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Claude 3.5 Sonnet vs Claude Opus 4 (Comparative Analysis)

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Comparative Analysis: Claude 3.5 Sonnet vs. Claude Opus 4
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Overview

Claude 3.5 Sonnet was released 7 months before Claude Opus 4.
Claude 3.5 SonnetClaude 3.5 Sonnet
Claude Opus 4Claude Opus 4
Model Provider
The organization behind this AI's development
Anthropic logoAnthropic
Anthropic logoAnthropic
Input Context Window
Maximum input tokens this model can process at once
200K
tokens
200K
tokens
Output Token Limit
Maximum output tokens this model can generate at once
8.2K
tokens
32K
tokens
Release Date
When this model first became publicly available
October 22nd, 2024
May 22nd, 2025

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
Claude 3.5 Sonnet
Claude Opus 4
Input Types
Supported input formats
📝Text🖼️Image📁File
🖼️Image📝Text📁File
Output Types
Supported output formats
📝Text
📝Text
Tokenizer
Text encoding system
ClaudeClaude
Key Features
Advanced capabilities
Function CallingStructured OutputReasoning ModeContent Moderation
Function CallingStructured OutputReasoning ModeContent Moderation

Pricing

Claude 3.5 Sonnet is roughly 0.2x less expensive compared to Claude Opus 4 for input tokens and roughly 0.2x less expensive for output tokens.
Claude 3.5 SonnetClaude 3.5 Sonnet
Claude Opus 4Claude Opus 4
Input Token Cost
Cost per million input tokens
$3.00
per million tokens
$15.00
per million tokens
Output Token Cost
Cost per million outut tokens
$15.00
per million tokens
$75.00
per million tokens

Benchmarks

Compare relevant benchmarks between Claude 3.5 Sonnet and Claude Opus 4.
Claude 3.5 SonnetClaude 3.5 Sonnet
Claude Opus 4Claude Opus 4
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 3.5 Sonnet and Claude Opus 4 unique.
Anthropic logoClaude 3.5 Sonnet by Anthropic understands both text and images, can use external tools and APIs. It can handle standard conversations with its 200K 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 October 22nd, 2024.
Anthropic logoClaude Opus 4 by Anthropic understands both text and images, can use external tools and APIs, offers advanced reasoning. It can handle standard conversations with its 200K token context window. Premium pricing at $15.00/M input and $75.00/M output tokens. Includes built-in content moderation for safer outputs. Released May 22nd, 2025.

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