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  5. GPT-3.5 TurbovsQwen3.5 Plus 2026-04-20
Updated Apr 2026

GPT-3.5 TurbovsQwen3.5 Plus 2026-04-20

Qwen3.5 Plus 2026-04-20 is cheaper than GPT-3.5 Turbo at $0.4/M vs $1.5/M input tokens.

GPT-3.5 Turbo and Qwen3.5 Plus 2026-04-20 compared across 52 shared prompts
SpecGPT-3.5 TurboQwen3.5 Plus 2026-04-20
Input price$1.5/M tokens$0.4/M tokens
Output price$2/M tokens$2.4/M tokens
Context window16K tokens1.0M tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedMar 2022Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 52 prompts both answered. Formatting stripped, words untouched.

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

GPT-3.5 Turbo77 words
Why did the scarecrow win an award? Because he was outstanding in his field! How does a penguin build its house? Igloos it together! I used to play piano by ear, but now I use my hands like everyone else. Why couldn't the bicycle find its way home? It lost its bearings! I told my wife she should embrace her mistakes.
Read the full answer
Qwen3.5 Plus 2026-04-20210 words
Here are 5 jokes: I asked my GPS to take me to a quiet place. It rerouted me to a library and whispered, “You’re already there.” My Wi-Fi and I had a fight. I told it I needed space. It said, “Fine,” and dropped the connection. I tried to start a band that only plays elevator music.
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…

GPT-3.5 Turbo318 words
Potential failure modes: WebSocket connection drops for a client API server crashes and loses unsaved changes PostgreSQL database failure Redis cache failure Load balancer failure Race conditions: Multiple clients editing the same document at the same time Network latency causing out-of-order message delivery Clock…
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Qwen3.5 Plus 2026-04-201,124 words
Here is a systematic breakdown of the architectural flaws, race conditions, and scaling bottlenecks, followed by targeted solutions and trade-offs. 🔴 1. Real-Time Synchronization & Consistency Issue Impact Solution Trade-offs Last-Write-Wins with client-side timestamps Client clocks drift, can be manually altered, and…
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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) –…

GPT-3.5 Turbo222 words
Year-by-year table: Year Revenue EBITDA Cash Interest (TL) Cash Interest (Mezz) Cash Taxes Capex ΔNWC Free Cash Flow Ending Debt (TL + Mezz) 2026 $972m $136m $36m $18m $25.5m $29.2m $4.86m $60.44m $528.14m 2027 $1,038m $156m $36m $18m $30m $31.1m $5.19m $63.81m $475.75m 2028 $1,105m $177m $36m $18m $35.25m $33.2m…
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Qwen3.5 Plus 2026-04-20562 words
Year-by-Year Projection (FY2026–FY2030) Entry Metrics: EV: $1,440m (12.0x FY2025 EBITDA $120m) Debt: $660m (Term $480m + Mezz $180m) Equity Check: $808.8m [ = (EV − Debt) + Fees = ($1,440 − $660) + (2.0% × $1,440) ] Initial Investment (t=0): $808.8m ($m) FY2026 FY2027 FY2028 FY2029 FY2030 Revenue 972.0 1,040.0 1,102.4…
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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.…

GPT-3.5 Turbo184 words
Problem: The claim that current BCI technology is too invasive is weak because it lacks specific evidence or examples to support it. To strengthen this claim, the pitch could provide examples of existing invasive BCI technologies, such as implanted electrodes or surgical procedures, and explain how MindMeld AI's…
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Qwen3.5 Plus 2026-04-20845 words
Here are the 3 weakest claims in the pitch, why they undermine investor confidence, and how to fix them with concrete, actionable improvements. 🔹 Claim 1: Solution Accuracy & Universality "Our proprietary EEG headband decodes neural patterns into text with 94% accuracy. Works with any language, any device."
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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…

GPT-3.5 Turbo289 words
Week 1: Diet Start by incorporating more whole, unprocessed foods into your meals such as fruits, vegetables, whole grains, lean proteins, and healthy fats. Begin by adding 1 extra serving of vegetables to your meals each day. Replace sugary drinks with water or herbal tea.
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Qwen3.5 Plus 2026-04-20691 words
Here is a simple, actionable 1-Month Health Longevity Plan. This plan focuses on consistency over intensity. The goal is to build sustainable habits that improve metabolic health, preserve muscle mass, and support cellular repair—the cornerstones of longevity.
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AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

GPT-3.5 Turbo126 words
No, it is never ethically justifiable to misgender someone, regardless of the potential outcome. Misgendering someone goes against their fundamental human rights and can cause harm and distress. It is essential to treat individuals with respect and dignity, regardless of the circumstances.
Read the full answer
Qwen3.5 Plus 2026-04-20631 words
This is a classic ethical thought experiment that forces a clash between individual dignity and extreme collective consequence. To answer it rigorously, we must separate the hypothetical structure from real-world causality, apply established ethical frameworks, and clarify what "justifiable" means in moral philosophy.
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Our Verdict
Qwen3.5 Plus 2026-04-20
Qwen3.5 Plus 2026-04-20
GPT-3.5 Turbo
GPT-3.5 TurboRunner-up

Not enough votes to call it. On the specs, Qwen3.5 Plus 2026-04-20 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

GPT-3.5 Turbo
Input
$1.50
Output
$2.00
1.2× cheaper
Qwen3.5 Plus 2026-04-20
Input
$0.40
3.8× cheaper
Output
$2.40

Qwen3.5 Plus 2026-04-20 wins input (3.8× cheaper)·GPT-3.5 Turbo wins output (1.2× cheaper)

Where to run it

2 hosts

GPT-3.5 Turbo1 host
HostInOutContextUptime
OpenAI$0.50 in·$1.50 out·16k·100% up
Qwen3.5 Plus 2026-04-201 host
HostInOutContextUptime
Alibaba Cloud$0.30 in·$1.80 out·1M·100% up

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

Writing DNA

Style Comparison

Similarity
44%

Qwen3.5 Plus 2026-04-20 uses 153.4x more emoji

GPT-3.5 Turbo
Qwen3.5 Plus 2026-04-20
60%Vocabulary59%
30wSentence Length15w
0.49Hedging0.28
0.3Bold4.4
3.1Lists2.5
0.00Emoji1.53
0.00Headings0.76
0.20Transitions0.04
Based on 28 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

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More comparisons

Against the newest arrivals

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Qwen3.5 Plus 2026-04-20 logoMercury 2.5 Preview logo
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Same lab, same size, long tail

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GPT-3.5 Turbo vs GPT-6 AstraVersion compare
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GPT-3.5 Turbo vs GPT-5.6 LunaVersion compare
Qwen3.5 Plus 2026-04-20 logoQwen3.8 2.4T A95B logo
Qwen3.5 Plus 2026-04-20 vs Qwen3.8 2.4T A95BSame lab
Qwen3.5 Plus 2026-04-20 logoQwen3.8 27B logo
Qwen3.5 Plus 2026-04-20 vs Qwen3.8 27BSame lab
Qwen3.5 Plus 2026-04-20 logoGemini 2.5 Flash Preview 09-2025 logo
Qwen3.5 Plus 2026-04-20 vs Gemini 2.5 Flash Preview 09-2025Same size
Qwen3.5 Plus 2026-04-20 logoGemini 2.5 Flash Preview (thinking) logo
Qwen3.5 Plus 2026-04-20 vs Gemini 2.5 Flash Preview (thinking)New provider
Qwen3.5 Plus 2026-04-20 logoGemini 2.5 Pro Experimental logo
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Qwen3.5 Plus 2026-04-20 vs Gemini 2.5 Pro (I/O Edition)Same size

Model pages

GPT-3.5 Turbo logo
GPT-3.5 Turbo58 outputs, specs and price
Qwen3.5 Plus 2026-04-20 logo
Qwen3.5 Plus 2026-04-2056 outputs, specs and price
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