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Gemma 4 31B

google/gemma-4-31b-it:free

Gemma 4 31B Instruct is Google DeepMind's 30.7B dense multimodal model supporting text and image input with text output. Features a 256K token context window, configurable thinking/reasoning mode, native function...

Listed free

Free Model independently observes this OpenRouter route. It does not proxy requests or store your key.

Availability by tested scope

A result applies only to the interface, modality, region, and account cohort shown.

Listed free

openai-chat-completions / text / global / free-account-no-purchase

Evidence checked:

Image input is listed, but vision inference is not independently tested.

Access conditions

Review these requirements before copying the request.

Account
OpenRouter account required
API key
Required
Payment method
Not required
Regions
Unknown
Free type
Zero-price route

Use this route

Call OpenRouter directly with the exact route ID shown on this page.

  1. 1Create or sign in to your OpenRouter account.
  2. 2Create an API key in OpenRouter settings.
  3. 3Store the key as OPENROUTER_API_KEY in your environment.
  4. 4Run one of the examples below with the exact model ID.
Model ID
google/gemma-4-31b-it:free
Base URL
https://openrouter.ai/api/v1
Open this route on OpenRouter

Copy-ready request

Every language uses the same endpoint, model ID, prompt, and token limit.

Request parameters reviewed from source: . This source review is not proof of runtime success.

curl 'https://openrouter.ai/api/v1/chat/completions' \
  -H "Authorization: Bearer ${OPENROUTER_API_KEY}" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemma-4-31b-it:free","messages":[{"role":"user","content":"Reply with exactly: free-model-ok"}],"max_completion_tokens":16}'

Evidence history

Catalog observations and real probes remain separate and append-only.

  1. Official catalog observation

    Listed in the official OpenRouter catalog as a free route.

    Scope: openai-chat-completions / text / global / free-account-no-purchase

    Open primary source

Source last observed: Jul 15, 2026, 1:40 AM

Recent changes

Published directory changes for this exact OpenRouter route.

View all changes

  1. Added

    Gemma 4 31B was added from the official OpenRouter catalog.

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cognitivecomputations/dolphin-mistral-24b-venice-edition:free

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Evidence: Official catalog observation

Checked:

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Context and modalities

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North Mini Code

cohere/north-mini-code:free

Cohere · OpenRouter

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Evidence: Official catalog observation

Checked:

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API key required

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Gemma 4 26B A4B

google/gemma-4-26b-a4b-it:free

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Evidence: Official catalog observation

Checked:

Access

API key required

Zero-price route

Context and modalities

131K

Image, Text, Video