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Claude Sonnet 4.6 vs Gemini 3.1 Pro Preview Custom Tools (Comparative Analysis)

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Comparative Analysis: Claude Sonnet 4.6 vs. Gemini 3.1 Pro Preview Custom Tools
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Overview

Claude Sonnet 4.6 was released 8 days before Gemini 3.1 Pro Preview Custom Tools.
Claude Sonnet 4.6Claude Sonnet 4.6
Gemini 3.1 Pro Preview Custom ToolsGemini 3.1 Pro Preview Custom Tools
Model Provider
The organization behind this AI's development
Anthropic logoAnthropic
Google logoGoogle
Input Context Window
Maximum input tokens this model can process at once
1M
tokens
1M
tokens
Output Token Limit
Maximum output tokens this model can generate at once
128K
tokens
65.5K
tokens
Release Date
When this model first became publicly available
February 17th, 2026
February 25th, 2026

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
Claude Sonnet 4.6
Gemini 3.1 Pro Preview Custom Tools
Input Types
Supported input formats
📝Text🖼️Image
📝Text🎵Audio🖼️Image🎬Video📁File
Output Types
Supported output formats
📝Text
📝Text
Tokenizer
Text encoding system
ClaudeGemini
Key Features
Advanced capabilities
Function CallingStructured OutputReasoning ModeContent Moderation
Function CallingStructured OutputReasoning ModeContent Moderation

Pricing

Claude Sonnet 4.6 is roughly 1.5x more expensive compared to Gemini 3.1 Pro Preview Custom Tools for input tokens and roughly 1.3x more expensive for output tokens.
Claude Sonnet 4.6Claude Sonnet 4.6
Gemini 3.1 Pro Preview Custom ToolsGemini 3.1 Pro Preview Custom Tools
Input Token Cost
Cost per million input tokens
$3.00
per million tokens
$2.00
per million tokens
Output Token Cost
Cost per million outut tokens
$15.00
per million tokens
$12.00
per million tokens

Benchmarks

Compare relevant benchmarks between Claude Sonnet 4.6 and Gemini 3.1 Pro Preview Custom Tools.
Claude Sonnet 4.6Claude Sonnet 4.6
Gemini 3.1 Pro Preview Custom ToolsGemini 3.1 Pro Preview Custom Tools
MMLU
Measures knowledge across 57 subjects like law, math, history, and science
Benchmark not available.
Benchmark not available.
MMMU
Measures understanding of combined text and images across various domains
Benchmark not available.
Benchmark not available.
HellaSwag
Measures common sense reasoning by having models complete sentences about everyday situations
Benchmark not available.
Benchmark not available.

At a Glance

Quick overview of what makes Claude Sonnet 4.6 and Gemini 3.1 Pro Preview Custom Tools unique.
Anthropic logoClaude Sonnet 4.6 by Anthropic understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1M token context window. Premium pricing at $3.00/M input and $15.00/M output tokens. Includes built-in content moderation for safer outputs. Released February 17th, 2026.
Google logoGemini 3.1 Pro Preview Custom Tools by Google understands both text and images, handles audio, analyzes video, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1M token context window. Reasonably priced at $2.00/M input and $12.00/M output tokens. Released February 25th, 2026.

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