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  5. Hy3vsKimi K2.5
Updated Jul 2026

Hy3vsKimi K2.5

Hy3 is cheaper than Kimi K2.5 at $0.132/M vs $0.6/M input tokens.

Hy3 and Kimi K2.5 compared across 14 shared prompts
SpecHy3Kimi K2.5
Input price$0.132/M tokens$0.6/M tokens
Output price$0.528/M tokens$3/M tokens
Context window262K tokens262K tokens
WeightsOpenOpen
Free API (OpenRouter)NoNo
ReleasedJul 2026Jan 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 14 prompts both answered. Formatting stripped, words untouched.

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…

Hy3178 words
Dish Name: Ruby Hurricane Pasta Ingredients (exactly 7 common pantry staples): Spaghetti (or any dry pasta) Canned diced tomatoes Garlic (pre-minced or whole cloves) Extra-virgin olive oil Red pepper flakes Salt Grated Parmesan (shelf-stable style) (Water for boiling pasta is assumed free and not counted.)
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Kimi K2.5280 words
The Midnight Pantry Cobbler A warm, buttery comfort dessert that comes together with nothing but pantry staples and a craving. Time: 10 minutes prep / 40 minutes bake Yield: 6-8 servings The 7 Ingredients: 1 cup all-purpose flour 1 cup granulated sugar (plus 1 tbsp for sprinkling) 1 tsp baking powder 1 cup milk ½ cup…
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Advanced Longevity Plan (Biohacker)

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

Hy3498 words
The 90-Day Biohacker Longevity & Performance Protocol Goal: Maximize healthspan, cognitive resilience, and physical capacity via quantified self, metabolic flexibility, and targeted compounds. Assumptions: Healthy adult, experienced with fasting/exercise, access to wearables & supplements. I.
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Kimi K2.5320 words
⚠️ MEDICAL DISCLAIMER: This protocol involves advanced biohacking strategies, extended fasting, high-intensity exercise, and experimental supplements. Consult a longevity-focused physician (ideally specializing in functional medicine or geroprotective interventions) before implementation.
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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…

Hy3997 words
Assumptions / Starting Point Current time: Monday 9:00 AM. Board meeting: Wednesday 9:00 AM (Hour 48). Earnings call: Thursday 9:00 AM (Hour 72). Drug: $2B revenue, 4M patients, liver failure 1/8,000 over 5 yrs (~500 total, ~100/yr).
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Kimi K2.51,269 words
HOUR 0-4: EMERGENCY CONTAINMENT & LEGAL VERIFICATION Hour 0-1: Immediate Crisis Team Activation Convene emergency meeting with Chief Medical Officer, Chief Compliance Officer, General Counsel, Head of Pharmacovigilance, and Chief Communications Officer (in-person only, no virtual/paper trail on initial deliberations)…
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Historical Counterfactual Analysis

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

Hy3921 words
Premise: A functional solid-state transistor (germanium point-contact or junction) is demonstrated in 1920, with steady refinement through the interwar years. Vacuum tubes are not immediately displaced, but by the early 1930s transistors are reliable enough for niche military and telecom use, and by the late 1930s they…
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Kimi K2.51,718 words
If the transistor had emerged in 1920—requiring either a premature breakthrough in solid-state physics or a sophisticated refinement of crystal-detector technology—the cascading effects would reshape the 20th century.
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Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

Hy3975 words
Below is a breakdown of the major failure modes, race conditions, and scaling bottlenecks in the described architecture, followed by targeted fixes and their trade-offs.
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Kimi K2.5196 words
This architecture contains several critical flaws that would prevent real-time collaboration, create data consistency issues, and cause catastrophic failures at scale.
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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…

Hy3816 words
For the Experienced Software Engineer (distributed systems/APIs, no ML, skeptical) You’re used to building systems where explicit logic, endpoints, and state machines handle requests.
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Kimi K2.5938 words
1. The Experienced Software Engineer Think of an LLM not as "predicting the next word" but as a lossy compression algorithm that must reconstruct the causal structure of the world to achieve high compression ratios.
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Our Verdict
Hy3
Hy3
Kimi K2.5
Kimi K2.5Runner-up

Not enough votes to call it. On the specs, Hy3 has the edge: bigger model tier, newer.

Hy3 costs 5.7x less per token.

Too close to call
API pricing

Cost per 1M tokens

Hy3
Input
$0.13
4.5× cheaper
Output
$0.53
5.7× cheaper
Kimi K2.5
Input
$0.60
Output
$3.00

Hy3 is cheaper on both: 4.5× input, 5.7× output.

Where to run it

11 hosts, cheapest first

Hy36 hosts
HostInOutContextUptime
DDeepInfrafp4$0.13 in·$0.53 out·262k·99.5% upTencentfp8$0.13 in·$0.53 out·262k·99.8% upNNovita$0.14 in·$0.58 out·262k·99.7% upPPhala$0.15 in·$0.64 out·262k·99.9% upAAtlasCloudfp8$0.20 in·$0.80 out·262k·99.9% upGGMI Cloudbf16degraded$0.14 in·$0.58 out·262k·99% up
Kimi K2.55 hosts
HostInOutContextUptime
SSiliconFlowint4$0.45 in·$2.25 out·262k·99.9% upAAtlasCloudint4$0.49 in·$2.50 out·262k·99.3% upVVenice$0.53 in·$3.33 out·256k·98.9% upNNovita$0.57 in·$2.85 out·262k·98.9% upAmazon Bedrock$0.60 in·$3.00 out·262k·99.3% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Hy3 is developed by Tencent while Kimi K2.5 is developed by Moonshot AI. Hy3 has a 262K token context window vs Kimi K2.5's 262K. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

It depends on your use case. Hy3 and Kimi K2.5 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 14 challenges so you can judge which fits your needs best.

Hy3 costs $0.132/M input tokens and Kimi K2.5 costs $0.6/M input tokens. Hy3 is $0.47/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 Hy3 and Kimi K2.5 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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Hy314 outputs, specs and price
Kimi K2.5 logo
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