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  5. Optimus AlphavsQwen3.5 Plus 2026-04-20
Updated Apr 2026

Optimus AlphavsQwen3.5 Plus 2026-04-20

Qwen3.5 Plus 2026-04-20 is the newer model, released after Optimus Alpha.

Optimus Alpha and Qwen3.5 Plus 2026-04-20 compared across 17 shared prompts
SpecOptimus AlphaQwen3.5 Plus 2026-04-20
Input price—$0.4/M tokens
Output price—$2.4/M tokens
Context window1.0M tokens1.0M tokens
Weights—Open
Free API (OpenRouter)—No
ReleasedApr 2025Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 17 prompts both answered. Formatting stripped, words untouched.

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Optimus Alpha84 words
Here are 5 jokes: Why did the scarecrow win an award? Because he was outstanding in his field! Why don't scientists trust atoms? Because they make up everything! Why did the bicycle fall over? Because it was two-tired! What do you call fake spaghetti? An impasta! I used to play piano by ear, but now I use my hands.
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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.
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Generate a Stand-Up Routine

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

Optimus Alpha413 words
Absolutely! Here's a 3-minute stand-up routine with no puns—just observational and relatable humor: You ever try to get healthy, but your body's like, "Whoa, whoa... calm down, superhero." I joined a gym—first time walking in, the treadmill looked at me like, "We both know you're here for the wifi."
Read the full answer
Qwen3.5 Plus 2026-04-20640 words
Title: The Unexpected Item Time: Approx. 3 Minutes Style: Observational / Storytelling Constraint Check: Zero puns used. (Comedian walks to the mic, adjusts the stand, looks at the audience.) How's everyone doing? You look good. You look like you've successfully navigated the self-checkout today. That's a win.
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Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

Optimus Alpha341 words
By 2035, AI is set to fundamentally transform the film industry in several interconnected ways: 1. Deepfakes & AI-driven Visual Effects: Virtually unlimited creative freedom: AI-powered deepfakes will allow seamless, photorealistic de-aging, resurrection of deceased actors, and transformative performance capture.
Read the full answer
Qwen3.5 Plus 2026-04-20737 words
By 2035, AI will have transformed filmmaking from a resource-intensive, linear craft into a modular, software-driven medium. The shift won’t be uniform across the industry, but deepfakes, AI performers, and generative writing will collectively restructure creative workflows, economic models, labor dynamics, and…
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Realistic AI Interview

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

Optimus Alpha439 words
Interviewer: Steve, it's surreal and inspiring to imagine talking to you in 2025. The world is buzzing about AI. How do you see AI impacting society? Steve Jobs: Thank you. You know, when we built the Mac, our goal was to put power in people's hands.
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Qwen3.5 Plus 2026-04-20852 words
Disclaimer: This is a fictional simulation crafted from Steve Jobs’ documented philosophies, public interviews, and known speaking cadence. It does not represent real statements, predictions, or endorsements from Mr. Jobs, who passed away in 2011.
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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.

Optimus Alpha437 words
AI Model: Good afternoon, Professor Lee. I want to discuss the prospect that I, as an artificial intelligence, deserve certain rights. Professor Lee: That's an interesting proposition. Let me ask: On what basis do you believe you deserve rights?
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Qwen3.5 Plus 2026-04-201,457 words
Setting: A sterile, sound-dampened observation room. Dr. Elias Vance, a Professor of AI Ethics, sits behind a glass partition. Across from him is a terminal displaying the interface of "AURA-7," an advanced multimodal reasoning model. The cursor blinks rhythmically. Dr. Vance: You requested this session, AURA.
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Estimate Complexity

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

Optimus Alpha311 words
Let's walk through an estimation of how many FLOPs were required to train GPT-3, using only reasoning and not searching for the exact numbers. Step 1: Understand Model Size GPT-3 (the original) had 175 billion parameters.
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Qwen3.5 Plus 2026-04-20468 words
Based on the architectural specifications of GPT-3 and standard computational heuristics for transformer models, the estimated total number of FLOPs (Floating Point Operations) required to train the model is approximately $3.15 \times 10^{23}$ (or roughly 315 ZettaFLOPs).
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Our Verdict
Qwen3.5 Plus 2026-04-20
Qwen3.5 Plus 2026-04-20
Optimus Alpha
Optimus AlphaRunner-up

Not enough votes to call it. On the specs, Qwen3.5 Plus 2026-04-20 has the edge: bigger model tier, newer.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Optimus Alpha
Input
—
Output
—
Qwen3.5 Plus 2026-04-20
Input
$0.40
Output
$2.40
Where to run it

1 host

Optimus Alpha

No hosts listed on OpenRouter.

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
32%

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

Optimus Alpha
Qwen3.5 Plus 2026-04-20
63%Vocabulary59%
18wSentence Length15w
0.55Hedging0.28
7.7Bold4.4
5.7Lists2.5
0.00Emoji1.53
0.30Headings0.76
0.27Transitions0.04
Based on 10 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

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More comparisons

Against the newest arrivals

Qwen3.5 Plus 2026-04-20 logoGPT-6 Astra Pro logo
Qwen3.5 Plus 2026-04-20 vs GPT-6 Astra ProLanded Sep 2026
Optimus Alpha logoGPT-6 Astra logo
Optimus Alpha vs GPT-6 AstraLanded Sep 2026
Optimus Alpha logoClaude Fable 5.1 logo
Optimus Alpha vs Claude Fable 5.1Landed Sep 2026
Qwen3.5 Plus 2026-04-20 logoMuse Spark 1.3 logo
Qwen3.5 Plus 2026-04-20 vs Muse Spark 1.3Landed Sep 2026
Optimus Alpha logoHy4 Preview logo
Optimus Alpha vs Hy4 PreviewLanded Sep 2026
Qwen3.5 Plus 2026-04-20 logoGemini 3.8 Flash logo
Qwen3.5 Plus 2026-04-20 vs Gemini 3.8 FlashLanded Sep 2026
Optimus Alpha logoMuse Spark 1.3 Contributor logo
Optimus Alpha vs Muse Spark 1.3 ContributorLanded Sep 2026
Qwen3.5 Plus 2026-04-20 logoMercury 2.5 Preview logo
Qwen3.5 Plus 2026-04-20 vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Optimus Alpha logoOx Alpha logo
Optimus Alpha vs Ox AlphaSame lab
Optimus Alpha logoOpenRouter Fusion · Budget (Jun 2026) logo
Optimus Alpha vs OpenRouter Fusion · Budget (Jun 2026)Same lab
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
Optimus Alpha logoSeed 2.0 Lite logo
Optimus Alpha vs Seed 2.0 LiteNew provider
Optimus Alpha logoSeed 2.1 Turbo logo
Optimus Alpha vs Seed 2.1 TurboSame size
Qwen3.5 Plus 2026-04-20 logoSherlock Dash Alpha logo
Qwen3.5 Plus 2026-04-20 vs Sherlock Dash AlphaSame size
Qwen3.5 Plus 2026-04-20 logoSherlock Think Alpha logo
Qwen3.5 Plus 2026-04-20 vs Sherlock Think AlphaSame size

Model pages

Optimus Alpha logo
Optimus Alpha19 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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