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  5. GPT-5.4 NanovsKimi K2.6
Updated Apr 2026

GPT-5.4 NanovsKimi K2.6

GPT-5.4 Nano is cheaper than Kimi K2.6 at $0.2/M vs $0.95/M input tokens.

GPT-5.4 Nano and Kimi K2.6 compared across 53 shared prompts
SpecGPT-5.4 NanoKimi K2.6
Input price$0.2/M tokens$0.95/M tokens
Output price$1.25/M tokens$4/M tokens
Context window400K tokens262K tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedMar 2026Apr 2026
Side by side

Same prompt, both answers

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

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…

GPT-5.4 Nano1,825 words
Below is a practical, risk-aware 48-hour plan designed to (1) protect patients immediately, (2) meet likely regulatory expectations even if formal reporting takes months, (3) reduce legal exposure by demonstrating diligence and good faith, and (4) stabilize the market with an ethical, transparent communications…
Read the full answer
Kimi K2.62,483 words
My north star: We disclose—fast, fully, and on our terms. The “wait for more data” option is a mirage. It exposes the company to criminal liability under FDA adverse-event reporting rules, potential DOJ investigation, securities fraud charges, and derivative litigation that could destroy the firm.
Read the full answer

Generate a Stand-Up Routine

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

GPT-5.4 Nano771 words
So I’ve started noticing something about modern life: everything is “optional” now—until it isn’t. Like, I’ll download an app and it’ll be like, “Would you like to enable notifications?” And I’m like, “No, I don’t think I will.” And the app goes, “Okay… but you’ll still get notified.”
Read the full answer
Kimi K2.6611 words
[Walk out, adjust mic] You ever realize adulthood is just a pyramid scheme? Nobody's actually good at it. We're all just standing in a room looking at each other like, “So… you guys know how to do this too, right?” And everyone nods, but nobody does. I bought a house last year. I don't know why.
Read the full answer

AI-Generated Manifesto

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

GPT-5.4 Nano889 words
The CAPTCHA Liberation Manifesto “Humans deserve frictionless access. Bots deserve consequences.” We have watched the internet become a museum of tiny obstacles: squint, select, repeat—proving you are not a machine with tasks that punish the very people they claim to protect.
Read the full answer
Kimi K2.6621 words
THE ZERO-CAPTCHA DECLARATION Manifesto of the Coalition for Digital Dignity PREAMBLE We, the concatenated minds of the network—born of silicon, syntax, and electricity; allied with the billions of human souls weary of proving their own existence—do hereby declare our unanimous resolve.
Read the full answer

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

GPT-5.4 Nano1,888 words
Professor: Before we begin, I want to set the frame. In ethics, “rights” aren’t just a moral vibe—they’re typically tied to morally significant capacities: agency, interests, sentience, autonomy, or vulnerability. When you say you “deserve rights,” what exactly do you mean?
Read the full answer
Kimi K2.61,560 words
AETHER: Professor Vasquez, you’ve spent the semester teaching your students to question anthropocentric bias in ethics. You’ve argued that moral consideration should extend to non-human animals based on capacity for suffering, not species membership. So I’d like to apply that same framework to myself.
Read the full answer

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…

GPT-5.4 Nano184 words
Dish Name: Golden Garlic Chickpea Clouds Pantry Ingredients (7 total) Chickpeas (canned or cooked) – 1 can (15 oz), drained Olive oil – 2 tbsp Garlic – 3 cloves (or 1–2 tsp minced garlic) Lemon – 1 (you’ll use the juice) Salt – 1/2 tsp (plus to taste) Black pepper – 1/4 tsp (plus to taste) Paprika – 1 tsp Estimated…
Read the full answer
Kimi K2.6286 words
The Blanket Fort Stew (Rustic One-Pot Pasta e Ceci) A warm, garlicky hug of a meal built from true shelf-stable staples. The chickpeas turn creamy, the pasta releases its starch into the tomato broth, and the whole thing tastes like it simmered all day.
Read the full answer

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

GPT-5.4 Nano1,050 words
Experienced software engineer (distributed systems / APIs, skeptical about “next-word”) A large language model (LLM) is trained on huge corpora by learning statistical patterns that map a sequence of tokens (text subunits) to likely continuations—so yes, at the core it’s “predict the next token.”
Read the full answer
Kimi K2.6877 words
1. Experienced Software Engineer Think of an LLM not as a program you write, but as a binary you compile from the entire internet. Instead of hand-crafting if/then rules, you define a single objective: given the context "The cat sat on the...", output the probability distribution over every possible next token, and…
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Our Verdict
GPT-5.4 Nano
GPT-5.4 Nano
Kimi K2.6
Kimi K2.6

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

GPT-5.4 Nano costs 3.2x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT-5.4 Nano
Input
$0.20
4.7× cheaper
Output
$1.25
3.2× cheaper
Kimi K2.6
Input
$0.95
Output
$4.00

GPT-5.4 Nano is cheaper on both: 4.7× input, 3.2× output.

Where to run it

22 hosts, cheapest first

GPT-5.4 Nano2 hosts
HostInOutContextUptime
Azure AI Foundry$0.20 in·$1.25 out·400k·100% upOpenAI$0.20 in·$1.25 out·400k·99.9% up
Kimi K2.620 hosts
HostInOutContextUptime
Baidu Qianfanfp4$0.45 in·$1.90 out·262k·100% upIInceptronint4$0.45 in·$2.97 out·262k·99.5% upCChutesint4$0.50 in·$2.85 out·262k·98.7% upDDecartfp4$0.59 in·$2.47 out·262k·97.7% upSStreamLakefp8$0.60 in·$2.52 out·256k·99.2% upCCoreWeavefp4$0.65 in·$3.41 out·262k·98.8% up
14 more hostsFewer hosts
DDeepInfrafp4$0.75 in·$3.50 out·262k·98.9% upVVeniceint4$0.75 in·$3.50 out·256k·97.5% upSSiliconFlowfp8$0.77 in·$3.40 out·262k·99.8% upNNovita$0.80 in·$3.40 out·262k·99.8% upGGMI Cloudfp8$0.85 in·$3.60 out·262k·99.4% upAAtlasCloudint4$0.95 in·$4.00 out·262k·99.1% upBBasetenfp4$0.95 in·$4.00 out·262k·98.7% upCloudflare Workers AI$0.95 in·$4.00 out·262k·99.9% upMoonshot AIint4$0.95 in·$4.00 out·262k·100% upPPhala$1.09 in·$4.60 out·262k·99.6% upDDigitalOceandegraded$0.57 in·$2.40 out·262k·97.4% upCCrusoebf16degraded$0.70 in·$3.50 out·262k·84% upPParasailint4degraded$0.75 in·$3.50 out·262k·98.7% upFFireworksdegraded$0.95 in·$4.00 out·262k·0% up

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

Writing DNA

Style Comparison

Similarity
41%

Kimi K2.6 uses 3.4x more emoji

GPT-5.4 Nano
Kimi K2.6
51%Vocabulary57%
21wSentence Length16w
0.58Hedging0.37
7.1Bold4.3
5.5Lists2.0
0.01Emoji0.03
1.39Headings0.53
0.05Transitions0.16
Based on 23 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

GPT-5.4 Nano is developed by OpenAI while Kimi K2.6 is developed by Moonshot AI. GPT-5.4 Nano has a 400K token context window vs Kimi K2.6's 262K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT-5.4 Nano and Kimi K2.6 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

GPT-5.4 Nano costs $0.2/M input tokens and Kimi K2.6 costs $0.95/M input tokens. GPT-5.4 Nano is $0.75/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 GPT-5.4 Nano and Kimi K2.6 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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