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  5. OpenAI Codex MinivsGPT-6 Sol Pro
Updated Sep 2026

OpenAI Codex MinivsGPT-6 Sol Pro

OpenAI Codex Mini is cheaper than GPT-6 Sol Pro at $1.5/M vs $2/M input tokens.

OpenAI Codex Mini and GPT-6 Sol Pro compared across 1 shared prompts
SpecOpenAI Codex MiniGPT-6 Sol Pro
Input price$1.5/M tokens$2/M tokens
Output price$6/M tokens$10/M tokens
Context window200K tokens1.1M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMay 2025Sep 2026
Our Verdict
GPT-6 Sol Pro
GPT-6 Sol Pro
OpenAI Codex Mini
OpenAI Codex MiniRunner-up

Not enough votes to call it. On the specs, GPT-6 Sol Pro has the edge: bigger model tier, newer, bigger context window.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

OpenAI Codex Mini
Input
$1.50
1.3× cheaper
Output
$6.00
1.7× cheaper
GPT-6 Sol Pro
Input
$2.00
Output
$10.00

OpenAI Codex Mini is cheaper on both: 1.3× input, 1.7× output.

Where to run it

2 hosts

OpenAI Codex Mini

No hosts listed on OpenRouter.

GPT-6 Sol Pro2 hosts
HostInOutContextUptime
Azure AI Foundry$2.00 in·$10.00 out·1.1M·99.9% upOpenAI$2.00 in·$10.00 out·1.1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Both are developed by OpenAI but target different use cases. OpenAI Codex Mini has a 200K token context window vs GPT-6 Sol Pro's 1.1M. You can compare their actual outputs across 1 challenges on Rival to see how they differ in practice.

It depends on your use case. OpenAI Codex Mini and GPT-6 Sol Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 1 challenges so you can judge which fits your needs best.

OpenAI Codex Mini costs $1.5/M input tokens and GPT-6 Sol Pro costs $2/M input tokens. OpenAI Codex Mini is $0.50/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of OpenAI Codex Mini and GPT-6 Sol Pro across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Keep exploring

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Same lab, same size, long tail

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Model pages

OpenAI Codex Mini logo
OpenAI Codex Mini10 outputs, specs and price
GPT-6 Sol Pro logo
GPT-6 Sol Pro20 outputs, specs and price
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