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  5. GPT-5 MinivsOpenAI o4 Mini High
Updated Aug 2025

GPT-5 MinivsOpenAI o4 Mini High

GPT-5 Mini is cheaper than OpenAI o4 Mini High at $0.25/M vs $1.1/M input tokens.

GPT-5 Mini and OpenAI o4 Mini High compared across 54 shared prompts
SpecGPT-5 MiniOpenAI o4 Mini High
Input price$0.25/M tokens$1.1/M tokens
Output price$2/M tokens$4.4/M tokens
Context window—200K tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedAug 2025Apr 2025
SWE-bench Verified~70%68.1%
Our Verdict
GPT-5 Mini
GPT-5 Mini
OpenAI o4 Mini High
OpenAI o4 Mini High

Not enough votes to call it. On the specs, nothing separates them.

Too close to call
API pricing

Cost per 1M tokens

GPT-5 Mini
Input
$0.25
4.4× cheaper
Output
$2.00
2.2× cheaper
OpenAI o4 Mini High
Input
$1.10
Output
$4.40

GPT-5 Mini is cheaper on both: 4.4× input, 2.2× output.

Where to run it

3 hosts

GPT-5 Mini2 hosts
HostInOutContextUptime
Azure AI Foundry$0.25 in·$2.00 out·400k·99.9% upOpenAI$0.25 in·$2.00 out·400k·100% up
OpenAI o4 Mini High1 host
HostInOutContextUptime
OpenAI$1.10 in·$4.40 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.

Writing DNA

Style Comparison

Similarity
72%

OpenAI o4 Mini High uses 1.8x more emoji

GPT-5 Mini
OpenAI o4 Mini High
62%Vocabulary68%
22wSentence Length21w
0.21Hedging0.36
0.0Bold0.0
3.8Lists1.6
0.00Emoji0.02
0.00Headings0.00
0.04Transitions0.03
Based on 21 + 16 text responses
Research

What we learned reading every model

FAQ

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