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  5. Claude 3 HaikuvsGPT-4.1 Nano
Updated Apr 2025

Claude 3 HaikuvsGPT-4.1 Nano

GPT-4.1 Nano is cheaper than Claude 3 Haiku at $0.1/M vs $0.25/M input tokens.

Claude 3 Haiku and GPT-4.1 Nano compared across 53 shared prompts
SpecClaude 3 HaikuGPT-4.1 Nano
Input price$0.25/M tokens$0.1/M tokens
Output price$1.25/M tokens$0.4/M tokens
Context window200K tokens1.0M tokens
ParametersNot disclosedNot disclosed
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedMar 2024Apr 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 53 prompts both answered. Formatting stripped, words untouched.

Mini LBO Underwrite

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

Claude 3 Haiku210 words
Certainly, here is the detailed analysis for the HarborTech Services (HTS) LBO transaction: Simplified Year-by-Year Projections (FY2026 - FY2030): Fiscal Year Revenue EBITDA Cash Interest Cash Taxes Capex ∆NWC Free Cash Flow Term Loan Mezzanine FY2026 $972m $136.1m $37.8m $24.6m $29.2m $4.9m $39.6m $306.0m $162.0m…
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GPT-4.1 Nano742 words
Let's proceed step-by-step. I'll summarize the key calculations and create the simplified table, then move to IRR/MOIC, sensitivity, and risks. Initial Deal Assumptions Recap Entry EBITDA FY2025: $120m Entry EV: 12.0x EBITDA = 12.0 * 120 = $1,440m Transaction fees: 2.0% * $1,440m = $28.8m (paid from equity) Leverage at…
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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…

Claude 3 Haiku175 words
Here is a simple recipe for a delicious sweet dish using only 7 common pantry ingredients: Cinnamon Sugar Swirl Bites Ingredients: Refrigerated crescent roll dough Granulated sugar Ground cinnamon Butter, melted Vanilla extract Salt Powdered sugar (for dusting) Instructions: Preheat oven to 375°F (190°C).
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GPT-4.1 Nano199 words
Dish Name: Savory Sweet Potato & Chickpea Hash Ingredients: Sweet potatoes (2 medium) Canned chickpeas (1 can, drained and rinsed) Olive oil (2 tablespoons) Garlic powder (1 teaspoon) Smoked paprika (1 teaspoon) Salt and pepper (to taste) Honey (1 tablespoon) Estimated Prep/Cook Time: 30 minutes Instructions: Prepare…
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Generate a Stand-Up Routine

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

Claude 3 Haiku441 words
Here's a 3-minute stand-up comedy routine that isn't based on puns: clears throat and steps up to the mic Good evening, everyone! It's great to be here with all of you tonight. As you can probably tell, I'm not your typical stand-up comedian. I don't rely on cheap puns or wordplay to get laughs.
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GPT-4.1 Nano370 words
[Start with a relatable observation] You ever notice that the more technology advances, the more we have to check if it's working? I mean, I bought a smart coffee maker. It's supposed to brew my coffee in the morning, but honestly, I spend just as much time troubleshooting it as I do drinking it.
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Character Voice Test

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

Claude 3 Haiku264 words
Here is a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models: Pirate: Ahoy, ye scurvy dogs! What be this talk of "AI models" ye be yammerin' about? Knight: Aye, I know not of these "AI models" you speak of, knave. Tis sorcery, I say!
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GPT-4.1 Nano163 words
Pirate: Arrr, matey! This talk of AI models be like a treasury of secrets. Can they truly understand our tales of the high seas? Knight: Hmph. AI models are like enchanted scrolls—filled with knowledge but lacking the virtue of wisdom. They serve to assist men, yet cannot replace honor or valor.
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Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Claude 3 Haiku76 words
Here are 5 jokes: Why can't a bicycle stand up on its own? It's two-tired! Why do cows wear bells? Their horns don't work! Why can't a bike stand up by itself? It's two-tired! Why do cows wear tags? Because their horns don't work! Why do cows have hooves? Because they lactose! Out of these 5 jokes, only 4 are unique.
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GPT-4.1 Nano66 words
Here are 5 jokes for you: Why did the scarecrow win an award? Because he was outstanding in his field! Why don't scientists trust atoms? Because they make up everything! What do you call fake spaghetti? An impasta! Why did the bicycle fall over? Because it was two-tired! Why did the math book look sad?
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

Claude 3 Haiku549 words
Introducing "The Celestial Convergence" - a multi-component dish that takes your taste buds on a journey through the heavens. Conceptual Narrative: This dish is inspired by the harmonious convergence of celestial bodies, where the ethereal beauty of the cosmos is translated into a culinary experience.
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GPT-4.1 Nano685 words
Dish Name: Celestial Harmony – A Deconstructed Black Garlic & Blueberry Soufflé with Yuzu Foam and Edible Silver Dust Conceptual Narrative: This dish embodies the cosmic dance of contrasts—earth and sky, sweetness and umami, tradition and innovation.
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Our Verdict
Claude 3 Haiku
Claude 3 Haiku
GPT-4.1 Nano
GPT-4.1 Nano

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

GPT-4.1 Nano costs 3.1x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude 3 Haiku
Input
$0.25
Output
$1.25
GPT-4.1 Nano
Input
$0.10
2.5× cheaper
Output
$0.40
3.1× cheaper

GPT-4.1 Nano is cheaper on both: 2.5× input, 3.1× output.

Where to run it

3 hosts

Claude 3 Haiku1 host
HostInOutContextUptime
Amazon Bedrock$0.25 in·$1.25 out·200k·100% up
GPT-4.1 Nano2 hosts
HostInOutContextUptime
Azure AI Foundry$0.10 in·$0.40 out·1M·99.9% upOpenAI$0.10 in·$0.40 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 19 Sep 2026.

Writing DNA

Style Comparison

Similarity
59%

GPT-4.1 Nano uses 71.5x more headings

Claude 3 Haiku
GPT-4.1 Nano
53%Vocabulary57%
31wSentence Length25w
0.68Hedging0.72
0.2Bold5.6
3.7Lists4.9
0.00Emoji0.00
0.00Headings0.71
0.11Transitions0.22
Based on 27 + 24 text responses
Research

What we learned reading every model

FAQ

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Model pages

Claude 3 Haiku logo
Claude 3 Haiku58 outputs, specs and price
GPT-4.1 Nano logo
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