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  5. Gemma 4 26B A4BvsGPT-6 Luna
Updated Sep 2026

Gemma 4 26B A4BvsGPT-6 Luna

GPT-6 Luna is cheaper than Gemma 4 26B A4B at $0.1/M vs $0.13/M input tokens.

Gemma 4 26B A4B and GPT-6 Luna compared across 20 shared prompts
SpecGemma 4 26B A4BGPT-6 Luna
Input price$0.13/M tokens$0.1/M tokens
Output price$0.4/M tokens$0.5/M tokens
Context window262K tokens1.1M tokens
WeightsOpenClosed
Free API (OpenRouter)Yes (1 provider)No
ReleasedApr 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 20 prompts both answered. Formatting stripped, words untouched.

Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

Gemma 4 26B A4B558 words
This is a high-ambition pitch that falls into a common trap for deep-tech startups: the "Science Fiction Gap." While the vision is compelling, several claims lack the scientific and operational credibility required to justify a $15M Series A.
Read the full answer
GPT-6 Luna421 words
“94% accuracy” and “predict what you want to type before you think it” Why it’s weak: This is the deck’s central technical claim, but “accuracy” is undefined: Is it word-level or character-level accuracy, measured on a fixed vocabulary or open-ended text, and under what conditions?
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Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Gemma 4 26B A4B735 words
To trace this counterfactual, we must assume that the fundamental physics of solid-state semiconductors (the ability to control electron flow through crystals) was mastered during the vacuum tube era. This shifts the "Information Age" forward by nearly 30 years. Here is the timeline of implications from 1920 to 1980.
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GPT-6 Luna1,472 words
The most important caveat is that inventing a transistor is not the same as inventing the modern semiconductor industry. A device demonstrated in 1920 might be a crude, low-power, unreliable point-contact transistor.
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Advanced Longevity Plan (Biohacker)

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

Gemma 4 26B A4B757 words
Disclaimer: I am an AI, not a doctor. The following plan involves potent physiological interventions, pharmacological agents, and extreme dietary shifts. Consult with a medical professional and perform baseline blood work (including ApoB, HbA1c, hs-CRP, Vitamin D, and Testosterone/Estradiol) before implementation.
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GPT-6 Luna1,874 words
12-week longevity and performance plan This plan is for a generally healthy adult who wants to improve fitness, metabolic health, sleep, and cognitive performance—not a substitute for medical care or a promise to slow aging.
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Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Gemma 4 26B A4B545 words
To avoid burnout, the secret to longevity is consistency over intensity. This plan follows a "progressive loading" model: you start with small wins in Week 1 and gradually build complexity. Here is your 1-month roadmap focusing on Nutrition, Movement, and Sleep.
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GPT-6 Luna330 words
A simple 1-month starter plan Choose three foundations: food, movement, and sleep. Aim for steady habits, not perfection. If you have a health condition, significant pain, or concerns about changing your activity or diet, check with a healthcare professional first.
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Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

Gemma 4 26B A4B435 words
Financial Model (FY2026–FY2030) Entry Calculations (End of FY2025): Purchase Price (EV): $120\text{m} \times 12.0\text{x} = \$1,440\text{m}$ Transaction Fees: $1,440\text{m} \times 2\% = \$28.8\text{m}$ Total Uses: $\$1,440\text{m} + \$28.8\text{m} = \$1,468.8\text{m}$ Debt (Total 5.5x): $\$120\text{m} \times 5.5 =…
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GPT-6 Luna405 words
All figures in $m. Assumptions: annual Term Loan amortization is 1% of original principal ($4.8m); cash interest is based on beginning-of-year balances; Mezz PIK compounds annually.
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Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

Gemma 4 26B A4B363 words
Here is a recipe for a comforting, savory dish that relies on pantry staples to create a deep, rich flavor. The Golden Pantry Pasta A silky, garlic-infused pasta dish with a crispy, salty crunch.
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GPT-6 Luna113 words
Crispy Parmesan Chickpeas A crunchy, savory snack with a cheesy finish Ingredients (7): 1 can chickpeas, drained and dried 1 tablespoon olive oil ½ teaspoon salt ½ teaspoon paprika ¼ teaspoon garlic powder ¼ cup grated Parmesan 1 tablespoon lemon juice Prep time: 5 minutes Cook time: 30–35 minutes Instructions: Heat…
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Our Verdict
GPT-6 Luna
GPT-6 Luna
Gemma 4 26B A4B
Gemma 4 26B A4BRunner-up

Not enough votes to call it. On the specs, GPT-6 Luna has the edge: newer, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemma 4 26B A4B
Input
$0.13
Output
$0.40
1.3× cheaper
GPT-6 Luna
Input
$0.10
1.3× cheaper
Output
$0.50

GPT-6 Luna wins input (1.3× cheaper)·Gemma 4 26B A4B wins output (1.3× cheaper)

Where to run it

15 hosts, cheapest first

Gemma 4 26B A4B12 hosts
HostInOutContextUptime
DDarkbloom$0.04 in·$0.22 out·131k·99.9% upDDekaLLMbf16$0.06 in·$0.33 out·262k·99.9% upDDeepInfrafp8$0.07 in·$0.34 out·262k·99.7% upNNextBitbf16$0.09 in·$0.30 out·262k·99.9% upCloudflare Workers AI$0.10 in·$0.30 out·256k·99.9% upCCoreWeavebf16$0.10 in·$0.30 out·262k·99.7% up
6 more hostsFewer hosts
MMakora$0.10 in·$0.34 out·256k·99.3% upNNovitabf16$0.13 in·$0.40 out·262k·99.8% upPParasailbf16$0.13 in·$0.40 out·262k·99.6% upVVenicebf16$0.13 in·$0.40 out·256k·99.5% upSSiliconFlowfp8$0.14 in·$0.40 out·262k·98.1% upGoogle Vertex AI$0.15 in·$0.60 out·262k·96.9% up
GPT-6 Luna3 hosts
HostInOutContextUptime
Azure AI Foundry$0.10 in·$0.50 out·1.1M·88.4% upOpenAI$0.10 in·$0.50 out·1.1M·99.9% upAmazon Bedrock$0.11 in·$0.55 out·1.1M·99.8% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Gemma 4 26B A4B is developed by Google AI while GPT-6 Luna is developed by OpenAI. Gemma 4 26B A4B has a 262K token context window vs GPT-6 Luna's 1.1M. You can compare their actual outputs across 20 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemma 4 26B A4B and GPT-6 Luna each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 20 challenges so you can judge which fits your needs best.

Gemma 4 26B A4B costs $0.13/M input tokens and GPT-6 Luna costs $0.1/M input tokens. GPT-6 Luna is $0.03/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 Gemma 4 26B A4B and GPT-6 Luna 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

Gemma 4 26B A4B logo
Gemma 4 26B A4B58 outputs, specs and price
GPT-6 Luna logo
GPT-6 Luna20 outputs, specs and price
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