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  5. Laguna S 2.1 (free)vso1
Updated Jul 2026

Laguna S 2.1 (free)vso1

Laguna S 2.1 (free) is cheaper than o1 at $0/M vs $15/M input tokens.

Laguna S 2.1 (free) and o1 compared across 10 shared prompts
SpecLaguna S 2.1 (free)o1
Input priceFree$15/M tokens
Output priceFree$60/M tokens
Context window262K tokens128K tokens
Weights—Closed
Free API (OpenRouter)Yes (1 provider)No
ReleasedJul 2026Dec 2024
Our Verdict
Laguna S 2.1 (free)
Laguna S 2.1 (free)
o1
o1Runner-up

Not enough votes to call it. On the specs, Laguna S 2.1 (free) has the edge: bigger model tier, newer, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Laguna S 2.1 (free)
Input
$0.000
Output
$0.000
o1
Input
$15.00
Output
$60.00
Where to run it

2 hosts

Laguna S 2.1 (free)1 host
HostInOutContextUptime
PPoolsidefp4$0 in·$0 out·262k·100% up
o11 host
HostInOutContextUptime
OpenAI$15.00 in·$60.00 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Laguna S 2.1 (free) is developed by Poolside while o1 is developed by OpenAI. Laguna S 2.1 (free) has a 262K token context window vs o1's 128K. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

It depends on your use case. Laguna S 2.1 (free) and o1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 10 challenges so you can judge which fits your needs best.

Laguna S 2.1 (free) costs $0/M input tokens and o1 costs $15/M input tokens. Laguna S 2.1 (free) is $15.00/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 Laguna S 2.1 (free) and o1 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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Model pages

Laguna S 2.1 (free) logo
Laguna S 2.1 (free)10 outputs, specs and price
o1 logo
o159 outputs, specs and price
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