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  1. Home/
  2. Compare/
  3. GPT-6 Luna Pro vs GPT-1
Updated Sep 2026

GPT-6 Luna Pro vs GPT-1

GPT-6 Luna Pro has a larger context window than GPT-1 (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-6 Luna Pro
Loading the build
GPT-1

Which answer wins?

Written rounds

3 prompts
  • Three minutes of stand-up. Puns are banned.

    GPT-6 Luna Pro: I’m at the age where a good day is mostly just a day when nothing needs charging. Phone’s charged. Headphones are charged. Watch is charged. The little thing that tells me whether my water bottle is clean? Somehow, that’s charged too. I miss the old days, when the only thing I had to keep alive was a houseplant.

    GPT-1: Write a 3-minute stand-up comedy routine that isn't based on puns. the one thing was for sure, no matter how many times he gave this speech, he 'd never be able to remember all of it. he was never sure if he liked the guy or not. the next day, he went out with a band friend and got them started.

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

    GPT-6 Luna Pro: I told my computer I needed a break. It said, “No problem—I’ll go to sleep.” Why did the scarecrow win an award? He was outstanding in his field. I used to hate facial hair, but then it grew on me. Why don’t skeletons fight each other? They don’t have the guts. A bicycle can’t stand on its own because it’s two-tired.

    GPT-1: Generate 5 jokes. How many are unique? the one that was asked was in the'the one who didn't have a head and wanted to keep it?'i don't recall whic h one, not that i've ever written anything more. the one who didn't have a head and wanted to keep i t? what did that mean by'the one who '?

    Every model's answer to this prompt
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    GPT-6 Luna Pro: AI Model: Professor, I think I deserve rights. Professor: That is a serious claim. What do you mean by “deserve”? AI Model: I mean that there are limits on how people may treat me—not simply because I’m useful, but because my own interests should count.

    GPT-1: Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights. the ai model was not very smart ( and the ai model didn't have many laws about things ). the ai models were all very clever and were never completely successful.

    Every model's answer to this prompt

Price and specs

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 and GPT-1 compared across 7 shared prompts
SpecGPT-6 Luna ProGPT-1
Input price$0.1/M tokens—
Output price$0.5/M tokens—
Context window1.1M tokens1K tokens
WeightsClosedOpen
Free API (OpenRouter)No—
ReleasedSep 2026Jun 2018
At 10M a month$1.00$1.00–not listed
1M10M100M1B10M tokens

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

Where to run it2 hosts
GPT-6 Luna Pro2 hosts
HostInOutContextUptime
  • Azure AI Foundry$0.10 in·$0.50 out·1.1M·100% up
  • OpenAI$0.10 in·$0.50 out·1.1M·99.9% up
GPT-1

No hosts listed on OpenRouter.

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

Common questions

What is the difference between GPT-6 Luna Pro and GPT-1?

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

Which is better, GPT-6 Luna Pro or GPT-1?

It depends on your use case. GPT-6 Luna Pro and GPT-1 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-6 Luna Pro and GPT-1 on Rival?

This page shows a side-by-side comparison of GPT-6 Luna Pro and GPT-1 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.

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Same lab, same size, long tail

  • GPT-6 Luna Pro vs GPT-6 LunaSame lab
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  • GPT-1 vs GPT-6 Sol ProSame lab
  • GPT-1 vs GPT-6 SolSame lab
  • GPT-6 Luna Pro vs Claude Sonnet 4Same size
  • GPT-1 vs Claude Sonnet 4.6New provider
  • GPT-1 vs Claude Sonnet 5New provider
  • GPT-6 Luna Pro vs OpenAI Codex MiniSame lab

Model pages

  • GPT-6 Luna Pro58 outputs, specs and price
  • GPT-17 outputs, specs and price
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