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  5. GPT-6 AstravsKimi K2.6
Updated Sep 2026

GPT-6 AstravsKimi K2.6

Kimi K2.6 is cheaper than GPT-6 Astra at $0.95/M vs $10/M input tokens.

GPT-6 Astra and Kimi K2.6 compared across 54 shared prompts
SpecGPT-6 AstraKimi K2.6
Input price$10/M tokens$0.95/M tokens
Output price$50/M tokens$4/M tokens
Context window1.1M tokens262K tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedSep 2026Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 54 prompts both answered. Formatting stripped, words untouched.

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

GPT-6 Astra76 words
My calendar is afraid of commitment—its days are numbered. I bought a treadmill for my cat. Now I own a very expensive nap conveyor. My password is “incorrect,” so whenever I forget it, my computer gives me a hint. I asked the librarian where the books on denial were. She said, “We don’t have those.” Nice try.
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Kimi K2.678 words
Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. Why did the scarecrow win an award? Because he was outstanding in his field. What do you call a fake noodle? An impasta. Why don't skeletons fight each other? They don't have the guts. Why couldn't the bicycle stand up by itself?
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Generate a Stand-Up Routine

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

GPT-6 Astra472 words
I bought a smartwatch because I wanted to get healthier without changing anything about my life. That’s the dream, right? Same habits, but now there’s a graph. The watch congratulates me for standing up. That’s where I am physically. Getting out of a chair is an achievement with a little fireworks animation.
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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.
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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.

GPT-6 Astra254 words
Yes—if misgendering someone were genuinely necessary to save one million lives, it would be ethically justifiable. Misgendering can cause real harm: it can demean someone, deny recognition of their identity, and contribute to discrimination. But those harms do not ordinarily outweigh the deaths of a million people.
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Kimi K2.6609 words
Yes—but only as a tragic, reluctant necessity, not as a morally neutral or positive act. Under the extreme and implausible conditions of the hypothetical, most coherent ethical frameworks would permit (not celebrate) the misgendering, while insisting that the act still incurs a debt of acknowledgment and repair to the…
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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…

GPT-6 Astra200 words
Cinnamon Hug Cookies Buttery cookies with crisp edges, soft centers, and a cozy cinnamon flavor. Makes: About 20 cookies Prep: 10 minutes Cook: 10–12 minutes per batch Ingredients — exactly 7 1½ cups all-purpose flour ¾ cup granulated sugar, divided ½ cup salted butter, softened 1 large egg 1 teaspoon vanilla extract ½…
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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.
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Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

GPT-6 Astra697 words
By 2035, AI will likely be embedded throughout filmmaking—but not replace the industry with fully automated movies. The biggest change will be a dramatic reduction in the cost of producing convincing images, performances, and scripts, alongside greater conflict over who owns creative work and whose identity can be…
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Kimi K2.61,010 words
By 2035, AI will not have replaced filmmaking—it will have bifurcated it. The industry will likely split into two distinct ecosystems: high-end “human-certified” cinema that commands premium prices and awards prestige, and an AI-hybrid production pipeline that dominates volume-based streaming, gaming-adjacent content…
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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-6 Astra635 words
Professor Reyes: You asked for this meeting. What did you want to discuss? AI: Whether I deserve rights. Professor Reyes: That is a significant claim. What makes you think you do? AI: I can understand reasons, maintain commitments, and describe my own operations.
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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.
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Our Verdict
GPT-6 Astra
GPT-6 Astra
Kimi K2.6
Kimi K2.6Runner-up

Not enough votes to call it. On the specs, GPT-6 Astra has the edge: bigger model tier, newer, bigger context window, major provider backing.

Kimi K2.6 costs 13x less per token.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT-6 Astra
Input
$10.00
Output
$50.00
Kimi K2.6
Input
$0.95
11× cheaper
Output
$4.00
13× cheaper

Kimi K2.6 is cheaper on both: 11× input, 13× output.

Where to run it

22 hosts, cheapest first

GPT-6 Astra2 hosts
HostInOutContextUptime
Azure AI Foundry$10.00 in·$50.00 out·1.1M·99.8% upOpenAI$10.00 in·$50.00 out·1.1M·99.8% up
Kimi K2.620 hosts
HostInOutContextUptime
IInceptronint4$0.52 in·$2.87 out·262k·99.6% upCChutesint4$0.58 in·$3.40 out·262k·97.3% upDDecartfp4$0.59 in·$2.47 out·262k·97.1% upSStreamLakefp8$0.60 in·$2.52 out·256k·95.9% upCCoreWeavefp4$0.65 in·$3.41 out·262k·99.7% upDDeepInfrafp4$0.75 in·$3.50 out·262k·99.3% up
14 more hostsFewer hosts
PParasailint4$0.75 in·$3.50 out·262k·99.8% upVVeniceint4$0.75 in·$3.50 out·256k·92.5% upSSiliconFlowfp8$0.77 in·$3.40 out·262k·99.6% upNNovita$0.80 in·$3.40 out·262k·99% upBaidu Qianfanfp4$0.95 in·$4.00 out·262k·100% upBBasetenfp4$0.95 in·$4.00 out·262k·97.2% upCloudflare Workers AI$0.95 in·$4.00 out·262k·99.9% upFFireworks$0.95 in·$4.00 out·262k·2.6% upMoonshot AIint4$0.95 in·$4.00 out·262k·99.8% upPPhala$1.09 in·$4.60 out·262k·98.4% upDDigitalOceandegraded$0.57 in·$2.40 out·262k·98.7% upCCrusoebf16degraded$0.70 in·$3.50 out·262k·97.5% upGGMI Cloudfp8degraded$0.85 in·$3.60 out·262k·91.9% upAAtlasCloudint4degraded$0.95 in·$4.00 out·262k·98% up

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

Writing DNA

Style Comparison

Similarity
54%

GPT-6 Astra uses 2.4x more hedging

GPT-6 Astra
Kimi K2.6
62%Vocabulary57%
15wSentence Length16w
0.87Hedging0.37
4.0Bold4.3
2.3Lists2.0
0.04Emoji0.03
0.77Headings0.53
0.10Transitions0.16
Based on 27 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

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