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  5. INTELLECT-3vsQwen3.5 Plus 2026-02-15
Updated Feb 2026

INTELLECT-3vsQwen3.5 Plus 2026-02-15

Qwen3.5 Plus 2026-02-15 is the newer model, released after INTELLECT-3.

INTELLECT-3 and Qwen3.5 Plus 2026-02-15 compared across 53 shared prompts
SpecINTELLECT-3Qwen3.5 Plus 2026-02-15
Input price—$0.4/M tokens
Output price—$2.4/M tokens
Context window—1.0M tokens
WeightsOpenClosed
Free API (OpenRouter)NoNo
ReleasedNov 2025Feb 2026
Side by side

Same prompt, both answers

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

Mini LBO Underwrite

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

INTELLECT-3304 words
HarborTech Services (HTS) - LBO Projection Model LBO Projection Model (FY2026-FY2030) ($ millions) FY2026 FY2027 FY2028 FY2029 FY2030 Revenue $972.0 $1,040.0 $1,102.3 $1,157.4 $1,215.3 EBITDA $136.1 $156.0 $176.4 $191.0 $206.6 Cash Interest - Term Loan $43.2 $43.2 $43.2 $43.2 $43.2 Cash Interest - Mezzanine $21.6 $21.6…
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Qwen3.5 Plus 2026-02-151,020 words
Transaction Setup & Sources/Uses (FY2025 Close) Entry Metrics: FY2025 EBITDA: $120m Purchase Price (EV): $120m × 12.0x = $1,440m Transaction Fees: $1,440m × 2.0% = $28.8m Total Uses: $1,468.8m Sources of Capital: Term Loan (4.0x): $120m × 4.0 = $480.0m Interest: 9.0% Cash + 1.0% Amortization Mezzanine (1.5x): $120m ×…
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Generate a Stand-Up Routine

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

INTELLECT-3705 words
Here's a 3-minute stand-up routine focusing on observational humor, relatable frustrations, and absurdities of modern life, avoiding puns entirely: (Lights up, slight exhale) Okay, so... who here owns a phone? (Pause, nod) Yeah, thought so. Everyone.
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Qwen3.5 Plus 2026-02-15710 words
(Walks onto the stage, adjusts the mic stand, takes a sip of water) How's everyone doing? Good? You look good. You look like people who have their lives together. Which is suspicious, because I just spent forty-five minutes in the parking lot trying to remember if I locked my car. I don't mean I forgot how to lock it.
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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…

INTELLECT-3745 words
Comprehensive 3-Month Longevity Optimization Plan Designed for a biohacker prioritizing cutting-edge science, data-driven tracking, and personalized adaptation. Assumes no pre-existing health conditions. Always consult a physician before starting.
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Qwen3.5 Plus 2026-02-151,032 words
The "Quantum Leap" 90-Day Longevity & Performance Protocol Disclaimer: This protocol represents an advanced biohacking framework. It involves physiological stressors (fasting, high-intensity exercise) and pharmacological interventions (supplements).
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Realistic AI Interview

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

INTELLECT-3431 words
Interviewer: Mr. Jobs, thank you for joining us in 2025. The world’s changed a lot since your last public appearance. What’s your perspective on today’s AI revolution? Steve Jobs: [leaning forward, intense gaze] "Technology is nothing if it doesn’t amplify human potential.
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Qwen3.5 Plus 2026-02-15925 words
Setting: A minimalist, sun-drenched studio in Cupertino. The year is 2025. Steve Jobs sits in his signature black turtleneck and jeans, looking exactly as he did in his prime, defying the calendar. Across from him sits an interviewer, notebook ready. The atmosphere is quiet, intense, and focused.
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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…

INTELLECT-3518 words
Pantry Kiss Pasta A creamy, garlicky tomato pasta with a subtle spicy kick, using only staples you likely have. Yields: 1-2 servings Prep Time: 5 minutes Cook Time: 15 minutes Total Time: 20 minutes Ingredients (Exactly 7!)
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Qwen3.5 Plus 2026-02-15426 words
🍯 Golden Honey-Garlic Glazed Chicken A quick, savory-sweet dish that turns basic pantry staples into a restaurant-quality meal. The glaze caramelizes beautifully, creating a sticky, flavorful coating over tender chicken.
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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…

INTELLECT-3962 words
Analysis of Potential Issues in Real-Time Collaborative Document Editor Architecture Failure Modes WebSocket Connection Failures Issue: Users may experience interruptions due to unstable networks or server load balancer timeouts.
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Qwen3.5 Plus 2026-02-151,351 words
This architecture contains several critical flaws that would prevent it from functioning as a reliable real-time collaborative editor. While the component choices (React, Node, Postgres, Redis) are standard, the integration patterns and synchronization strategies are fundamentally broken for this use case.
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Our Verdict
Qwen3.5 Plus 2026-02-15
Qwen3.5 Plus 2026-02-15
INTELLECT-3
INTELLECT-3Runner-up

Not enough votes to call it. On the specs, Qwen3.5 Plus 2026-02-15 has the edge: bigger model tier, newer, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

INTELLECT-3
Input
—
Output
—
Qwen3.5 Plus 2026-02-15
Input
$0.40
Output
$2.40
Where to run it

1 host

INTELLECT-3

No hosts listed on OpenRouter.

Qwen3.5 Plus 2026-02-151 host
HostInOutContextUptime
Alibaba Cloud$0.26 in·$1.56 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Writing DNA

Style Comparison

Similarity
63%

INTELLECT-3 uses 2.9x more emoji

INTELLECT-3
Qwen3.5 Plus 2026-02-15
55%Vocabulary54%
21wSentence Length18w
0.63Hedging0.51
4.9Bold5.3
4.6Lists2.9
0.29Emoji0.10
1.06Headings0.75
0.23Transitions0.09
Based on 28 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

INTELLECT-3 is developed by OpenRouter while Qwen3.5 Plus 2026-02-15 is developed by Qwen. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

It depends on your use case. INTELLECT-3 and Qwen3.5 Plus 2026-02-15 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.

This page shows a side-by-side comparison of INTELLECT-3 and Qwen3.5 Plus 2026-02-15 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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Model pages

INTELLECT-3 logo
INTELLECT-359 outputs, specs and price
Qwen3.5 Plus 2026-02-15 logo
Qwen3.5 Plus 2026-02-1553 outputs, specs and price
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