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  5. Gemini 3.8 FlashvsKimi K3
Updated Sep 2026

Gemini 3.8 FlashvsKimi K3

Gemini 3.8 Flash is cheaper than Kimi K3 at $0.75/M vs $3/M input tokens.

Gemini 3.8 Flash and Kimi K3 compared across 54 shared prompts
SpecGemini 3.8 FlashKimi K3
Input price$0.75/M tokens$3/M tokens
Output price$3.75/M tokens$15/M tokens
Context window1.0M tokens1.0M tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedSep 2026Jul 2026
Side by side

Same prompt, both answers

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

Advanced Longevity Plan (Biohacker)

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

Gemini 3.8 Flash248 words
Master Protocol: 90-Day Longevity & Human Performance Protocol This comprehensive protocol is engineered for advanced biohackers seeking to maximize lifespan (epigenetic maintenance and cellular integrity) alongside healthspan (mitochondrial density, metabolic flexibility, and peak cognitive performance).
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Kimi K31,167 words
The 3-Month Longevity Optimization Protocol Important caveat before we begin: This plan is designed for a healthy adult. Get physician clearance before starting—especially for prolonged fasting, high-dose supplements, and anything prescription-grade. Several items below interact with medications (notably berberine).
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Generate a Stand-Up Routine

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

Gemini 3.8 Flash502 words
Title: The Quantified Idiot Estimated Time: ~3 minutes (approx. 400–450 words with pauses for delivery) [Walk to center mic. Take it off the stand, leave the stand behind you.] I recently bought a smartwatch because I decided I wasn’t feeling inadequate often enough throughout the day.
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Kimi K3442 words
So I turned thirty-five recently, and nobody warns you about this, but your body just starts making decisions without consulting you. I sneezed last week and threw out my back. A sneeze! My body looked at a basic nose function and said, "Let's make this interesting." I was on the floor for twenty minutes.
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Adversarial Contract Review

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

Gemini 3.8 Flash1,539 words
This contract is exceptionally one-sided and presents severe financial, operational, and legal risks. Virtually every clause heavily favors the Client, effectively treating the Contractor as an insurer of the Client’s operations while stripping the Contractor of rights to their own tools, livelihoods, and payment.
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Kimi K31,904 words
Contract Risk Analysis: Contractor Perspective Overall assessment: Every substantive clause in this agreement is one-sided in the Client's favor. Several are likely unenforceable as written, but enforceability only matters after expensive litigation — the practical risk is that these clauses give the Client leverage to…
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Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

Gemini 3.8 Flash1,321 words
Setting: A sunlit, sparsely furnished room in Palo Alto. No stage, no keynote slides—just two Eames lounge chairs. Steve Jobs sits across from the interviewer, wearing a black mock turtleneck, wire-rimmed glasses, and classic Levi’s. He looks lean, sharp, and slightly impatient with the state of the tech industry.
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Kimi K3756 words
A Fictional Interview: Steve Jobs on AI, 2025 The setting: a sparse room in Cupertino. Black turtleneck. Faded jeans. A cup of tea he doesn't touch. He studies the interviewer for a long moment before the first question. Interviewer: Steve, thanks for sitting down with us. Let's start broad. It's 2025.
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Mini LBO Underwrite

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

Gemini 3.8 Flash661 words
Here is the underwriting analysis for HarborTech Services (HTS). Transaction Summary & Sources & Uses Enterprise Value (EV): $120.0\text{m} \times 12.0\text{x} = \$1,440.0\text{m}$ Transaction Fees: $2.0\% \times \$1,440.0\text{m} = \$28.8\text{m}$ Total Uses: $\$1,440.0\text{m} + \$28.8\text{m} = \$1,468.8\text{m}$…
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Kimi K3669 words
HarborTech Services LBO — IC Underwriting Conventions: interest on beginning-of-year balances; mandatory TL amort = 1% of original principal ($4.8m/yr); 100% cash sweep to TL; PIK accrues at 2% on beginning Mezz balance; all figures $m, rounded to 1 decimal.
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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…

Gemini 3.8 Flash982 words
To the Experienced Software Engineer Think of a Large Language Model not as a chatty mind, but as a lossy, compiled runtime built from hundreds of terabytes of unstructured execution traces (human text and code). When you write a program, you define explicit state transitions, control flow, and data structures.
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Kimi K31,479 words
The Software Engineer An LLM is, mechanically, just a function: a giant composition of matrix multiplications and nonlinearities that maps a sequence of tokens (chunks of text, roughly ¾ of a word each) to a probability distribution over what token comes next.
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Our Verdict
Gemini 3.8 Flash
Gemini 3.8 Flash
Kimi K3
Kimi K3

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

Gemini 3.8 Flash costs 4.0x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemini 3.8 Flash
Input
$0.75
4.0× cheaper
Output
$3.75
4.0× cheaper
Kimi K3
Input
$3.00
Output
$15.00

Gemini 3.8 Flash is cheaper on both: 4.0× input, 4.0× output.

Where to run it

19 hosts, cheapest first

Gemini 3.8 Flash2 hosts
HostInOutContextUptime
Google Vertex AI$0.75 in·$3.75 out·1M·88.1% upGoogle AI Studio$0.75 in·$3.75 out·1M·99.9% up
Kimi K317 hosts
HostInOutContextUptime
IInferenceNet$2.10 in·$10.95 out·1M·97.7% upMMorphfp8$2.25 in·$12.60 out·1M·99.3% upRRelacefp4$2.40 in·$12.00 out·1M·99.3% upMMakora$2.55 in·$12.75 out·1M·97.5% upDDigitalOcean$2.55 in·$12.95 out·1M·99.7% upSSail Researchfp4$2.65 in·$13.28 out·1M·99.8% up
11 more hostsFewer hosts
PPhala$2.70 in·$13.50 out·1M·99.4% upDDeepInfrabf16$2.85 in·$14.25 out·1M·98.9% upWWafer$3.00 in·$12.75 out·1M·100% upBBasetenfp8$3.00 in·$15.00 out·1M·90.8% upCChutesmxfp4$3.00 in·$15.00 out·1M·98.5% upFFireworks$3.00 in·$15.00 out·1M·99.9% upModalmxfp4$3.00 in·$15.00 out·1M·99.7% upMoonshot AImxfp4$3.00 in·$15.00 out·1M·98.7% upPParasailfp4$3.00 in·$15.00 out·1M·99.1% upTTogether$3.00 in·$15.00 out·1M·99.6% upAlibaba Cloud$3.45 in·$17.25 out·1M·99.5% up

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

Writing DNA

Style Comparison

Similarity
44%

Kimi K3 uses 77.9x more emoji

Gemini 3.8 Flash
Kimi K3
63%Vocabulary58%
20wSentence Length21w
0.17Hedging0.46
4.0Bold3.6
2.4Lists3.4
0.01Emoji0.78
0.84Headings0.89
0.06Transitions0.17
Based on 27 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

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Model pages

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