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  5. Claude 2vsGPT-4o (Omni)
Updated May 2024

Claude 2vsGPT-4o (Omni)

GPT-4o (Omni) is cheaper than Claude 2 at $2.5/M vs $11.02/M input tokens.

Claude 2 and GPT-4o (Omni) compared across 5 shared prompts
SpecClaude 2GPT-4o (Omni)
Input price$11.02/M tokens$2.5/M tokens
Output price$32.68/M tokens$10/M tokens
Context window100K tokens128K tokens
ParametersNot disclosedNot disclosed
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedJun 2023May 2024
MMLU78.5% (5-shot)88.7%
Our Verdict
GPT-4o (Omni)
GPT-4o (Omni)
Claude 2
Claude 2Runner-up

Not enough votes to call it. On the specs, GPT-4o (Omni) has the edge: bigger model tier, newer.

GPT-4o (Omni) costs 3.3x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude 2
Input
$11.02
Output
$32.68
GPT-4o (Omni)
Input
$2.50
4.4× cheaper
Output
$10.00
3.3× cheaper

GPT-4o (Omni) is cheaper on both: 4.4× input, 3.3× output.

Where to run it

2 hosts

Claude 2

No hosts listed on OpenRouter.

GPT-4o (Omni)2 hosts
HostInOutContextUptime
Azure AI Foundry$2.50 in·$10.00 out·128k·99.9% upOpenAI$2.50 in·$10.00 out·128k·99.9% up

Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.

Writing DNA

Style Comparison

Similarity
50%

GPT-4o (Omni) uses 72.0x more hedging

Claude 2
GPT-4o (Omni)
65%Vocabulary54%
13wSentence Length18w
0.00Hedging0.72
0.0Bold7.3
10.2Lists5.6
0.00Emoji0.03
0.00Headings1.40
0.00Transitions0.26
Based on 2 + 24 text responses
Research

What we learned reading every model

FAQ

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