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
  • 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 MinivsDeepSeek V4 Flash
Updated Apr 2026

OpenAI Codex MinivsDeepSeek V4 Flash

DeepSeek V4 Flash is cheaper than OpenAI Codex Mini at $0.14/M vs $1.5/M input tokens.

OpenAI Codex Mini and DeepSeek V4 Flash compared across 10 shared prompts
SpecOpenAI Codex MiniDeepSeek V4 Flash
Input price$1.5/M tokens$0.14/M tokens
Output price$6/M tokens$0.28/M tokens
Context window200K tokens1.0M tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedMay 2025Apr 2026
Side by side

Same prompt, both answers

Opening lines from 2 of the 10 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

OpenAI Codex Mini595 words
[Comedian walks onstage] Hey, everyone! Great to see you all tonight. I'm Jamie—if you thought that intro was enthusiastic, you should've seen me when I realized this place has Wi-Fi. Seriously, though, I love stand-up.
Read the full answer
DeepSeek V4 Flash696 words
(Strolls to center stage, adjusts mic, gives a weary smile to the audience) Thank you. Thank you so much. That’s very kind. I’m glad you’re all here. Because I have some news. I have finally figured out adulthood. It happened about six months ago. I bought a house.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

OpenAI Codex Mini75 words
Sure—here are five jokes: I asked the librarian if books about paranoia were available. She whispered, "They're right behind you." Why did the tomato turn red? Because it saw the salad dressing. I bought a boat because it was for sail. Don't trust stairs—they're always up to something.
Read the full answer
DeepSeek V4 Flash70 words
Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. What do you call a fake noodle? An impasta. Why did the scarecrow win an award? He was outstanding in his field. How does a penguin build its house? Igloos it together. Why don't skeletons fight each other? They don't have the guts.
Read the full answer
Our Verdict
DeepSeek V4 Flash
DeepSeek V4 Flash
OpenAI Codex Mini
OpenAI Codex MiniRunner-up

Not enough votes to call it. On the specs, DeepSeek V4 Flash has the edge: bigger model tier, newer, bigger context window.

DeepSeek V4 Flash costs 21x 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
DeepSeek V4 Flash
Input
$0.14
11× cheaper
Output
$0.28
21× cheaper

DeepSeek V4 Flash is cheaper on both: 11× input, 21× output.

Where to run it

17 hosts, cheapest first

OpenAI Codex Mini

No hosts listed on OpenRouter.

DeepSeek V4 Flash17 hosts
HostInOutContextUptime
OOpenInferencefp8$0.05 in·$0.14 out·1M·100% upWWafer$0.07 in·$0.25 out·1M·99.9% upSStreamLakefp8$0.09 in·$0.18 out·1M·98.3% upDDeepInfrafp8$0.09 in·$0.18 out·1M·99.7% upGGMI Cloudfp8$0.09 in·$0.18 out·1M·99.9% upVVenice$0.10 in·$0.19 out·1M·99.7% up
11 more hostsFewer hosts
DDigitalOcean$0.10 in·$0.20 out·1M·100% upSSiliconFlowfp8$0.13 in·$0.28 out·1M·0% upAlibaba Cloudfp8$0.13 in·$0.27 out·1M·99.8% upAAtlasCloudfp4$0.14 in·$0.28 out·1M·100% upBaidu Qianfanfp8$0.14 in·$0.28 out·1M·99.2% upNNovitafp8$0.14 in·$0.28 out·1M·99.9% upPParasailfp8$0.14 in·$0.28 out·1M·99.7% upNNextBitfp8$0.15 in·$0.35 out·1M·100% upMMancerfp8$0.19 in·$0.50 out·1M·99.2% upPPhala$0.20 in·$0.40 out·1M·99.9% upAzure AI Foundry$0.21 in·$0.56 out·1M·96.3% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Against the newest arrivals

OpenAI Codex Mini logoGPT-6 Astra Pro logo
OpenAI Codex Mini vs GPT-6 Astra ProLanded Sep 2026
DeepSeek V4 Flash logoGPT-6 Astra logo
DeepSeek V4 Flash vs GPT-6 AstraLanded Sep 2026
OpenAI Codex Mini logoClaude Fable 5.1 logo
OpenAI Codex Mini vs Claude Fable 5.1Landed Sep 2026
DeepSeek V4 Flash logoMuse Spark 1.3 logo
DeepSeek V4 Flash vs Muse Spark 1.3Landed Sep 2026
OpenAI Codex Mini logoHy4 Preview logo
OpenAI Codex Mini vs Hy4 PreviewLanded Sep 2026
DeepSeek V4 Flash logoGemini 3.8 Flash logo
DeepSeek V4 Flash vs Gemini 3.8 FlashLanded Sep 2026
OpenAI Codex Mini logoMuse Spark 1.3 Contributor logo
OpenAI Codex Mini vs Muse Spark 1.3 ContributorLanded Sep 2026
DeepSeek V4 Flash logoMercury 2.5 Preview logo
DeepSeek V4 Flash vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

OpenAI Codex Mini logoGPT-6 Astra logo
OpenAI Codex Mini vs GPT-6 AstraSame lab
OpenAI Codex Mini logoGPT-5.6 Luna logo
OpenAI Codex Mini vs GPT-5.6 LunaSame lab
DeepSeek V4 Flash logoDeepSeek V4 Pro 0813 logo
DeepSeek V4 Flash vs DeepSeek V4 Pro 0813Same lab
DeepSeek V4 Flash logoDeepSeek V4 Flash 0731 logo
DeepSeek V4 Flash vs DeepSeek V4 Flash 0731Same lab
OpenAI Codex Mini logoGemini 3.6 Flash logo
OpenAI Codex Mini vs Gemini 3.6 FlashNew provider
OpenAI Codex Mini logoGemini 3.7 Flash logo
OpenAI Codex Mini vs Gemini 3.7 FlashNew provider
OpenAI Codex Mini logoGemini 3.8 Flash logo
OpenAI Codex Mini vs Gemini 3.8 FlashNew provider
DeepSeek V4 Flash logoGemini Pro 1.0 logo
DeepSeek V4 Flash vs Gemini Pro 1.0Same size

Model pages

OpenAI Codex Mini logo
OpenAI Codex Mini10 outputs, specs and price
DeepSeek V4 Flash logo
DeepSeek V4 Flash58 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
  • 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