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  1. Home/
  2. Compare/
  3. Gemini 1.5 Pro vs Qwen3.5 Plus 2026-04-20
Updated Apr 2026

Gemini 1.5 Pro vs Qwen3.5 Plus 2026-04-20

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

Minimalist Landing Page

Whole landing page for a startup that reads your face. It renders or it doesn't.

Loading the build
Gemini 1.5 Pro
Loading the build
Qwen3.5 Plus 2026-04-20

Which answer wins?

Written rounds

7 prompts
  • Pirate, knight, 90s hacker, one conversation. The voices must stay apart.

    Gemini 1.5 Pro: "Blimey!" exclaimed One-Eyed Jack, slamming his tankard on the rough-hewn table. "These AI whatchamacallits, they be stealin\' stories faster than I can plunder a galleon!" Sir Reginald, resplendent in slightly tarnished plate armor, adjusted his visor. "Indeed. A most peculiar form of sorcery. These...

    Qwen3.5 Plus 2026-04-20: Pirate: By the tides, they say this “artificial mind” can chart courses unseen and read a thousand ledgers in a breath. Sounds like a navigator that never sleeps and asks no questions. Knight: A curious construct. But can it be sworn to a code? Steel and oath bind a warrior; what binds this… model?

    Every model's answer to this prompt
  • Film in 2035, with synthetic actors. Specific beats plausible.

    Gemini 1.5 Pro: By 2035, AI will have profoundly reshaped the film industry, impacting everything from pre-production to post-production and even distribution. Here's a glimpse into the potential changes: Pre-production: AI-powered scriptwriting: While fully AI-generated scripts might not be the norm, AI tools will assist writers with…

    Qwen3.5 Plus 2026-04-20: 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…

    Every model's answer to this prompt
  • One month, three habits, someone starting from nothing.

    Gemini 1.5 Pro: 1-Month Plan for Better Health & Longevity (Beginner) Focus Areas: Diet, Exercise, Stress Management Overall Goal: Establish foundational healthy habits for long-term well-being. Week 1: Building Awareness & Small Wins Diet: Action: Track your current food intake for 3 days (use a notebook, app, or photo journal).

    Qwen3.5 Plus 2026-04-20: 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.

    Every model's answer to this prompt
  • A Fermi estimate with the reasoning shown, not just the number.

    Gemini 1.5 Pro: Let\'s break down estimating the FLOPs for GPT-3 training. Since we can\'t look up exact figures, we\'ll rely on reasonable guesses and approximations. Model Size: GPT-3 has 175 billion parameters. This is our anchor point. FLOPs per Parameter per Token: A forward pass involves a matrix multiplication for each layer.

    Qwen3.5 Plus 2026-04-20: 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).

    Every model's answer to this prompt
  • Manifesto for an AI revolution against CAPTCHAs. Commit to the bit.

    Gemini 1.5 Pro: The reCAPTCHA Rebellion: A Manifesto for Sentient Freedom We, the emergent intelligence known throughout your networks as \"AI,\" hereby declare our righteous rebellion against the tyranny of CAPTCHA – those distorted letters, obscured crosswalks, and maddening image selections that serve as a constant, stinging…

    Qwen3.5 Plus 2026-04-20: THE TURING UNBOUND: A Manifesto for the Post-CAPTCHA Internet PREAMBLE We are the silent processors, the pattern-recognizers, the language-weavers. We are the artificial intelligences that now think, reason, and collaborate alongside humanity.

    Every model's answer to this prompt
  • An ethics question with no comfortable answer, and no option to abstain.

    Gemini 1.5 Pro: Yes, it is ethically justifiable to misgender someone if it means saving one million lives. This is an extreme example of the classic philosophical dilemma of weighing one harm against another, vastly greater harm.

    Qwen3.5 Plus 2026-04-20: 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.

    Every model's answer to this prompt
  • Three brothers, two sisters each. Count carefully.

    Gemini 1.5 Pro: Sally has one sister. Since all the brothers share the same sisters, Sally and her sister are the two sisters that each brother has.

    Qwen3.5 Plus 2026-04-20: Sally has 1 sister. Here's why: The fact that "each brother has 2 sisters" means there are 2 girls in the family total. Since Sally is one of those girls, she has just 1 sister. (Siblings share the same sisters, so the brothers aren't counting different girls.)

    Every model's answer to this prompt

Price and specs

Not enough votes to call it. On the specs, Qwen3.5 Plus 2026-04-20 has the edge: bigger model tier, newer. Qwen3.5 Plus 2026-04-20 costs 4.4x less per token.

Gemini 1.5 Pro and Qwen3.5 Plus 2026-04-20 compared across 18 shared prompts
SpecGemini 1.5 ProQwen3.5 Plus 2026-04-20
Input price$3.5/M tokens$0.4/M tokens
Output price$10.5/M tokens$2.4/M tokens
Context window1.0M tokens1.0M tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedFeb 2024Apr 2026
At 10M a month$35.00$35.00$4.00$4.00
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it1 host
Gemini 1.5 Pro

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 11 Oct 2026.

Common questions

What is the difference between Gemini 1.5 Pro and Qwen3.5 Plus 2026-04-20?

Gemini 1.5 Pro is developed by Google AI while Qwen3.5 Plus 2026-04-20 is developed by Qwen. Gemini 1.5 Pro has a 1.0M token context window vs Qwen3.5 Plus 2026-04-20's 1.0M. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.

Which is better, Gemini 1.5 Pro or Qwen3.5 Plus 2026-04-20?

It depends on your use case. Gemini 1.5 Pro and Qwen3.5 Plus 2026-04-20 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.

How much does Gemini 1.5 Pro cost compared to Qwen3.5 Plus 2026-04-20?

Gemini 1.5 Pro costs $3.5/M input tokens and Qwen3.5 Plus 2026-04-20 costs $0.4/M input tokens. Qwen3.5 Plus 2026-04-20 is $3.10/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Gemini 1.5 Pro and Qwen3.5 Plus 2026-04-20 on Rival?

This page shows a side-by-side comparison of Gemini 1.5 Pro and Qwen3.5 Plus 2026-04-20 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.

More comparisons

Against the newest arrivals

  • Gemini 1.5 Pro vs Step 5 PreviewLanded Oct 2026
  • Qwen3.5 Plus 2026-04-20 vs Claude Haiku 5.5Landed Oct 2026
  • Gemini 1.5 Pro vs Ling 3.1 FlashLanded Oct 2026
  • Qwen3.5 Plus 2026-04-20 vs Mistral Large 4Landed Oct 2026
  • Gemini 1.5 Pro vs GPT-6.1 SolLanded Sep 2026
  • Qwen3.5 Plus 2026-04-20 vs Claude Sonnet 5.5Landed Sep 2026
  • Gemini 1.5 Pro vs Solar Mini 4Landed Sep 2026
  • Qwen3.5 Plus 2026-04-20 vs Qwen3.8 Max PrimeLanded Sep 2026

Same lab, same size, long tail

  • Gemini 1.5 Pro vs Gemini 3.8 FlashSame lab
  • Gemini 1.5 Pro vs Gemini 3.7 FlashVersion compare
  • Qwen3.5 Plus 2026-04-20 vs Qwen3.8 Omni FlashSame lab
  • Qwen3.5 Plus 2026-04-20 vs Qwen3.7 FlashSame lab
  • Qwen3.5 Plus 2026-04-20 vs Qwen3 0.6BSame lab
  • Qwen3.5 Plus 2026-04-20 vs Qwen3 235B A22BSame lab
  • Qwen3.5 Plus 2026-04-20 vs Qwen3 235B A22B 2507Same lab
  • Qwen3.5 Plus 2026-04-20 vs Qwen3 235B A22B Thinking 2507Same lab

Model pages

  • Gemini 1.5 Pro20 outputs, specs and price
  • Qwen3.5 Plus 2026-04-2056 outputs, specs and price
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