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  1. Home/
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  3. Laguna S 2.1 (free) vs Optimus Alpha
Updated Jul 2026

Laguna S 2.1 (free) vs Optimus Alpha

Optimus Alpha has a larger context window than Laguna S 2.1 (free) (1.0M tokens vs 262K tokens).

Minimalist Landing Page

Whole landing page for a startup that reads your face. It renders or it doesn't.

Loading the build
Laguna S 2.1 (free)
Loading the build
Optimus Alpha

Which answer wins?

Written rounds

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

    Laguna S 2.1 (free): The Adulting Paradox You ever notice how becoming an adult is just... disappointing? Like, we spend our whole childhood waiting to be grown-ups, and then it turns out adulthood is just... taxes and existential dread. When I was a kid, I thought adults had it all figured out.

    Optimus Alpha: Absolutely! Here's a 3-minute stand-up routine with no puns—just observational and relatable humor: You ever try to get healthy, but your body's like, "Whoa, whoa... calm down, superhero." I joined a gym—first time walking in, the treadmill looked at me like, "We both know you're here for the wifi."

    Every model's answer to this prompt
  • Film in 2035, with synthetic actors. Specific beats plausible.

    Laguna S 2.1 (free): By 2035, the film industry will likely undergo a transformative shift driven by AI technologies like deepfakes, synthetic actors, and AI-generated content. Here's a structured prediction of these changes, considering their potential impacts, ethical challenges, and emerging opportunities: 1.

    Optimus Alpha: By 2035, AI is set to fundamentally transform the film industry in several interconnected ways: 1. Deepfakes & AI-driven Visual Effects: Virtually unlimited creative freedom: AI-powered deepfakes will allow seamless, photorealistic de-aging, resurrection of deceased actors, and transformative performance capture.

    Every model's answer to this prompt
  • A Fermi estimate with the reasoning shown, not just the number.

    Laguna S 2.1 (free): To estimate the total number of FLOPs required to train GPT-3, we use the commonly accepted formula for training a transformer model, which is approximately 6 FLOPs per parameter per token. Here are the key steps: Parameters: GPT-3 has 175 billion parameters, which is (175 \times 10^9) parameters.

    Optimus Alpha: Let's walk through an estimation of how many FLOPs were required to train GPT-3, using only reasoning and not searching for the exact numbers. Step 1: Understand Model Size GPT-3 (the original) had 175 billion parameters.

    Every model's answer to this prompt

Price and specs

Laguna S 2.1 (free) and Optimus Alpha compared across 9 shared prompts
SpecLaguna S 2.1 (free)Optimus Alpha
Input priceFree—
Output priceFree—
Context window262K tokens1.0M tokens
Free API (OpenRouter)Yes (1 provider)—
ReleasedJul 2026Apr 2025
At 10M a month$0$0–not listed
1M10M100M1B10M tokens

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

Where to run it1 host
Laguna S 2.1 (free)1 host
HostInOutContextUptime
  • PPoolsidefp4$0 in·$0 out·262k·99.9% up
Optimus Alpha

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 30 Sep 2026.

Common questions

What is the difference between Laguna S 2.1 (free) and Optimus Alpha?

Laguna S 2.1 (free) is developed by Poolside while Optimus Alpha is developed by OpenRouter. Laguna S 2.1 (free) has a 262K token context window vs Optimus Alpha's 1.0M. You can compare their actual outputs across 9 challenges on Rival to see how they differ in practice.

Which is better, Laguna S 2.1 (free) or Optimus Alpha?

It depends on your use case. Laguna S 2.1 (free) and Optimus Alpha each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 9 challenges so you can judge which fits your needs best.

How can I compare Laguna S 2.1 (free) and Optimus Alpha on Rival?

This page shows a side-by-side comparison of Laguna S 2.1 (free) and Optimus Alpha 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)37 outputs, specs and price
  • Optimus Alpha19 outputs, specs and price
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