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Claude Opus 4.5 vs Gemini 3 Pro Preview (Comparative Analysis)

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Comparative Analysis: Claude Opus 4.5 vs. Gemini 3 Pro Preview
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Overview

Gemini 3 Pro Preview was released 6 days before Claude Opus 4.5.
Claude Opus 4.5Claude Opus 4.5
Gemini 3 Pro PreviewGemini 3 Pro Preview
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
200K
tokens
1M
tokens
Output Token Limit
Maximum output tokens this model can generate at once
64K
tokens
65.5K
tokens
Release Date
When this model first became publicly available
November 24th, 2025
November 18th, 2025

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
Claude Opus 4.5
Gemini 3 Pro Preview
Input Types
Supported input formats
📁File🖼️Image📝Text
📝Text🖼️Image📁File🎵Audio🎬Video
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 Opus 4.5 is roughly 2.5x more expensive compared to Gemini 3 Pro Preview for input tokens and roughly 2.1x more expensive for output tokens.
Claude Opus 4.5Claude Opus 4.5
Gemini 3 Pro PreviewGemini 3 Pro Preview
Input Token Cost
Cost per million input tokens
$5.00
per million tokens
$2.00
per million tokens
Output Token Cost
Cost per million outut tokens
$25.00
per million tokens
$12.00
per million tokens

Benchmarks

Compare relevant benchmarks between Claude Opus 4.5 and Gemini 3 Pro Preview.
Claude Opus 4.5Claude Opus 4.5
Gemini 3 Pro PreviewGemini 3 Pro Preview
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 Opus 4.5 and Gemini 3 Pro Preview unique.
Anthropic logoClaude Opus 4.5 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 200K token context window. Premium pricing at $5.00/M input and $25.00/M output tokens. Includes built-in content moderation for safer outputs. Released November 24th, 2025.
Google logoGemini 3 Pro Preview 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 November 18th, 2025.

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