Model capability probe

Google: Gemini 3.1 Pro Preview Custom Tools | vision input

Whether Google: Gemini 3.1 Pro Preview Custom Tools supports vision input cannot be decided from the name alone. Check model ID google/gemini-3.1-pro-preview-customtools, provider Google, catalog params, modality, a lightweight runtime probe, and the error body together.

Model

google/gemini-3.1-pro-preview-customtools

Google: Gemini 3.1 Pro Preview Custom Tools

Provider

Google

32 models in catalog

Capability

vision input

vision-input

Catalog signal

catalog signal is likely

Context: 1,048,576

Capability probe summary

Model

google/gemini-3.1-pro-preview-customtools

Capability

vision-input

Catalog signal

catalog signal is likely

Read-only check. Detection data burns after 5 minutes.

How to judge this capability

Whether Google: Gemini 3.1 Pro Preview Custom Tools supports vision input cannot be decided from the name alone. Check model ID google/gemini-3.1-pro-preview-customtools, provider Google, catalog params, modality, a lightweight runtime probe, and the error body together.

Model: google/gemini-3.1-pro-preview-customtools
Provider: Google
Capability: vision input

How to prove it during checking

Read-only check. Detection data burns after 5 minutes.

Start with the catalog signal: catalog signal is likely, then verify with a real key in read-only mode.
The capability probe must bind model ID google/gemini-3.1-pro-preview-customtools; do not test another model from the same provider.
vision input · supports include_reasoning · supports max_tokens · supports reasoning · supports response_format

Next action

Google: Gemini 3.1 Pro Preview Custom Tools vision input should turn into an operator action: confirm sale tags, fill the capability matrix, change route, suggest a fallback model, or mark unsupported for now.

Read-only check. Detection data burns after 5 minutes.
Catalog signal: catalog signal is likely
Context: 1,048,576

Open key checker

Read-only check. Detection data burns after 5 minutes.

Open models

Google: Gemini 3.1 Pro Preview Custom Tools

Open providers

Google