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  5. Qwen3 Coder PlusvsQwen3.5 397B A17B
Updated Feb 2026

Qwen3 Coder PlusvsQwen3.5 397B A17B

Qwen3.5 397B A17B is cheaper than Qwen3 Coder Plus at $0.6/M vs $1/M input tokens.

Qwen3 Coder Plus and Qwen3.5 397B A17B compared across 53 shared prompts
SpecQwen3 Coder PlusQwen3.5 397B A17B
Input price$1/M tokens$0.6/M tokens
Output price$5/M tokens$3.6/M tokens
Context window128K tokens262K tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedSep 2025Feb 2026
SWE-bench Verified69.6%76.4%
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) –…

Qwen3 Coder Plus322 words
HarborTech Services LBO Underwriting Task 1: Year-by-Year Financial Projections FY Revenue EBITDA TL Interest Mezz Interest Total Interest Taxable Income Cash Taxes Capex ΔNWC FCF After Debt Service End TL End Mezz Total Debt 2026 972 136.1 39.6 14.4 54.0 82.1 20.5 29.2 3.6 48.8 396.0 183.7 579.7 2027 1,039 155.9 35.6…
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Qwen3.5 397B A17B575 words
Sources & Uses (Entry FY2025) Uses ($m) Sources ($m) Enterprise Value (12.0x $120m) $1,440.0 Term Loan (4.0x) $480.0 Transaction Fees (2.0% EV) $28.8 Mezzanine (1.5x) $180.0 Total Uses $1,468.8 Equity (Plug) $808.8 Total Sources $1,468.8 Entry Equity Check: $808.8m Total Debt: $660.0m ($480m TL + $180m Mezz) 5-Year…
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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…

Qwen3 Coder Plus580 words
48-Hour Crisis Action Plan Hours 1-4: Immediate Assessment & Team Assembly 1:00 AM - 3:00 AM: Contact my most trusted external crisis counsel (not our usual firm - potential conflicts) Summon head of R&D, Chief Medical Officer, and Head of Regulatory Affairs immediately Secure all internal research documents and…
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Qwen3.5 397B A17B1,322 words
This is a crisis scenario that defines a CEO's legacy. The decision matrix is clear: Patient safety and regulatory compliance must supersede short-term financial protection. Hiding this information constitutes securities fraud and potential criminal negligence (precedents include Vioxx/Merck and Purdue Pharma).
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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…

Qwen3 Coder Plus738 words
Analysis of Exploitable Contract Clauses Against Contractor SEVERELY UNFAVORABLE CLAUSES & SUGGESTED MODIFICATIONS Clause 1 - Scope Modification Current Problem: Allows unlimited scope changes without compensation "Client reserves the right to modify the scope at any time without additional compensation" Suggested…
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Qwen3.5 397B A17B1,220 words
Disclaimer: I am an artificial intelligence, not an attorney. The following analysis is for informational and educational purposes only and does not constitute legal advice or create an attorney-client relationship. Contract laws vary significantly by jurisdiction (e.g., California vs. New York vs. UK).
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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…

Qwen3 Coder Plus409 words
30-Day Health & Longevity Starter Plan Week 1: Foundation Building Area 1: Nutrition Goal: Clean up your eating basics Daily Actions: Replace one processed snack with fruit or nuts Drink 8 glasses of water (start your day with 2 glasses) Add one serving of vegetables to lunch and dinner Eat breakfast within 1 hour of…
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Qwen3.5 397B A17B641 words
Here is a simple, actionable 1-month plan designed to build sustainable habits for health and longevity. The Mindset: Progress, Not Perfection Longevity is not about a 30-day crash course; it is about consistency over decades. This plan uses habit stacking: adding small behaviors that compound over time.
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Generate a Stand-Up Routine

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

Qwen3 Coder Plus440 words
"Modern Problems" walks on stage So I tried to be healthy this year. I downloaded one of those fitness apps that tracks your steps. Apparently, walking to the fridge 47 times a day doesn't count as "cardio." Who knew? The app gave me a notification: "You walked 235 steps today. Pathetic." Thanks, Karen.
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Qwen3.5 397B A17B500 words
(The comedian walks to the center of the stage, adjusts the mic stand, and looks at the audience with a tired smile.) Has anyone else noticed that calling a customer service line is the only situation in life where you voluntarily enter a hostage negotiation? I tried to call my internet provider yesterday.
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Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Qwen3 Coder Plus206 words
Captain "Blackbeard" Morgan: adjusts tricorn hat Arrr, so ye're tellin' me these... "AI models" be like me trusty parrot Squawks, but fer thinkin'? Sir Reginald of York: By my sword, these contraptions sound most peculiar. In my time, we had apprentices who'd memorize entire libraries!
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Qwen3.5 397B A17B487 words
Setting: A tavern that exists outside of time. The ale is always cold, and the Wi-Fi is surprisingly strong. Characters: Captain Blacktooth: A pirate from the Caribbean, 1720. Sir Valerius: A knight from the Holy Roman Empire, 1350. Neo-Z: A hacker from Silicon Valley, 1995.
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Our Verdict
Qwen3.5 397B A17B
Qwen3.5 397B A17B
Qwen3 Coder Plus
Qwen3 Coder PlusRunner-up

Not enough votes to call it. On the specs, Qwen3.5 397B A17B has the edge: bigger model tier, newer, bigger context window.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Qwen3 Coder Plus
Input
$1.00
Output
$5.00
Qwen3.5 397B A17B
Input
$0.60
1.7× cheaper
Output
$3.60
1.4× cheaper

Qwen3.5 397B A17B is cheaper on both: 1.7× input, 1.4× output.

Where to run it

11 hosts, cheapest first

Qwen3 Coder Plus1 host
HostInOutContextUptime
Alibaba Cloud$0.65 in·$3.25 out·1M·100% up
Qwen3.5 397B A17B10 hosts
HostInOutContextUptime
Alibaba Cloud$0.39 in·$2.34 out·262k·100% upDDeepInfrafp8$0.45 in·$3.00 out·262k·99.9% upPParasailfp8$0.50 in·$3.60 out·262k·99.6% upNNovita$0.60 in·$3.60 out·262k·99.1% upSStreamLake$0.60 in·$3.60 out·256k·97.5% upAAtlasCloudfp8degraded$0.55 in·$3.50 out·262k·95.9% up
4 more hostsFewer hosts
DDigitalOceandegraded$0.55 in·$3.50 out·131k·94.2% upPPhaladegraded$0.55 in·$3.50 out·262k·97.9% upGGMI Cloudfp8degraded$0.60 in·$3.60 out·262k·84.1% upVVenicedegraded$0.75 in·$4.50 out·128k·69.1% up

Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.

Writing DNA

Style Comparison

Similarity
44%

Qwen3 Coder Plus uses 4.3x more sentence length

Qwen3 Coder Plus
Qwen3.5 397B A17B
67%Vocabulary54%
62wSentence Length14w
0.69Hedging0.39
3.3Bold6.9
5.3Lists4.2
0.12Emoji0.23
1.60Headings0.93
0.14Transitions0.17
Based on 28 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

Both are developed by Qwen but target different use cases. Qwen3 Coder Plus has a 128K token context window vs Qwen3.5 397B A17B's 262K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

It depends on your use case. Qwen3 Coder Plus and Qwen3.5 397B A17B 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.

Qwen3 Coder Plus costs $1/M input tokens and Qwen3.5 397B A17B costs $0.6/M input tokens. Qwen3.5 397B A17B is $0.40/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 Qwen3 Coder Plus and Qwen3.5 397B A17B 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

Qwen3 Coder Plus logo
Qwen3 Coder Plus59 outputs, specs and price
Qwen3.5 397B A17B logo
Qwen3.5 397B A17B53 outputs, specs and price
Rival
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Explore all of Rival

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