Google: Gemini 3.1 Pro Preview Custom Tools

Google Gemini

gemini/gemini-3.1-pro-preview-customtools

Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...

Context

1.048576M

Input /1M

$2.00

Output /1M

$12.00

Latency (TTFT)

2,969ms

Pricing

Per 1M tokens, in USD

Input$2.00

Output$12.00

Cache read$0.20

Cache write (5m)$0.375

Specs

text inaudio inimage invideo infile intext out

TokenizerGemini

Max output tokens65,536

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_p

Where it ranks on price

Against 157 routable models

Input$2.00

Cheaper than 17% of routable models

Output$12.00

Cheaper than 14% of routable models

Benchmarks

No third-party benchmark data available for this model yet.

Call this model

Swap in your Mizan key — the request/response bodies are OpenAI chat-completion shaped.

cURL

curl https://api.app-mizan.com/v1/chat/completions \
  -H "Authorization: Bearer mizan_rt_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini/gemini-3.1-pro-preview-customtools",
    "messages": [{ "role": "user", "content": "Say hi in five words." }]
  }'

Models

Google: Gemini 3.1 Pro Preview Custom Tools

Google Gemini

gemini/gemini-3.1-pro-preview-customtools

Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...

Context

1.048576M

Input /1M

$2.00

Output /1M

$12.00

Latency (TTFT)

2,969ms

Pricing

Per 1M tokens, in USD

Input$2.00

Output$12.00

Cache read$0.20

Cache write (5m)$0.375

Specs

text inaudio inimage invideo infile intext out

TokenizerGemini

Max output tokens65,536

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_p

Where it ranks on price

Against 157 routable models

Input$2.00

Cheaper than 17% of routable models

Output$12.00

Cheaper than 14% of routable models

Benchmarks

No third-party benchmark data available for this model yet.

Call this model

Swap in your Mizan key — the request/response bodies are OpenAI chat-completion shaped.

cURL

curl https://api.app-mizan.com/v1/chat/completions \
  -H "Authorization: Bearer mizan_rt_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini/gemini-3.1-pro-preview-customtools",
    "messages": [{ "role": "user", "content": "Say hi in five words." }]
  }'