Gemini 3.1 Pro Preview Custom Tools

GOOGLE Developer Architecture Profile

Intelligence (ELO)1493Chatbot Arena Verified

Max Context1,048,576Tokens

API Cost / 1M$14.00Blended Prompt + Completion

Model Capabilities

Fictional
Drafting
Classification
Conversational
Top Tier
Coding & Logic

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...

Granular Pricing Matrix

Input Tokens (Prompt)$2.00 / 1M

Output Tokens (Completion)$12.00 / 1M

Pricing data via OpenRouter. Sync: 4/30/2026

Evaluate Competitors

VS Engine MatchupGemini 3.1 Pro Preview Custom Tools vs Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)VS Engine MatchupGemini 3.1 Pro Preview Custom Tools vs OpenAI: o3 Deep Research VS Engine MatchupGemini 3.1 Pro Preview Custom Tools vs OpenAI: GPT-4.1 Mini VS Engine MatchupGemini 3.1 Pro Preview Custom Tools vs Amazon: Nova Premier 1.0 VS Engine MatchupGemini 3.1 Pro Preview Custom Tools vs OpenAI: GPT-4o Search Preview VS Engine MatchupGemini 3.1 Pro Preview Custom Tools vs Google: Gemini 2.0 Flash Lite