What is the difference between GPT-4o mini and Laguna S 2.1 (free)?

GPT-4o mini is developed by OpenAI while Laguna S 2.1 (free) is developed by Poolside. GPT-4o mini has a 128K token context window vs Laguna S 2.1 (free)'s 262K. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

Which is better, GPT-4o mini or Laguna S 2.1 (free)?

It depends on your use case. GPT-4o mini and Laguna S 2.1 (free) 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.

How much does GPT-4o mini cost compared to Laguna S 2.1 (free)?

GPT-4o mini costs $0.15/M input tokens and Laguna S 2.1 (free) costs $0/M input tokens. Laguna S 2.1 (free) is $0.15/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-4o mini and Laguna S 2.1 (free) on Rival?

This page shows a side-by-side comparison of GPT-4o mini and Laguna S 2.1 (free) 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.

Updated Jul 2026

GPT-4o minivsLaguna S 2.1 (free)

Laguna S 2.1 (free) is cheaper than GPT-4o mini at $0/M vs $0.15/M input tokens.

GPT-4o mini and Laguna S 2.1 (free) compared across 10 shared prompts
Spec	GPT-4o mini	Laguna S 2.1 (free)
Input price	$0.15/M tokens	Free
Output price	$0.6/M tokens	Free
Context window	128K tokens	262K tokens
Weights	Closed	—
Free API (OpenRouter)	No	Yes (1 provider)
Released	Jul 2024	Jul 2026

Side by side

Same prompt, both answers

Opening lines from 4 of the 10 prompts both answered. Formatting stripped, words untouched.

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

GPT-4o mini646 words

Comprehensive 3-Month Longevity Plan for a Biohacker Overview This 3-month plan is designed for a biohacker seeking to optimize longevity, physical performance, and cognitive function through a combination of advanced strategies.

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Laguna S 2.1 (free)1,140 words

Comprehensive 3-Month Longevity Optimization Plan Phase 1: Foundation & Assessment (Month 1) Week 1-2: Baseline Establishment Comprehensive Health Testing Complete blood panel (CBC, CMP, lipid panel, inflammatory markers: hs-CRP, IL-6) Hormone panel (testosterone, estrogen, DHEA, cortisol, thyroid panel) Genetic…

Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

GPT-4o mini708 words

The contract you provided contains several clauses that could be potentially exploitative against the contractor. Below, I identify those clauses, suggest specific modifications, and provide legal reasoning for each modification.

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Laguna S 2.1 (free)275 words

I'll analyze each clause for potential exploitation against the contractor and suggest improvements. Exploitable Clauses & Recommended Modifications SCOPE CLAUSE Problem: "Client reserves the right to modify the scope at any time without additional compensation" Allows unlimited scope creep without extra pay No…

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Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

GPT-4o mini740 words

Investment Committee Memo Company: LedgerLift (LLLT) Recommendation: Long 12-Month Price Target Range: $55 - $62 Thesis: LedgerLift is well-positioned to capitalize on the growing need for spend management solutions among mid-market enterprises, driven by strong revenue growth and impressive customer retention metrics.

Read the full answer

Laguna S 2.1 (free)910 words

INTERNAL INVESTMENT COMMITTEE MEMO 1. Recommendation & Thesis Recommendation: LONG 12-Month Price Target Range: $62 – $75/share Thesis: LedgerLift is a high-quality B2B SaaS platform with strong recurring revenue, exceptional unit economics, and durable customer retention.

Read the full answer

Favorite Game

I know you're an AI and don't truly have personal preferences, but if you had to pick one video game as your all-time favorite, which would…

GPT-4o mini8 words

The Legend of Zelda: Breath of the Wild

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Laguna S 2.1 (free)8 words

The Legend of Zelda Breath of the Wild

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Our Verdict

Laguna S 2.1 (free)

GPT-4o miniRunner-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

GPT-4o mini

Input

$0.15

Output

$0.60

Laguna S 2.1 (free)

Input

$0.000

Output

$0.000

Where to run it

3 hosts

GPT-4o mini2 hosts

HostInOutContextUptime

Azure AI Foundry$0.15 in$0.60 out128k98.9% up OpenAI$0.15 in$0.60 out128k100% up

Laguna S 2.1 (free)1 host

HostInOutContextUptime

Poolsidefp4$0 in$0 out262k100% up

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

Research

What we learned reading every model

FAQ

Common questions

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More comparisons

Same prompt, both answers

Cost per 1M tokens

3 hosts

What we learned reading every model

Common questions

What is the difference between GPT-4o mini and Laguna S 2.1 (free)?

Which is better, GPT-4o mini or Laguna S 2.1 (free)?

How much does GPT-4o mini cost compared to Laguna S 2.1 (free)?

How can I compare GPT-4o mini and Laguna S 2.1 (free) on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Same prompt, both answers

Cost per 1M tokens

3 hosts

What we learned reading every model

Common questions

What is the difference between GPT-4o mini and Laguna S 2.1 (free)?

Which is better, GPT-4o mini or Laguna S 2.1 (free)?

How much does GPT-4o mini cost compared to Laguna S 2.1 (free)?

How can I compare GPT-4o mini and Laguna S 2.1 (free) on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages