Roboflow

GoogleGoogleReleased Mar 2025Custom

Gemma 3 4B

Gemma 3 4B has no score on the current Vision Evals. On the earlier Vision Evals board (last updated July 9, 2026) it passed 64.2% of OCR tasks (#44 of 58).

It is an open-weight model from Google under a custom license; check its commercial-use terms.

Gemma 3 4B Interactive Demo

Model settings

Thinking level

Max output tokens

Default 65,536 · max 65,536

Sign in to adjust thinking and output length per run.

Results appear here. Add an image or pick an example to run Gemma 3 4B.

Gemma 3 4B Vision Evals

Gemma 3 4B has not yet been evaluated on the current benchmark. The results below are from the legacy version of Vision Evals, our previous benchmark. See the current Vision Evals

Visual Understanding

77 models · 67 tasks
HighestLowest
This model#73 of 7737.31% pass rate · better than 5%
Score37.31%pass rate across 67 tasks
Speed16.80savg response per task
Cost—$0.050 in · $0.100 out / 1M
Tokens—tokens unavailable
Score key:≥75%40–74%<40%
CategoryPassedScore
Defect Detection9 / 15
60%
Document Understanding5 / 9
55.6%
Object Understanding6 / 14
42.9%
Spatial Understanding5 / 19
26.3%
Object Counting0 / 10
0%
HighestLowest
This model#44 of 5864.19% pass rate · better than 24%
Score64.19%pass rate across 229 tasks
Speed0.92savg response per task
Cost<$0.0001 / task$0.050 in · $0.100 out / 1M
Tokens314 / task300 in · 12 out
Score key:≥75%40–74%<40%
CategoryPassedScore
License Plate Recognition26 / 30
86.7%
Text Recognition22 / 30
73.3%
Focused Scene OCR63 / 99
63.6%
VQA & Extraction35 / 60
58.3%
Handwritten Math1 / 10
10%

Scores based on a single evaluation run · Methodology

View all legacy Vision Evals results →

Gemma 3 4B Overview

Gemma 3 4B, released on March 12, 2025, is the mid-sized member of Google DeepMind’s open-weight Gemma 3 family. With about 4 billion parameters, it is multimodal—supporting text and image inputs and generating text outputs. Like the larger Gemma 3 models, it features a 128,000-token input context window with an output capacity of ~8,192 tokens, enabling it to handle long documents and mixed text–image reasoning tasks.

Gemma 3 4B Pricing

Gemma 3 4B costs $0.050 per 1M input tokens and $0.100 per 1M output tokens.

Input$0.050 / 1M tokens
Output$0.100 / 1M tokens

Pricing updated Nov 10, 2026

Deploy Gemma 3 4B with an API

Gemma 3 4B runs as a hosted REST endpoint through Roboflow Workflows. Pick a task, then hand the prompt to your coding agent or copy the code. Deploying the workflow into a free Roboflow workspace replaces the your-workspace and YOUR_API_KEY placeholders with your own.

Connect your agent to Roboflow (once)

Add the Roboflow MCP server

claude mcp add --transport http roboflow https://mcp.roboflow.com/mcp

Run /mcp and authorize Roboflow in your browser when the OAuth flow opens.

Start a new Claude Code session so the MCP loads, then paste the prompt below (it works the same in any agent).

Deploy this workflow to your Roboflow workspace to use it.

Integrate the Roboflow "Gemma 3 4B" workflow into my app.

- Endpoint: POST https://serverless.roboflow.com/<your-workspace>/workflows/gemma-3-4b-captioning
- Auth: send my Roboflow API key as `api_key` in the request body, read from the ROBOFLOW_API_KEY env var (never hardcode).
- Body: { "api_key": ..., "inputs": { `image`: { type: "url" | "base64", value } } }.
- Billing: this workflow needs no provider API key — inference runs on my Roboflow credits. A BYO provider key can be added to the model step in the Roboflow workflow editor later.

With the Roboflow MCP connected, call `workflows_get` on "gemma-3-4b-captioning" to read the exact input schema (the source of truth), then `workflows_run` on a sample image to confirm the output shape before writing code (the MCP is authenticated, so this needs no key). Without the MCP, use the contract above.

Before running the app, set up these keys so it does not error at runtime:
- `ROBOFLOW_API_KEY` (sent as `api_key`) from https://app.roboflow.com/settings/api
Create a .gitignore'd .env with these variables, using placeholder values for any I haven't given you. Then pause and tell me directly, in your reply: the full path to the .env file, exactly which keys I need to paste in, and the link to get each one. Wait for me to confirm I've added them before you run anything. Do not run the app until I confirm.

Then add the integration to my codebase: match my project's language, framework, and conventions; read every key from environment variables (never hardcode); add basic error handling; and include a small runnable example. If you can't tell what language my project uses, ask me.
Installpip install inference-sdk

Deploy this workflow to your Roboflow workspace to use it.

# Inference runs on your Roboflow credits — no provider API key needed. To bill your own provider account instead, add an api_key to the model step in the Roboflow workflow editor.
# 1. Import the library
from inference_sdk import InferenceHTTPClient

# 2. Connect to your workflow
client = InferenceHTTPClient(
  api_url="https://serverless.roboflow.com",
  api_key="YOUR_API_KEY"
)

# 3. Run your workflow on an image
result = client.run_workflow(
  workspace_name="your-workspace",
  workflow_id="gemma-3-4b-captioning",
  images={
    "image": "YOUR_IMAGE.jpg"  # Path to your image file
  },
  use_cache=True  # cache workflow definition for 15 minutes
)

# 4. Get your results
print(result)

Deploy this workflow to your Roboflow workspace to use it.

// Inference runs on your Roboflow credits — no provider API key needed. To bill your own provider account instead, add an api_key to the model step in the Roboflow workflow editor.
const response = await fetch('https://serverless.roboflow.com/your-workspace/workflows/gemma-3-4b-captioning', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    api_key: 'YOUR_API_KEY',
    inputs: {
      "image": {"type": "url", "value": "IMAGE_URL"}
    }
  })
});

const result = await response.json();
console.log(result);

Deploy this workflow to your Roboflow workspace to use it.

# Inference runs on your Roboflow credits — no provider API key needed. To bill your own provider account instead, add an api_key to the model step in the Roboflow workflow editor.
curl --location 'https://serverless.roboflow.com/your-workspace/workflows/gemma-3-4b-captioning' \
--header 'Content-Type: application/json' \
--data '{
  "api_key": "YOUR_API_KEY",
  "inputs": {
    "image": {"type": "url", "value": "IMAGE_URL"}
  }
}'

Gemma 3 4B License

Custom License · Model-specific license

Gemma 3 4B ships under a custom, model-specific license rather than a standard permissive or restrictive one, so the Gemma 3 4B license has to be read directly. Custom model licenses range from effectively permissive to research-only.

Commercial use
Varies. Custom model licenses commonly restrict commercial use, cap monthly active users, or carve out specific industries — check the Gemma 3 4B terms before you build on it.
Modification
Usually permitted for fine-tuning, but check whether derivative weights inherit the same license and naming requirements.
Redistribution
Often restricted. Look for attribution, naming, and acceptable-use requirements that apply to any copy you share.

Uncertainty around licensing can delay or stop a project, and acceptable-use policies attached to custom licenses are binding terms rather than guidance. Review them alongside the Gemma 3 4B license before production deployment.

Do I need a commercial license for Gemma 3 4B?

If the custom terms rule out your use case, a commercial license from the rights holder is the way through. Roboflow's licensing page lists the supported models whose commercial license is included in a Roboflow plan, so it is worth checking whether Gemma 3 4B — or a permissively licensed alternative — fits your deployment.

Do not hesitate to reach out with questions for your commercial project. Our team will help you start solving business problems on the first call. See Roboflow commercial licensing for the models included in each plan.

Talk to sales

Custom licenses are model-specific. Always check the per-model License Notes section above and the linked official license text.

License information is provided as a guide and is not legal advice.

Gemma 3 4B Details

Details

Categoryopen
ModalityMultimodal
Context Window128K
Parameters4B
LicenseCustom
Release DateMar 2025

Vision Tasks

CaptioningChart Question AnsweringClassificationDocument Question AnsweringImage TaggingMulti-Label ClassificationOCRVision LanguageVisual Question Answering

Usage

Past 30 Days

Price vs. performance

Estimated cost per task vs. Visual Understanding score, for this model and others ranked near it. Upper-left is the sweet spot (high quality, low cost). Based on Vision Evals (legacy) results.

6 of 7 models plotted · 1 not yet evaluated

ModelScoreMedian tokensEst. cost / taskCompare
AnthropicClaude Haiku 4.558.2%2.3K$0.0030Compare
OpenAIGPT-5 Nano58.2%2.7K$0.0003Compare
QwenQwen3.5 397B A17B58.2%1.5K$0.0009Compare
GoogleGemini 2.5 Flash55.2%476$0.0005Compare
GoogleGemini 2.5 Flash-Lite53.7%301<$0.0001Compare
GoogleGemma 3 4B(this model)37.3%———
MoonshotAIKimi K2.535.8%2.7K$0.0034Compare

Frequently Asked Questions About Gemma 3 4B Vision

Yes. Gemma 3 4B accepts image input, and on Roboflow's previous vision benchmark it passed 37.3% of visual understanding tasks (#73 of 77) and scored 64.2% on OCR. You can test it on your own image in the demo above.

Yes. The demo on this page runs Gemma 3 4B in the free Roboflow Playground: upload an image and see results in seconds. A free account unlocks unlimited runs.