free-ai-api-keys

google/gemma-4-31b-it

Google: Gemma 4 31B

Context length
262K
Input / 1M tokens
$0.20
Output / 1M tokens
$0.40
Released
2026-04-02
Modality
text+image+video->text

About Google: Gemma 4 31B

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...

Call Google: Gemma 4 31B

Via OpenRouter: one base URL for every provider.

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",
    "messages": [{"role": "user", "content": "Say hello"}]
  }'

Direct on Google Gemini / AI Studio:

curl https://generativelanguage.googleapis.com/v1beta/chat/completions \
  -H "Authorization: Bearer $GEMINI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemma-4-31b-it",
    "messages": [{"role": "user", "content": "Say hello"}]
  }'

Google Gemini / AI Studio keys

OpenRouter keys

OpenRouter keys work for google/gemma-4-31b-it regardless of the upstream provider.