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  5. Claude 3.7 SonnetvsGPT-4o mini
Updated Feb 2025

Claude 3.7 SonnetvsGPT-4o mini

GPT-4o mini is cheaper than Claude 3.7 Sonnet at $0.15/M vs $3/M input tokens.

Claude 3.7 Sonnet and GPT-4o mini compared across 54 shared prompts
SpecClaude 3.7 SonnetGPT-4o mini
Input price$3/M tokens$0.15/M tokens
Output price$15/M tokens$0.6/M tokens
Context window200K tokens128K tokens
ParametersNot disclosedNot disclosed
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedFeb 2025Jul 2024
MMLU80.3%82%
Our Verdict
Claude 3.7 Sonnet
Claude 3.7 Sonnet
GPT-4o mini
GPT-4o miniRunner-up

Not enough votes to call it. On the specs, Claude 3.7 Sonnet has the edge: bigger model tier, newer, bigger context window.

GPT-4o mini costs 25x less per token.

Slight edge
API pricing

Cost per 1M tokens

Claude 3.7 Sonnet
Input
$3.00
Output
$15.00
GPT-4o mini
Input
$0.15
20× cheaper
Output
$0.60
25× cheaper

GPT-4o mini is cheaper on both: 20× input, 25× output.

Where to run it

2 hosts

Claude 3.7 Sonnet

No hosts listed on OpenRouter.

GPT-4o mini2 hosts
HostInOutContextUptime
Azure AI Foundry$0.15 in·$0.60 out·128k·99.7% upOpenAI$0.15 in·$0.60 out·128k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.

Writing DNA

Style Comparison

Similarity
73%

GPT-4o mini uses 1.9x more bold

Claude 3.7 Sonnet
GPT-4o mini
61%Vocabulary53%
33wSentence Length19w
0.83Hedging0.82
2.2Bold4.0
4.9Lists3.7
0.00Emoji0.00
1.78Headings1.04
0.16Transitions0.22
Based on 26 + 24 text responses
Research

What we learned reading every model

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