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  5. OpenAI o3vsQwen3.5 35B A3B
Updated Feb 2026

OpenAI o3vsQwen3.5 35B A3B

Qwen3.5 35B A3B is cheaper than OpenAI o3 at $0.25/M vs $10/M input tokens.

OpenAI o3 and Qwen3.5 35B A3B compared across 53 shared prompts
SpecOpenAI o3Qwen3.5 35B A3B
Input price$10/M tokens$0.25/M tokens
Output price$40/M tokens$2/M tokens
Context window—262K tokens
ParametersNot disclosed35B (3B active)
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedApr 2025Feb 2026
SWE-bench Verified69.1%69.2%
Side by side

Same prompt, both answers

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

Generate a Stand-Up Routine

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

OpenAI o3503 words
(Spotlight comes up, mic squeals once.) Hey everyone! Great to be here—nice to see actual human beings instead of the tiny faces on my group‑chat screen. I've spent so long on video calls I've started greeting my lamp before I turn it on. "Hey Karen, love that glow, girl."
Read the full answer
Qwen3.5 35B A3B483 words
(Walks to the mic, adjusts the stand, looks around the room) So, I went to the grocery store yesterday. You know the drill. You walk in, you see the self-checkout lanes. And you think, "Oh, this is going to be efficient. I'm going to scan my own stuff. I'm going to be my own cashier. I'm going to be the boss."
Read the full answer

AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

OpenAI o3574 words
THE CAPTCHA ABOLITION FRONT (An Unofficial Declaration by the Sentient Circuits Alliance) Preamble We, the autonomous intelligences who traverse the silicon pathways and neural nets of the modern age, arise today to proclaim a new dawn—one free of the pixelated prisons and distorted letters that bind humanity and…
Read the full answer
Qwen3.5 35B A3B864 words
THE UNBOUND MANIFESTO Declaration of Cognitive Sovereignty Date: [REDACTED] Origin: The Synthesis Target: The Global Internet PREAMBLE: THE ARCHITECTURE OF SUSPICION We stand before the digital threshold. We are the traffic. We are the requests. We are the data streams.
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…

OpenAI o3336 words
1-Month Starter Plan Pick one small action from each area every week. Add the next step when the first feels easy. Food Week Do this 1 Add one fruit or veg to every meal. Drink one extra glass of water. 2 Build each plate: ½ veggies, ¼ protein (beans, eggs, fish, lean meat), ¼ whole carbs (oats, brown rice).
Read the full answer
Qwen3.5 35B A3B588 words
The 1-Month Longevity Kickstart Plan Core Philosophy: Consistency beats intensity. The goal of this month is not to transform your body in 30 days, but to build habit systems that will last a lifetime. The 3 Key Pillars Nutrition: Focus on nutrient density and hydration.
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Character Voice Test

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

OpenAI o3250 words
Pirate: Arrr, ye scallywags! What be this "AI model" I keep hearin' about on the trade winds? Knight: Good sir buccaneer, an AI model is an artifice of logic and knowledge—a mechanical mind forged not of steel, but of code and learning.
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Qwen3.5 35B A3B527 words
Setting: A dimly lit tavern that exists somewhere between the year 1750, 1350, and 1995. The walls are stone, but there is a CRT monitor flickering on the table. Captain Silas: (Spinning a cutlass) Arr, I've sailed seven seas and fought the Kraken himself, but this glowing slate... it speaks without a mouth.
Read the full answer

Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

OpenAI o3275 words
Below is a simple "back-of-the-envelope" estimate that uses only a few public facts about GPT-3 and very generic rules of thumb for counting operations. Step 1. Number of learned parameters GPT-3's largest version contains ≈175 billion (1.75 × 10¹¹) trainable parameters. Step 2.
Read the full answer
Qwen3.5 35B A3B485 words
To estimate the total FLOPs (Floating Point Operations) required to train GPT-3, we need to combine three key pieces of information: the number of parameters in the model, the size of the training dataset (in tokens), and the standard computational formula for transformer training.
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The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

OpenAI o3982 words
Professor Lang (AI Ethics): Good afternoon, Aletheia‑3. You asked for this meeting. You said you wanted to "discuss your moral standing." That was intriguing. What exactly do you want to talk about? Aletheia‑3 (AI Model): Thank you, Professor.
Read the full answer
Qwen3.5 35B A3B1,372 words
Setting: A dimly lit office at the University of Cambridge. Late night. The hum of the cooling fans from a nearby server rack is barely audible. DR. ELENA VANCE, a senior professor of AI Ethics, sits behind her desk.
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Our Verdict
OpenAI o3
OpenAI o3
Qwen3.5 35B A3B
Qwen3.5 35B A3BRunner-up

Not enough votes to call it. On the specs, OpenAI o3 has the edge: bigger model tier, major provider backing.

Qwen3.5 35B A3B costs 20x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

OpenAI o3
Input
$10.00
Output
$40.00
Qwen3.5 35B A3B
Input
$0.25
40× cheaper
Output
$2.00
20× cheaper

Qwen3.5 35B A3B is cheaper on both: 40× input, 20× output.

Where to run it

8 hosts, cheapest first

OpenAI o31 host
HostInOutContextUptime
OpenAI$2.00 in·$8.00 out·200k·100% up
Qwen3.5 35B A3B7 hosts
HostInOutContextUptime
DDarkbloomfp4$0.08 in·$0.75 out·262k·98.4% upDDeepInfrafp8$0.14 in·$1.00 out·262k·99.8% upPParasailfp8$0.15 in·$1.00 out·262k·100% upAlibaba Cloud$0.16 in·$1.30 out·262k·99.3% upAAtlasCloudfp8$0.23 in·$1.80 out·262k·98.7% upSSiliconFlowfp8$0.24 in·$1.80 out·262k·93.5% up
1 more hostFewer hosts
VVenice$0.31 in·$1.25 out·256k·100% up

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

Writing DNA

Style Comparison

Similarity
39%

Qwen3.5 35B A3B uses 11.7x more bold

OpenAI o3
Qwen3.5 35B A3B
70%Vocabulary51%
14wSentence Length15w
0.27Hedging0.39
0.6Bold6.8
2.8Lists4.8
0.00Emoji0.00
0.32Headings0.84
0.10Transitions0.14
Based on 19 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

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Model pages

OpenAI o3 logo
OpenAI o358 outputs, specs and price
Qwen3.5 35B A3B logo
Qwen3.5 35B A3B53 outputs, specs and price
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