Google

Gemini 3.1 Pro Preview Custom Tools

google/gemini-3.1-pro-preview-customtools
Released Feb 25, 2026Commercial
ThinkingToolsVisionAudiocommercial cloud

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...

Cost / 1M tokens

High usage

$2.00

input

$0.20

cached input

$12.00

output

Context Window

1M

Up to 66K max output

Modalities

text, audio, image, video, file → text

Gemini tokenizer

Quickstart & API

google/gemini-3.1-pro-preview-customtools
Open the model picker in ChatOSS Desktop (Code, Kanban, or Chat) and select or paste this model ID.

Best for & Strengths

Key Strengths

Extended reasoningTool & agent callingMultimodal vision1M+ token context

Recommended Workloads in ChatOSS

  • Coding agents
  • Complex reasoning & debugging
  • Screenshot-to-code workflows
Available in ChatOSS Code, Kanban Orchestrate, and Chat modes via Plus, Max, or BYOK.

Active Provider Endpoints (1)

Upstream inference providers serving Gemini 3.1 Pro Preview Custom Tools, with per-provider pricing, context limits, quantization, and 24-hour uptime.

ProviderInput / 1MOutput / 1MCache Read / 1MContextMax OutputQuantizationUptime (24h)
Google AI Studio
google-ai-studio
$2.00$12.00$0.201M66K—100.0%

Supported API Parameters

Parameters accepted by this model when called through ChatOSS or OpenRouter.

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_p

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