gemma-4-31b-it-free
Gemma 4 31B (free) is Google DeepMind’s 30.7B dense multimodal model with text, image and video input, a 256K context window, configurable reasoning and native function calling. This is the free tier served through OpenRouter: requests are rate-limited, the free version may be withdrawn at any time, and free providers may log prompts — use the paid version for production.
料金： 入力：100 万トークンあたり 0 クレジット（約 $0.00）、出力：100 万トークンあたり 0 クレジット（約 $0.00）。
今日はどんなお手伝いができますか？
このデモページにはクライアントの完全な記憶機能はありません。すべての機能をご利用いただくには、クライアントまたは CLI から接続してください。
Google のほかの AI モデル
Gemma 4 31B (free) is Google DeepMind’s 30.7B dense multimodal model with text, image and video input, a 256K context window, configurable reasoning and native function calling. This is the free tier served through OpenRouter: requests are rate-limited, the free version may be withdrawn at any time, and free providers may log prompts — use the paid version for production.
Gemma 4 31B (free) at a glance
Gemma 4 31B (free) is a chat model from Google. It accepts text, images and video as input and returns text, with a context window of up to 262K tokens.
Use it without hosting anything
The same key also works for the other chat, image, video and audio models on ModelFold.
Core Capabilities of Gemma 4 31B (free)
Up to 262K tokens of context
Keep long conversations, large documents and sizeable code in a single request, so the model can reason over the full material instead of fragments.
Understands images and video
Besides text, Gemma 4 31B (free) accepts images and video as input, so a single request can combine instructions with visual or other media.
Function calling
Gemma 4 31B (free) supports tool (function) calling: describe your functions in the request and the model returns structured calls your code can run — the basis for agents and integrations.
Reasoning mode
Gemma 4 31B (free) can produce reasoning before its final answer; in the Playground you can switch reasoning on or off to compare results.
Structured outputs
Ask for JSON that follows a schema (response_format), which makes extraction, classification and system integrations more reliable.
- 1
Step 1: Try it in the Playground
Open the Playground at the top of this page, type a prompt and see how Gemma 4 31B (free) responds before writing any code.
- 2
Step 2: Create an API key
Sign in to ModelFold and create an API key in the console. Keep it secret and send it as a Bearer token.
- 3
Step 3: Send a request
Call POST https://modelfold.ai/v1/chat/completions with "model": "gemma-4-31b-it-free" and your messages. Existing OpenAI-compatible SDKs work by changing the base URL and key.
- ✓
Step 4: Ship and monitor
Integrate the response into your product and check token usage and spend for every call in the console logs.
Screenshot and image understanding
Read screenshots, charts, diagrams and photos alongside text — for UI review, visual QA or turning images into structured data.
AI coding assistants
Generate, explain, debug and refactor code, review pull requests and work through multi-file changes in developer tools and IDE plugins.
High-volume pipelines
Run classification, extraction, rewriting and batch jobs at scale where cost per request matters.
Frequently Asked Questions
What is Gemma 4 31B (free)?⌄
Gemma 4 31B (free) is Google DeepMind’s 30.7B dense multimodal model with text, image and video input, a 256K context window, configurable reasoning and native function calling. This is the free tier served through OpenRouter: requests are rate-limited, the free version may be withdrawn at any time, and free providers may log prompts — use the paid version for production.
Which inputs does Gemma 4 31B (free) support?⌄
Gemma 4 31B (free) accepts text, images and video and returns text. Through ModelFold you can send text and images (OpenAI-style image_url content); in the Playground you can also attach documents, which are converted to text.
How long is the context window of Gemma 4 31B (free)?⌄
Up to 262K tokens, shared between your input and the model’s output.
Does Gemma 4 31B (free) support function calling?⌄
Yes. Gemma 4 31B (free) supports tools / function calling through the standard tools parameter of the chat completions API.
How is Gemma 4 31B (free) billed on ModelFold?⌄
This is the free version served through OpenRouter: calls are not charged, but they are rate-limited and the free version may be withdrawn at any time. Use the paid version of the model for production traffic.
| 入力 | 0 クレジット 1M tokens≈ $0.00 |
| 出力 | 0 クレジット 1M tokens≈ $0.00 |
トークン単位で課金し、入力と出力は別料金です。思考トークンは出力に含まれます。Playground でも同じ計算を使います。
API ドキュメントを見る →AI Agents · Claude Code / Cursor / Trae →curl https://modelfold.ai/v1/chat/completions \
-H "Authorization: Bearer $MODELFOLD_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"gemma-4-31b-it-free","messages":[{"role":"user","content":"Hello"}]}'