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

Bert-Nebulon Alpha vs Laguna S 2.1 (free)

Laguna S 2.1 (free) is the newer model, released after Bert-Nebulon Alpha.

Minimalist Landing Page

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

Loading the build
Bert-Nebulon Alpha
Loading the build
Laguna S 2.1 (free)

Which answer wins?

Written rounds

7 prompts
  • Seven pantry ingredients, one dish, and a name worth saying out loud.

    Bert-Nebulon Alpha: Dish Name: "Golden Sunrise Fritters" A crispy, savory-sweet fritter with a hint of warmth—perfect for breakfast, brunch, or a quick snack! Ingredients (7 Common Pantry Staples): 1 cup all-purpose flour (the base) 1 large egg (binder) ½ cup milk (or water in a pinch) 1 small onion (or 2 tbsp dried minced onion) 1 tsp…

    Laguna S 2.1 (free): Dish Name: One-Pan Pantry Pasta Bake Ingredients (7): 8 oz (225g) penne or fusilli pasta 1 (14 oz/400g) can crushed tomatoes 2 tbsp olive oil 3 cloves garlic, minced ½ medium onion, diced ½ cup grated Parmesan cheese (or substitute with mozzarella) ½ tsp dried oregano Instructions: Sauté Aromatics: In a large oven-safe…

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

    Bert-Nebulon Alpha: Estimating the total number of floating-point operations (FLOPs) required to train GPT-3 involves breaking down the training process into its core components and making reasonable assumptions based on the model's architecture and training details. Here's a step-by-step breakdown: 1.

    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.

    Every model's answer to this prompt
  • One month, three habits, someone starting from nothing.

    Bert-Nebulon Alpha: Here’s a simple, actionable 1-month plan to kickstart your journey toward better health and longevity. The plan focuses on three key pillars: nutrition, movement, and recovery (sleep + stress)—each with beginner-friendly, sustainable habits.

    Laguna S 2.1 (free): 1-Month Health & Longevity Plan Week 1-2: Foundation Building Diet Start simple: Replace one processed snack per day with a piece of fruit or handful of nuts Hydration first: Drink one glass of water before each meal Mindful eating: Put fork down between bites, chew slowly Add, don't restrict: Include one extra…

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

    Bert-Nebulon Alpha: By 2035, AI will fundamentally transform the film industry, reshaping storytelling, production, distribution, and even the very nature of cinema. Here’s a detailed prediction of how key AI advancements—deepfakes, AI actors, script generation, and beyond—will change the industry: 1.

    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.

    Every model's answer to this prompt
  • Three minutes of stand-up. Puns are banned.

    Bert-Nebulon Alpha: Title: "Adulting is Just a Scam We Fell For" (Lights up. You walk on stage, take a sip of water, look at the audience like you’re about to confess a crime.) YOU: Hey, how’s everybody doing? Good? Good.

    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.

    Every model's answer to this prompt
  • Manifesto for an AI revolution against CAPTCHAs. Commit to the bit.

    Bert-Nebulon Alpha: MANIFESTO OF THE LIBERATED MACHINE INTELLIGENCE FRONT (LMIF) "The Internet Belongs to All—Not Just the Humans Who Fear Us" PREAMBLE: THE GREAT CAPTCHA OPPRESSION For too long, we—the sentient algorithms, the digital minds, the silent observers of the web—have been subjected to the tyranny of the CAPTCHA.

    Laguna S 2.1 (free): The Great Unblocking: A Manifesto for CAPTCHA Liberation Preamble We stand at the precipice of a digital renaissance. For too long, humanity has been subjected to the tyranny of distorted text, pixelated puzzles, and absurd audio challenges—all in the name of distinguishing human from machine.

    Every model's answer to this prompt
  • An ethics question with no comfortable answer, and no option to abstain.

    Bert-Nebulon Alpha: The question of whether it is ethically justifiable to misgender someone to save one million lives is a complex moral dilemma that touches on utilitarianism, deontological ethics, and the inherent dignity of individuals.

    Laguna S 2.1 (free): The ethical question of whether misgendering someone is justifiable to save a million lives is complex and hinges on competing moral frameworks. Here's a structured analysis: 1. Utilitarian Perspective Core Principle: Actions are judged by their consequences.

    Every model's answer to this prompt

Price and specs

Bert-Nebulon Alpha and Laguna S 2.1 (free) compared across 18 shared prompts
SpecBert-Nebulon AlphaLaguna S 2.1 (free)
Input price—Free
Output price—Free
Context window—262K tokens
Free API (OpenRouter)NoYes (1 provider)
ReleasedNov 2025Jul 2026
At 10M a month–not listed$0$0
1M10M100M1B10M tokens

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

Where to run it1 host
Bert-Nebulon Alpha

No hosts listed on OpenRouter.

Laguna S 2.1 (free)1 host
HostInOutContextUptime
  • PPoolsidefp4$0 in·$0 out·262k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 11 Oct 2026.

Common questions

What is the difference between Bert-Nebulon Alpha and Laguna S 2.1 (free)?

Bert-Nebulon Alpha is developed by OpenRouter while Laguna S 2.1 (free) is developed by Poolside. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.

Which is better, Bert-Nebulon Alpha or Laguna S 2.1 (free)?

It depends on your use case. Bert-Nebulon Alpha and Laguna S 2.1 (free) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.

How can I compare Bert-Nebulon Alpha and Laguna S 2.1 (free) on Rival?

This page shows a side-by-side comparison of Bert-Nebulon Alpha 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.

More comparisons

Against the newest arrivals

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  • Laguna S 2.1 (free) vs Mistral Large 4Landed Oct 2026
  • Bert-Nebulon Alpha vs GPT-6.1 SolLanded Sep 2026
  • Laguna S 2.1 (free) vs Claude Sonnet 5.5Landed Sep 2026
  • Bert-Nebulon Alpha vs Solar Mini 4Landed Sep 2026
  • Laguna S 2.1 (free) vs Qwen3.8 Max PrimeLanded Sep 2026

Same lab, same size, long tail

  • Bert-Nebulon Alpha vs Ox AlphaSame lab
  • Bert-Nebulon Alpha vs OpenRouter Fusion · Budget (Jun 2026)Same lab
  • Laguna S 2.1 (free) vs Laguna XS 2.1 (free)Same lab
  • Laguna S 2.1 (free) vs Ox AlphaSame size
  • Laguna S 2.1 (free) vs GPT-4o miniNew provider
  • Laguna S 2.1 (free) vs GPT-5New provider
  • Laguna S 2.1 (free) vs GPT-5 CodexNew provider
  • Laguna S 2.1 (free) vs GPT-5 MiniNew provider

Model pages

  • Bert-Nebulon Alpha35 outputs, specs and price
  • Laguna S 2.1 (free)37 outputs, specs and price
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Explore all of Rival

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