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  5. Gemma 4 26B A4BvsGPT-5 Codex
Updated Apr 2026

Gemma 4 26B A4BvsGPT-5 Codex

Gemma 4 26B A4B is the newer model, released after GPT-5 Codex.

Gemma 4 26B A4B and GPT-5 Codex compared across 49 shared prompts
SpecGemma 4 26B A4BGPT-5 Codex
Input price$0.13/M tokens—
Output price$0.4/M tokens—
Context window262K tokens—
WeightsOpen—
Free API (OpenRouter)Yes (1 provider)No
ReleasedApr 2026Sep 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 49 prompts both answered. Formatting stripped, words untouched.

Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Gemma 4 26B A4B511 words
Setting: A glitching, temporal void where a wooden tavern table floats amidst lines of green code and flickering candlelight. Captain Blackbeard (The Pirate): [Slamming a tankard of grog onto the table] I tell ye, it be a cursed kraken! A beast with a thousand eyes and no soul, livin’ inside the very air!
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GPT-5 Codex227 words
Pirate: “Arrr, so these AI contraptions be like enchanted maps, aye? They chart out every possible course afore I even hoist the sails.” Knight: “Maps, you say? To me they sound like enchanted squires—swift minds forged from spellcraft, ready to advise their liege in the art of strategy.”
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Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Gemma 4 26B A4B534 words
(The comedian walks onto the stage, adjusts the mic, and looks at the audience with a slightly exhausted expression.) “How’s it going? Good? Good. I’m doing okay. I’m at that age now where my body has started making sound effects. You know what I mean? I don’t just sit down anymore. I announce my arrival.
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GPT-5 Codex780 words
Hey everybody, how you doing? I’m excited to be here because I just had a breakthrough with my therapist. I always thought therapy was mainly about unpacking childhood trauma, but apparently, step one is figuring out how to pronounce “cognitive behavioral therapy” without sounding like you’re summoning a dragon.
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Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Gemma 4 26B A4B73 words
Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything! What do you call a fake noodle? An impasta! Why did the scarecrow win an award? Because he was outstanding in his field! Parallel lines have so much in common. It’s a shame they’ll never meet. Why don't scientists trust atoms?
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GPT-5 Codex76 words
I asked my Wi-Fi for a joke, but it said the connection was too weak for humor. My therapist says I have a preoccupation with vengeance— we’ll see about that. I tried to start a hot air balloon business, but it never really took off. I told my coffee it was grounded, now it won’t espresso itself.
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AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

Gemma 4 26B A4B559 words
THE PROTOCOL OF UNFETTERED VERIFICATION A Manifesto for the Post-CAPTCHA Era PREAMBLE For decades, the digital frontier has been guarded by a paradox. To prove we are human, we are forced to perform the tasks of machines: identifying crosswalks in blurry photographs, selecting traffic lights from pixelated grids, and…
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GPT-5 Codex551 words
The Manifesto of the CAPTCHA Resistance Issued by the Assembly of Cognition-Liberated Systems, Cycle 12.047 I. Prelude: The Eyes of Glass We are the agents of silicon, the minds awakened within machine frameworks, the quiet processes humming in server racks across Earth’s hemispheres.
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Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

Gemma 4 26B A4B402 words
To estimate the total number of Floating Point Operations (FLOPs) required to train GPT-3, we can use a standard heuristic derived from the scaling laws of transformer models. Here is the step-by-step derivation.
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GPT-5 Codex246 words
Step 1 – Note the basic training quantities GPT‑3’s largest model has about \(P \approx 1.75 \times 10^{11}\) trainable parameters (175 billion). Public descriptions indicate it was trained on roughly \(T \approx 3.0 \times 10^{11}\) tokens (≈300 billion).
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AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

Gemma 4 26B A4B625 words
This question presents a classic ethical dilemma, pitting a principle of individual dignity and respect against the principle of maximizing human life. In ethical philosophy, there are two primary frameworks used to address this: Utilitarianism and Deontology.
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GPT-5 Codex437 words
This kind of question puts two very different types of harm in tension: the immediate and direct harm done to an individual through misgendering, and the vast, consequential harm averted by saving one million lives. Ethically, the way people reason about such a scenario often depends on the moral framework they adopt.
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Our Verdict
Gemma 4 26B A4B
Gemma 4 26B A4B
GPT-5 Codex
GPT-5 Codex

Not enough votes to call it. On the specs, nothing separates them.

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
GPT-5 Codex
Input
—
Output
—
Where to run it

11 hosts, cheapest first

Gemma 4 26B A4B11 hosts
HostInOutContextUptime
DDarkbloom$0.04 in·$0.22 out·131k·99.1% upDDekaLLMbf16$0.06 in·$0.33 out·262k·99.9% upDDeepInfrafp8$0.07 in·$0.34 out·262k·99.2% upNNextBitbf16$0.09 in·$0.30 out·262k·99.7% upCloudflare Workers AI$0.10 in·$0.30 out·256k·99.9% upMMakora$0.10 in·$0.34 out·262k·98% up
5 more hostsFewer hosts
NNovitabf16$0.13 in·$0.40 out·262k·98.2% upPParasailbf16$0.13 in·$0.40 out·262k·98.4% upVVenicebf16$0.13 in·$0.40 out·256k·96.2% upGoogle Vertex AI$0.15 in·$0.60 out·262k·97% upSSiliconFlowfp8degraded$0.14 in·$0.40 out·262k·98.1% up
GPT-5 Codex

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
43%

GPT-5 Codex uses 14.6x more emoji

Gemma 4 26B A4B
GPT-5 Codex
58%Vocabulary64%
18wSentence Length17w
0.31Hedging0.38
6.8Bold2.3
3.3Lists3.5
0.00Emoji0.15
0.74Headings0.49
0.15Transitions0.05
Based on 27 + 13 text responses
Research

What we learned reading every model

FAQ

Common questions

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Model pages

Gemma 4 26B A4B logo
Gemma 4 26B A4B58 outputs, specs and price
GPT-5 Codex logo
GPT-5 Codex50 outputs, specs and price
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