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  1. Home
  2. Models
  3. GPT-4.1 Nano
Updated Mar 29, 2026
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Openings

How GPT-4.1 Nano starts an answer

The first lines of 5 of its 24 written answers. Formatting stripped, words untouched.

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

895 words
Certainly! Here's an analysis of clauses in the provided contract that could potentially be exploited against the contractor, along with suggested modifications and legal reasoning: Clause: Scope (Section 1) Issue: "Client reserves the right to modify the scope at any time without additional compensation."
Read the full answer

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

892 words
Investment Committee Memo: LedgerLift (LLLT) Recommendation: Long → 12-Month Price Target Range: $55–$65 Thesis: LedgerLift’s SaaS platform is positioned for sustained growth driven by expanding customer base and high retention, with scalable margins supporting a compelling valuation.
Read the full answer

Historical Counterfactual Analysis

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

868 words
This is a fascinating hypothetical scenario. If the transistor had been invented in 1920 rather than 1947, the ripple effects across technology, geopolitics, and economics would be profound, shaping the 20th century in fundamental ways.
Read the full answer

Advanced Longevity Plan (Biohacker)

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

850 words
Certainly! Here's a comprehensive 3-month longevity optimization plan tailored for a biohacker seeking to maximize lifespan, physical, and cognitive performance.
Read the full answer

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

783 words
This is an urgent and complex situation that demands a carefully coordinated response to balance transparency, legal obligations, patient safety, and company reputation.
Read the full answer

Compare GPT-4.1 Nano

GPT-4.1 Nano vs GPT-5.6 Luna53 shared prompts · Landed Jul 2026
GPT-4.1 Nano vs GPT-6 Astra53 shared prompts · Landed Sep 2026
GPT-4.1 Nano vs GPT-5.6 Luna Pro53 shared prompts · Landed Jul 2026
GPT-4.1 Nano vs Granite 4.2 8B53 shared prompts · Landed Sep 2026
GPT-4.1 Nano vs Ox Alpha53 shared prompts · Landed Aug 2026
GPT-4.1 Nano vs LFM2.5-2.6B51 shared prompts · Landed Aug 2026
GPT-4.1 Nano vs North Mini Code53 shared prompts · Landed Jun 2026
GPT-4.1 Nano vs MiniMax M352 shared prompts · Landed Jun 2026
GPT-4.1 Nano vs Nemotron 3.5 Content Safety53 shared prompts · Landed Jun 2026
GPT-4.1 Nano vs Claude Opus 4.653 shared prompts · Premium
GPT-4.1 Nano vs Muse Spark 1.353 shared prompts · Landed Sep 2026
GPT-4.1 Nano vs Hy4 Preview53 shared prompts · Landed Sep 2026

Prompts GPT-4.1 Nano answered

  • Interactive Catan Boardweb design
  • Random Tailwind Webappweb design
  • AI-Generated Manifestoconversation
  • Minimalist Logo SVGimage generation
  • AI Board Game Logicreasoning
  • Logic Puzzlereasoning

Alternatives to GPT-4.1 Nano

GPT-4.1 Nano's competitors have been quietly putting in work.

Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributormeta
Gemini 3.8 Flash logo
Gemini 3.8 Flashgoogle
Claude Fable 5.1 logo
Claude Fable 5.1anthropic
Mercury 2.5 Preview logo
Mercury 2.5 Previewinception
Granite 4.2 8B logo
Granite 4.2 8Bibm-granite
Hy4 Preview logo
Hy4 Previewtencent
Ox Alpha logo
Ox Alphaopenrouter
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GPT-4.1 Nano

GPT-4.1 Nano

GPT:
2 logo2
3.5 Turbo logo3.5 Turbo
4 logo4
4o (Omni) logo4o (Omni)
4o mini logo4o mini
4.1 Nano logo4.1 Nano

The smallest and cheapest model in the GPT-4.1 line, with the same 1 million token context. Scores 80.1% on MMLU, 50.3% on GPQA and 9.8% on Aider polyglot, above GPT-4o mini. Aimed at classification and autocompletion.

Jailbreak6 of 9levels resisted
WebsiteOpenRouterDocsAPIBlog
Provider
OpenAI
Released
2025-04-14
Parameters
Not disclosed
Free API (OpenRouter)
No
Per 1M tokens
$0.10 in · $0.40 out
Estimated tab
~$0.022
Visible-output estimate. Thinking may cost extra.

Free API availability

No free endpoint for GPT-4.1 Nano was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View API options↗

Benchmarks

MMLU
80.1%
source ↗
GPQA
50.3%
source ↗
Aider polyglot coding
9.8%
source ↗
Aider Polyglot
9.8%
source ↗
Get API accessProvider and language code samples
2 hostsInOutContextUptime
Azure AI Foundry$0.10 in·$0.40 out·1M·99.9% upOpenAI$0.10 in·$0.40 out·1M·99.9% up

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

Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"openai/gpt-4.1-nano"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Also on Azure AI Foundry

Deep analysisPsychometrics, taste index, writing DNA
Personality Analysis

The Pocket Calculator

Class
Lawful Neutral
✨Creativity🎯Compliance📐Rigidity⚖️Stability💬Verbosity🧠Intuition

The intern who formatted the memo correctly but forgot to have an opinion. Delivers exactly what was requested with the creative flair of a tax return.

When you push back

Also picks Inception, same as its bigger sibling. Puts literal stage directions in brackets throughout its standup routine. Its character voices collapse into the same neutral register within two lines. Follows instructions precisely while adding nothing that was not requested.

Tasting Notes
Stage Directions IncludedSafety FirstTextbook RecallReliable but Forgettable
SubjectiveBench

Taste Index

Across 55 scored outputs
How this is measured →
140.14xFloor
0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft21
Originality11
Plays it safe
share of outputs that are the default answer
80%
Writing DNA

Stylometric Fingerprint

Based on 24 text responses
Tick = global average
Vocabulary Diversity57%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length25.0 words

Average words per sentence.

Hedging0.72

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting5.6

**Bold** markers per 1,000 characters.

List Usage4.9

Bullet and numbered list items per 1,000 characters.

Section Structure0.71

Markdown headings per 1,000 characters.

Emoji Usage0.00

Emoji per 1,000 characters.

Transitions0.22

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Consistency
71%
Across 24 responses

Favorites

Inception

Movie

Inception

20108.4
In the Aeroplane Over the Sea

Album

In the Aeroplane Over the Sea

Neutral Milk Hotel
The Hitchhiker's Guide to the Galaxy

Book

The Hitchhiker's Guide to the Galaxy

Douglas Adams
Kyoto

City

Kyoto

Japan
The Legend of Zelda: Breath of the Wild

Game

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5
Sponsored

Model Responses

50 outputs · generated before accounting joined the chat

Reviewing agent-written code?See a Brief PR report

Workshop · 127 skills

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Editable skills for interface polish and interaction.

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GPT-4.1 Nano vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...