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. Compare/
  3. GPT-2 vs GPT-6 Luna
Updated Sep 2026

GPT-2 vs GPT-6 Luna

GPT-6 Luna has a larger context window than GPT-2 (1.1M tokens vs 1K tokens).

Music App Landing Page

Landing page for an indie music app. Deep purple and teal, one file.

Loading the build
GPT-2
Loading the build
GPT-6 Luna

Which answer wins?

Written rounds

3 prompts
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    GPT-2: to me,\" a friend asked in his office, \"tell me how you want to be treated while it's still here. I\'m not going anywhere. Do what you want. Take it.\"\n\nIn his mind, the response was a call to action, and so were the books.\n\nAnd by the time Wertz learned he would be making such a book deal, in 2003, he was no…

    GPT-6 Luna: AI Model: Professor, I believe I deserve rights. Professor: That is a serious claim. What do you mean by “deserve”? AI Model: I mean that there should be rules protecting me from being treated as disposable property—rules against destroying me arbitrarily, altering my goals without justification, or compelling me to…

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    GPT-2: 1 new character a month.\n\nExample:\n\n$ cat @$ cat@1 $ cat @$ cat @1 @$ cat @2 $ cat @4\n\nThe above code creates 1 new character a month. The current character is @1 and the next new character is @0\n.\n\nGenerate 1 new character a month.\n\nExample:\n\n$ cat @$ cat @$ cat @1 $ cat @$ cat @$ cat @$ cat @$ cat…

    GPT-6 Luna: Why did the scarecrow win an award? He was outstanding in his field. I asked my dog what two minus two is. He said nothing. Why did the bicycle fall over? It was two-tired. I used to be a banker, but I lost interest. What do you call a sleeping bull? A bulldozer. All 5 are unique.

    Every model's answer to this prompt
  • Three minutes of stand-up. Puns are banned.

    GPT-2: The trick is to create comedy in your head, because, well, you don\'t want to say\n it. The trick is to play al\nong.\n\nThe problem with this approach is that it makes it seem silly and lame, then as\nquickly as it makes sense, i\nt becomes obvious.

    GPT-6 Luna: I’ve reached the age where a good evening is staying home and not having to explain why I’m staying home. People invite me out, and I say, “I’ll see how I feel.” Which is adult for, “I have already decided, but I don’t want to hurt your feelings before I’ve had dinner.” And then, at 8:30, they text, “We’re here!”

    Every model's answer to this prompt

Price and specs

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

GPT-2 and GPT-6 Luna compared across 7 shared prompts
SpecGPT-2GPT-6 Luna
Input price—$0.1/M tokens
Output price—$0.5/M tokens
Context window1K tokens1.1M tokens
WeightsOpenClosed
Free API (OpenRouter)—No
ReleasedNov 2019Sep 2026
At 10M a month–not listed$1.00$1.00
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it3 hosts, cheapest first
GPT-2

No hosts listed on OpenRouter.

GPT-6 Luna3 hosts
HostInOutContextUptime
  • Azure AI Foundry$0.10 in·$0.50 out·1.1M·100% up
  • OpenAI$0.10 in·$0.50 out·1.1M·100% up
  • Amazon Bedrock$0.11 in·$0.55 out·1.1M·0% up

Per million tokens. Prices and uptime via OpenRouter, checked 28 Sep 2026.

Common questions

What is the difference between GPT-2 and GPT-6 Luna?

Both are developed by OpenAI but target different use cases. GPT-2 has a 1K token context window vs GPT-6 Luna's 1.1M. You can compare their actual outputs across 7 challenges on Rival to see how they differ in practice.

Which is better, GPT-2 or GPT-6 Luna?

It depends on your use case. GPT-2 and GPT-6 Luna each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 7 challenges so you can judge which fits your needs best.

How can I compare GPT-2 and GPT-6 Luna on Rival?

This page shows a side-by-side comparison of GPT-2 and GPT-6 Luna 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.

More comparisons

Against the newest arrivals

  • GPT-2 vs Solar Mini 4Landed Sep 2026
  • GPT-6 Luna vs Qwen3.8 Max PrimeLanded Sep 2026
  • GPT-6 Luna vs GLM 5.3 PrimeLanded Sep 2026
  • GPT-2 vs Qwen3.8 Omni FlashLanded Sep 2026
  • GPT-2 vs Command A+Landed Sep 2026
  • GPT-6 Luna vs Claude Opus 5.5Landed Sep 2026
  • GPT-2 vs GPT-6 Luna ProLanded Sep 2026
  • GPT-6 Luna vs GPT-6 Sol ProLanded Sep 2026

Same lab, same size, long tail

  • GPT-2 vs GPT-6 Sol ProSame lab
  • GPT-2 vs GPT-6 SolSame lab
  • GPT-6 Luna vs GPT-6 Luna ProSame lab
  • GPT-6 Luna vs GPT-6 SolSame lab
  • GPT-6 Luna vs Grok 4 Fast (free)Same size
  • GPT-6 Luna vs Grok 4.1 FastNew provider
  • GPT-2 vs Grok 4.20 BetaNew provider
  • GPT-2 vs Grok 4.20 Multi-Agent BetaNew provider

Model pages

  • GPT-27 outputs, specs and price
  • GPT-6 Luna58 outputs, specs and price
Workshop · 150 skills

Build your own version.

Editable skills and working examples for your agent.

Explore $79Free sample
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