Laguna XS 2.1 (free) vs 
GPT-1
Laguna XS 2.1 (free) has a larger context window than GPT-1 (262K tokens vs 1K tokens).
World Map SVG
Continents in SVG, five countries labelled. Geography from memory.
Loading the build
Loading the build
Which answer wins?
Written rounds
2 promptsFive jokes on demand, then count how many were actually different.
Laguna XS 2.1 (free): Here are 5 jokes: Pun: Why don’t scientists trust atoms? Because they make up everything! Knock-knock: Knock knock. Who’s there? Lettuce. Lettuce who? Lettuce in, it’s cold out here! One-liner: I told my wife she was drawing her eyebrows too high. She looked surprised. Math joke: Why was 6 afraid of 7? Because 7, 8, 9!
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 '?
Three minutes of stand-up. Puns are banned.
Laguna XS 2.1 (free): [Opening] Walks on stage, adjusts mic "So, I’ve been trying to disconnect from technology lately. Which is funny, because my phone is literally trying to disconnect from me. It keeps showing me this little red badge that says, ‘Battery at 5%.’
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.
Price and specs
Not enough votes to call it. On the specs, Laguna XS 2.1 (free) has the edge: bigger model tier, newer, bigger context window.
| Spec | Laguna XS 2.1 (free) | GPT-1 |
|---|---|---|
| Input price | Free | — |
| Output price | Free | — |
| Context window | 262K tokens | 1K tokens |
| Weights | — | Open |
| Free API (OpenRouter) | Yes (1 provider) | — |
| Released | Jul 2026 | Jun 2018 |
| At 10M a month | $0 | not listed |
Input tokens at list price. No caching, no batch discount.
Where to run it
Laguna XS 2.1 (free)1 host
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 Laguna XS 2.1 (free) and GPT-1?
Laguna XS 2.1 (free) is developed by Poolside while GPT-1 is developed by OpenAI. Laguna XS 2.1 (free) has a 262K token context window vs GPT-1's 1K. You can compare their actual outputs across 4 challenges on Rival to see how they differ in practice.
Which is better, Laguna XS 2.1 (free) or GPT-1?
It depends on your use case. Laguna XS 2.1 (free) and GPT-1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 4 challenges so you can judge which fits your needs best.
How can I compare Laguna XS 2.1 (free) and GPT-1 on Rival?
This page shows a side-by-side comparison of Laguna XS 2.1 (free) 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.
More comparisons
Against the newest arrivals
- Laguna XS 2.1 (free) vs Solar Mini 4Landed Sep 2026
- GPT-1 vs Qwen3.8 Max PrimeLanded Sep 2026
- Laguna XS 2.1 (free) vs GLM 5.3 PrimeLanded Sep 2026
- GPT-1 vs Qwen3.8 Omni FlashLanded Sep 2026
- Laguna XS 2.1 (free) vs Command A+Landed Sep 2026
- GPT-1 vs Claude Opus 5.5Landed Sep 2026
- Laguna XS 2.1 (free) vs GPT-6 Luna ProLanded Sep 2026
- GPT-1 vs GPT-6 Sol ProLanded Sep 2026
Same lab, same size, long tail
- Laguna XS 2.1 (free) vs Laguna S 2.1 (free)Same lab
- Laguna XS 2.1 (free) vs Ox AlphaSame size
- GPT-1 vs GPT-6 Luna ProSame lab
- GPT-1 vs GPT-6 LunaSame lab
- GPT-1 vs Aurora AlphaNew provider
- Laguna XS 2.1 (free) vs Bert-Nebulon AlphaSame size
- Laguna XS 2.1 (free) vs ChatGPT-4o (March 2025)Cross-provider
- Laguna XS 2.1 (free) vs Claude 2Same size
