Claude 3 Opus vs O1 Preview

Performance benchmarks + pricing comparison — updated April 2026

Claude 3 Opus

Anthropic

First generation Opus. Highest reasoning capability in the Claude 3 family.

Input	$15.00/M
Output	$75.00/M
Context	200K tokens
Best For	Deep analysis, complex coding tasks
Benchmark	78/100

OpenAI

OpenAI's first reasoning model. Strong at complex problem solving but expensive.

Input	$15.00/M
Output	$60.00/M
Context	128K tokens
Best For	Complex math, science, algorithm design

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

Scenario	Claude 3 Opus	O1 Preview	Savings
Small Script (1K lines)	$2.77	$2.32	O1 Preview saves $0.45 (16%)
Medium Feature (10K lines)	$20.25	$17.25	O1 Preview saves $3.00 (15%)
Large Project (50K lines)	$101.25	$86.25	O1 Preview saves $15.00 (15%)
Code Review (5K lines)	$4.50	$4.13	O1 Preview saves $0.38 (8%)

Claude 3 Opus wins on both price and performance — $15.00/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

Anthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.

Anthropic's most powerful model. Best for complex reasoning and challenging coding tasks.

Previous generation Sonnet. Still excellent for coding tasks at the same price point.

Fast, cost-effective model for high-volume tasks. Great for code review and simple queries.

First generation Sonnet. Balanced performance for general tasks.

Cheapest Claude model. Fast responses for simple tasks and basic coding.