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Google: Gemma 4 31B (free) Free API on OpenRouter

Free API Verified
Available from OpenRouter
★★★★★★★★★★ 3.5 Benchmark-backed score

Largest Gemma 4 instruction model for open, self-hosted chat and reasoning

Free APIOpenAI compatibleReasoningTool callingJSON modeTextImage
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API Details

Copy-ready connection details

Use these values in your client or SDK.
Base URL
https://openrouter.ai/api/v1
Model ID
google/gemma-4-31b-it:free
API format OpenAI Chat Completions + OpenAI Responses
Technical Details

Google: Gemma 4 31B (free) specifications

Provider and model catalog
Context window 262K
Max output 33K
Status Online
Family gemma
Released Apr 2, 2026
Last updated Aug 6, 2026
Free listing since Apr 2, 2026
Input text, image
Output text
Capabilities reasoning, tool calling, structured output, file attachments, temperature control
Open weights Yes
Weights Hugging Face
AI Recommendation

Should you use Google: Gemma 4 31B (free)?

Google: Gemma 4 31B (free) is listed for chat workloads and supports a 262K context window.

Use it when OpenRouter's free tier is enough for evaluation, demos, or light production traffic.

Best for
  • Chat
Strengths & Weaknesses

Strengths

  • Long context window
  • Reasoning mode listed
  • Tool calling support
  • Structured JSON output

Watch outs

  • Free-tier rate limits apply
Benchmark Overview

Benchmark signals for Google: Gemma 4 31B (free)

Measured data
Intelligence General reasoning and instruction following
29.4/100
Coding Programming and code generation
43.4/100
Agentic Tool use and multi-step tasks
14.4/100
Speed Observed generation speed
35 tok/s
Context Maximum listed context window
262K
Pricing

Google: Gemma 4 31B (free) pricing per 1M tokens

Free tier listed
Input $0 per 1M tokens
Output $0 per 1M tokens
Free access Available OpenRouter
Rate limit 200 req/day (free tier) provider policy
Typical Use Cases

Google: Gemma 4 31B (free) use cases

Chat

Google: Gemma 4 31B (free) is tagged for chat in this catalog and works with OpenAI-compatible client libraries.

FAQ

Google: Gemma 4 31B (free) free API FAQ

Is Google: Gemma 4 31B (free) free to use?

Google: Gemma 4 31B (free) is listed with free API access on OpenRouter, subject to the provider's quota and account policy.

What is the Google: Gemma 4 31B (free) model ID?

The model ID shown in this catalog is google/gemma-4-31b-it:free.

What are the Google: Gemma 4 31B (free) free tier rate limits on OpenRouter?

The listed free tier limit is 200 req/day (free tier). Limits can change per account tier, so confirm against the provider dashboard.

What context window does Google: Gemma 4 31B (free) support?

The listed context window is 262K tokens with up to 33K output tokens.

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More about Google: Gemma 4 31B (free)

Google Gemma 4 31B is a dense 30.7B-parameter multimodal model from Google DeepMind, available free on OpenRouter. Supports text and image input with a 262K context window. Strong on coding, reasoning, and document understanding tasks. Includes native function calling, configurable thinking/reasoning mode, and multilingual support across 140+ languages. Apache 2.0 license. OpenAI-compatible via OpenRouter. Free tier: 200 RPD.

For API keys, setup steps, and provider-level limits, see the OpenRouter provider page.