Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. OpenAI Codex MinivsGPT-6 Luna Pro
Updated Sep 2026

OpenAI Codex MinivsGPT-6 Luna Pro

GPT-6 Luna Pro is cheaper than OpenAI Codex Mini at $0.1/M vs $1.5/M input tokens.

OpenAI Codex Mini and GPT-6 Luna Pro compared across 1 shared prompts
SpecOpenAI Codex MiniGPT-6 Luna Pro
Input price$1.5/M tokens$0.1/M tokens
Output price$6/M tokens$0.5/M tokens
Context window200K tokens1.1M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMay 2025Sep 2026
Our Verdict
GPT-6 Luna Pro
GPT-6 Luna Pro
OpenAI Codex Mini
OpenAI Codex MiniRunner-up

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

GPT-6 Luna Pro costs 12x less per token.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

OpenAI Codex Mini
Input
$1.50
Output
$6.00
GPT-6 Luna Pro
Input
$0.10
15× cheaper
Output
$0.50
12× cheaper

GPT-6 Luna Pro is cheaper on both: 15× input, 12× output.

Where to run it

2 hosts

OpenAI Codex Mini

No hosts listed on OpenRouter.

GPT-6 Luna Pro2 hosts
HostInOutContextUptime
Azure AI Foundry$0.10 in·$0.50 out·1.1M·100% upOpenAI$0.10 in·$0.50 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 Luna 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 Luna 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 Luna Pro costs $0.1/M input tokens. GPT-6 Luna Pro is $1.40/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 Luna 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

More comparisons

Against the newest arrivals

OpenAI Codex Mini logoSolar Mini 4 logo
OpenAI Codex Mini vs Solar Mini 4Landed Sep 2026
GPT-6 Luna Pro logoQwen3.8 Max Prime logo
GPT-6 Luna Pro vs Qwen3.8 Max PrimeLanded Sep 2026
GPT-6 Luna Pro logoGLM 5.3 Prime logo
GPT-6 Luna Pro vs GLM 5.3 PrimeLanded Sep 2026
GPT-6 Luna Pro logoQwen3.8 Omni Flash logo
GPT-6 Luna Pro vs Qwen3.8 Omni FlashLanded Sep 2026
OpenAI Codex Mini logoCommand A+ logo
OpenAI Codex Mini vs Command A+Landed Sep 2026
OpenAI Codex Mini logoClaude Opus 5.5 logo
OpenAI Codex Mini vs Claude Opus 5.5Landed Sep 2026
OpenAI Codex Mini logoGPT-6 Sol Pro logo
OpenAI Codex Mini vs GPT-6 Sol ProLanded Sep 2026
GPT-6 Luna Pro logoGPT-6 Luna logo
GPT-6 Luna Pro vs GPT-6 LunaLanded Sep 2026

Same lab, same size, long tail

OpenAI Codex Mini logoGPT-6 Luna logo
OpenAI Codex Mini vs GPT-6 LunaSame lab
OpenAI Codex Mini logoGPT-6 Sol logo
OpenAI Codex Mini vs GPT-6 SolSame lab
GPT-6 Luna Pro logoGPT-6 Sol Pro logo
GPT-6 Luna Pro vs GPT-6 Sol ProSame lab
GPT-6 Luna Pro logoGPT-6 Sol logo
GPT-6 Luna Pro vs GPT-6 SolSame lab
GPT-6 Luna Pro logoGLM 4.5 logo
GPT-6 Luna Pro vs GLM 4.5Same size
GPT-6 Luna Pro logoGLM 4.5 Air logo
GPT-6 Luna Pro vs GLM 4.5 AirSame size
GPT-6 Luna Pro logoGLM 4.6 logo
GPT-6 Luna Pro vs GLM 4.6New provider
GPT-6 Luna Pro logoGLM 4.7 logo
GPT-6 Luna Pro vs GLM 4.7Same size

Model pages

OpenAI Codex Mini logo
OpenAI Codex Mini10 outputs, specs and price
GPT-6 Luna Pro logo
GPT-6 Luna Pro20 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed