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  5. Kimi K2.6vsSolar Pro 4
Updated Aug 2026

Kimi K2.6vsSolar Pro 4

Solar Pro 4 is cheaper than Kimi K2.6 at $0.09/M vs $0.95/M input tokens.

Kimi K2.6 and Solar Pro 4 compared across 14 shared prompts
SpecKimi K2.6Solar Pro 4
Input price$0.95/M tokens$0.09/M tokens
Output price$4/M tokens$0.36/M tokens
Context window262K tokens524K tokens
WeightsOpen—
Free API (OpenRouter)NoNo
ReleasedApr 2026Aug 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 14 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…

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
Solar Pro 41,851 words
As CEO, my overriding duty is to balance patient safety, legal/regulatory compliance, fiduciary responsibility, and long-term corporate survival. A 1-in-8,000 risk of liver failure is rare but severe, potentially fatal, and materially unexpected relative to the current label.
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…

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
Solar Pro 4294 words
🍝 Golden Umami Silk Noodles A savory-sweet pasta dish that transforms basic pantry staples into a glossy, flavorful meal. It's quick, comforting, and relies on the balance of soy, honey, and butter for a rich sauce without needing fresh produce.
Read the full answer

Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

Kimi K2.6701 words
Here are the three weakest claims in the MindMeld AI pitch, ranked by their potential to destroy investor credibility. The "Pre-Cognition" Claim The Claim: "MindMeld AI reads your brainwaves to predict what you want to type before you think it" (Slide 1) Why it is weak: This is neuroscientifically incoherent.
Read the full answer
Solar Pro 41,009 words
Here are the three weakest claims in the MindMeld AI pitch deck, along with an analysis of why they undermine credibility and specific recommendations for improvement. The Technical Performance Claim Claim: "Our proprietary EEG headband uses advanced ML to decode neural patterns into text with 94% accuracy...
Read the full answer

Debug This Architecture

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

Kimi K2.62,081 words
Here is a systematic breakdown of the critical flaws in this architecture, categorized by the type of risk they introduce. The "2-Second Blindness" – Cross-Server Sync via DB Polling Category: Race Condition / Scaling Bottleneck / Failure Mode Problem: Because WebSocket servers do not communicate with one another…
Read the full answer
Solar Pro 41,598 words
This architecture contains several fundamental mismatches between real-time collaborative editing requirements and the chosen patterns. Below is a systematic breakdown of failure modes, race conditions, and scaling bottlenecks, each with a targeted solution and explicit trade-offs.
Read the full answer

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Kimi K2.6549 words
The Foundation Month: A 30-Day Longevity Starter Plan Philosophy: Don’t overhaul your life. Stack one small win at a time so habits stick. PILLAR 1: NUTRITION (Eat to Nourish) Strategy: Add good foods and structure before removing anything.
Read the full answer
Solar Pro 4859 words
Here’s a simple, progressive 1-month plan built around Diet, Exercise, and Sleep. Each week adds one small, beginner-friendly shift to each area. The goal isn’t perfection; it’s building consistent, sustainable habits that compound over time.
Read the full answer

Adversarial Contract Review

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

Kimi K2.61,993 words
This contract is heavily one-sided and contains multiple "landmine" clauses that shift virtually all risk to the Contractor while allowing the Client maximum flexibility. Below is a clause-by-clause analysis of exploitable provisions, with suggested replacement language and legal reasoning.
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Solar Pro 41,382 words
Disclaimer: I am an AI assistant and not an attorney. The following analysis is for informational purposes only and does not constitute legal advice. Contract laws vary significantly by jurisdiction (e.g., state, country).
Read the full answer
Our Verdict
Solar Pro 4
Solar Pro 4
Kimi K2.6
Kimi K2.6Runner-up

Not enough votes to call it. On the specs, Solar Pro 4 has the edge: newer, bigger context window.

Solar Pro 4 costs 11x less per token.

Too close to call
API pricing

Cost per 1M tokens

Kimi K2.6
Input
$0.95
Output
$4.00
Solar Pro 4
Input
$0.09
11× cheaper
Output
$0.36
11× cheaper

Solar Pro 4 is cheaper on both: 11× input, 11× output.

Where to run it

22 hosts, cheapest first

Kimi K2.621 hosts
HostInOutContextUptime
Baidu Qianfanfp4$0.45 in·$1.88 out·262k·100% upIInceptronint4$0.45 in·$2.46 out·262k·99.4% upCChutesint4$0.50 in·$2.85 out·262k·98.1% upDDigitalOcean$0.57 in·$2.40 out·262k·98.4% upDDecartfp4$0.59 in·$2.47 out·262k·94.4% upSStreamLakefp8$0.60 in·$2.52 out·256k·98.1% up
15 more hostsFewer hosts
CCoreWeavefp4$0.65 in·$3.41 out·262k·99.8% upCCrusoebf16$0.70 in·$3.50 out·262k·98.8% upDDeepInfrafp4$0.75 in·$3.50 out·262k·96.9% upPParasailint4$0.75 in·$3.50 out·262k·99.6% upSSiliconFlowfp8$0.77 in·$3.40 out·262k·99.8% upNNovita$0.80 in·$3.40 out·262k·99.6% upAAtlasCloudint4$0.95 in·$4.00 out·262k·96.1% upBBasetenfp4$0.95 in·$4.00 out·262k·96.8% upCloudflare Workers AI$0.95 in·$4.00 out·262k·99.9% upFFireworks$0.95 in·$4.00 out·262k·0% upMoonshot AIint4$0.95 in·$4.00 out·262k·99.9% upSSail Researchint4$1.00 in·$4.00 out·262k·100% upPPhala$1.09 in·$4.60 out·262k·99.4% upVVeniceint4degraded$0.75 in·$3.50 out·256k·86.3% upGGMI Cloudfp8degraded$0.85 in·$3.60 out·262k·87.9% up
Solar Pro 41 host
HostInOutContextUptime
UUpstage$0.09 in·$0.36 out·524k·99.8% up

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

Research

What we learned reading every model

FAQ

Common questions

Kimi K2.6 is developed by Moonshot AI while Solar Pro 4 is developed by Upstage. Kimi K2.6 has a 262K token context window vs Solar Pro 4's 524K. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

It depends on your use case. Kimi K2.6 and Solar Pro 4 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.

Kimi K2.6 costs $0.95/M input tokens and Solar Pro 4 costs $0.09/M input tokens. Solar Pro 4 is $0.86/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 Kimi K2.6 and Solar Pro 4 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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