpenAI(
    base_url="https://api.empiriolabs.ai/v1",
    api_key="YOUR_EMPIRIOLABS_API_KEY",
)

response = client.chat.completions.create(
    model="gemma-4-e4b",
    messages=[{"role": "user", "content": "Write a haiku about the ocean."}],
)
print(response.choices[0].message.content)

Gemma 4 E4B API parameters

Request parameters supported by the Gemma 4 E4B API on EmpirioLabs. Defaults apply when a field is omitted.

Good to know

Supports text and image input, streaming, function tools, structured JSON output, seed control, and thinking mode on by default. Billing is per successful message.

Gemma 4 E4B API: common questions

How much does the Gemma 4 E4B API cost?

On EmpirioLabs, Gemma 4 E4B is billed pay as you go: Per Message $0.03 fixed; Web Search (Linkup) $0.013 per call when invoked. The live rate card on this page always matches what the API charges.

What is the context window of Gemma 4 E4B?

Gemma 4 E4B supports a 8K-token context window with up to 4,096 output tokens per response.

Is the Gemma 4 E4B API OpenAI-compatible?

Yes. Gemma 4 E4B serves the OpenAI-compatible Chat Completions API, so existing OpenAI SDKs work by pointing base_url at https://api.empiriolabs.ai/v1 and setting the model id to gemma-4-e4b.

Can I try Gemma 4 E4B in the browser before integrating?

Yes. The EmpirioLabs playground runs Gemma 4 E4B in the browser with the same parameters the API exposes, so you can test prompts before writing code.

How do I get a Gemma 4 E4B API key?

Create an EmpirioLabs account, then generate a key under API Keys in the dashboard. Billing is pay-as-you-go credits, so you only pay for the requests you make.