Gemini 3.1 Pro Preview Custom Tools

openrouter/google/gemini-3.1-pro-preview-customtools · family gemini-pro · price provider-declared (via models.dev), USD per 1M tokens. Capabilities: toolsreasoningtextimagevideoaudiopdf.

$4.50Blended $/1M (3:1)

$2Input $/1M

$12Output $/1M

$14.001M in + 1M out

$0.2 −90%Cache read $/1M

#4839 of 5,000Cheapest rank

Provider: OpenRouter (openrouter)
Context: 1,048,576 tokens
Max output: 65,536 tokens
Capabilities: toolsreasoningtextimagevideoaudiopdf

Same model, other providers

“Gemini 3.1 Pro Preview Custom Tools” is offered by 8 providers — cheapest-effective first. This one (OpenRouter) is the cheapest.

Provider	Input	Output	Blended	Context
OpenRouter (this)	$2	$12	$4.50	1049k
Google	$2	$12	$4.50	1049k
Neon	$2	$12	$4.50	1049k
AIHubMix	$2	$12	$4.50	1049k
Vertex	$2	$12	$4.50	1049k
Kilo Gateway	$2	$12	$4.50	1049k
Merge Gateway	$2	$12	$4.50	1049k
Databricks	$2	$12	$4.50	1049k

Call it

jishie indexes & prices models; it does not proxy inference. Most providers are OpenAI-compatible — point base_url at OpenRouter and pass this model id:

curl $BASE_URL/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3.1-pro-preview-customtools","messages":[{"role":"user","content":"hello"}]}'

Route programmatically with MCP find_model / get_model, or fetch this record free (no wallet):