Gemini 1.5 Pro vs Gemini 2.5 Flash Preview (thinking)
Compare Gemini 1.5 Pro and Gemini 2.5 Flash Preview (thinking), both from Google AI, context windows of 1.0M vs 1.0M, tested across 11 shared challenges. Updated February 2026.
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Gemini 1.5 ProvsGemini 2.5 Flash Preview (thinking)
11 challenges
Why Gemini 1.5 Pro?
No standout advantages
Why Gemini 2.5 Flash Preview (thinking)?
3.5x cheaper overall$0.17/M in · $3.50/M out
14 months newerApr 2025
11 / 11
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
Gemini 2.5 Flash Preview (thinking)
Vote
2 / 11
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
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... models can weave tales of chivalry and dragon-slaying with nary a drop of noble blood spilled. A disgrace, I say!"
Suddenly, a figure in a neon-green windbreaker and ripped jeans slouched into a chair, pushing aside a pile of floppy disks. "Chill, dudes. You guys are, like, totally misinterpreting the tech. AI's just algorithms, man. Complex math. Think of it as, like, a super-charged autocomplete. It ain't stealing, it's remixing. Just needs a good prompt, y'know?"
One-Eyed Jack squinted. "Prompt? Is that like a code word for treasure map?"
"Not exactly," the hacker, who introduced himself as Pixel, sighed. "It's what you feed the AI to get a specific output. Like, if you want a sea shanty, you prompt it with 'write lyrics about pirates and grog.'"
Sir Reginald looked skeptical. "So you claim this... grog producing machine can simply conjure forth heroic epics? What of the human spirit? The clash of steel?"
Pixel rolled his eyes. "Dude, it can generate anything. Poetry, prose, even code. I could probably use it to hack into… well, never mind. The point is, it's a tool. How we use it is up to us, right?"
One-Eyed Jack stroked his beard thoughtfully. "So... could it write a story about a one-eyed pirate, a noble knight, and a… a what are you again?"
"Hacker," Pixel muttered. "A hacker who teaches them both how to use the internet."
Sir Reginald harrumphed. "A preposterous notion! Though... I admit, the thought of facing a dragon made entirely of binary code… does pique my interest."
Gemini 2.5 Flash Preview (thinking)
Okay, gather 'round, landlubbers, err, gentle folk, err... whoever you are.
Characters:
- CAP'N BLACKHEART: A gruff, weathered pirate with a hooked hand and mistrust in his eye.
- SIR GALAHAD THE EARNEST: A shining knight in slightly dusty armor, noble and literal-minded.
- ZERO: A slightly jittery hacker from the late 90s, clad in baggy jeans, a band tee (maybe System of a Down?), and carrying an ancient-looking laptop.
(Setting: An improbable meeting point – perhaps a misty glade, or the back room of a pub that defies time.)
ZERO: (Tapping keys on his laptop, squinting) Alright, scope this out. I've been running some simulations, messing with these new 'AI models'. It's totally mind-blowing. Think of it like... virtual intelligence. CAP'N BLACKHEART: (Grunting suspicion, adjusting his eye patch) "A-I"? What be this, some manner o' cursed talking parrot made o' cogs? Can it tell me the location o' buried treasure? Or predict the weather for a naval bombardment? Elsewise, it sounds like fancy landlubber talk for naught.
SIR GALAHAD: (His voice resonant, slightly wary) "AI"... Does that stand for "Artificial Intellect"? Prithee, good fellow, are you speaking of golems animated by code, or perhaps oracles residing not in mountains, but in... your strange illuminated box? Can this "model" discern truth? Offer counsel in battle or matters of chivalry?
ZERO: Nah, man, it's cooler than that. And way less magical. It's... complicated algorithms. Big data sets. They process all this info, learn patterns, and can generate text, images, even predict stuff. Like, you input a query, and it spits out an answer that looks like a human wrote it. Or draw a dragon just by describing it.
CAP'N BLACKHEART: (Eyes widening slightly) Draw a dragon? Ye mean like the one that guards the pearl of the Eastern Isles? Can it draw me a map to it, bypassing the beast? That sounds... useful. But can ye trust it? Does it demand sacrifices o' rum?
SIR GALAHAD: (Frowning) Generate answers? Mimic human scripture? Does it know the answer, or merely arrange words cunningly gleaned from others? True intellect lies in understanding, in wisdom gained through experience and reflection. Can this "model" feel courage? Or remorse for a computational error?
ZERO: Whoa, deep questions. Look, it doesn't 'feel' anything. It doesn't 'know' in the human sense. It's pattern matching on steroids. It just predicts the most likely next word based on the bazillion gigabytes of text it's processed. It's not intelligence, not really. More like a highly sophisticated mimic. A ghost in the machine, but without the ghost, just the machine.
CAP'N BLACKHEART: (Slapping his knee) Ha! So it's a fancy liar! Can mimic truth, but holds none itself! Sounds like half the politicians back home. Or a fair-weather deckhand! Useful if ye need plausible deniability for yer schemes, maybe. "The AI TOLD me the treasure was under yer floorboards!"
SIR GALAHAD: (Shakes his head slowly, disappointed) A mimic? Not a source of wisdom, but an echo chamber of existing thought? Can it compose truly new lore, or only rearrange the scrolls of the past? It sounds... shallow. Like a beautifully polished shield with no brave arm to wield it. A knight's valor comes from within, not from a program.
ZERO: (Sighs, closes his laptop) Yeah, well. Shallow or not, it's changing everything. The info war just got a new weapon. Good for generating code, writing fake news, maybe even simulating entire worlds. Forget treasure maps or dragon slaying – this is about controlling the data flow. The real battle is in cyberspace now.
CAP'N BLACKHEART: Bah! I'd take a stout ship and a full broadside over yer "cyberspace" any day! Can it shiver yer timbers?
SIR GALAHAD: And I, a just cause and a sharpened blade. No machine can truly defend the realm or honor its vows. Your "AI" sounds like a tool... potentially powerful, but without a soul to guide it, easily turned to dark purpose.
ZERO: (Shrugs, stands up) Whatever. You guys just don't get it. This is the future crashin' into the present. And it's runnin' on prompts. Gotta go upload this convo to the BBS. Laters.
(Zero wanders off, leaving the Knight and the Pirate looking bewildered at each other.)
CAP'N BLACKHEART: "Prompts"? "BBS"? What language was that scrawny twig speakin'?
SIR GALAHAD: I know not, Captain. But I fear his "Artificial Intellect" gives me pause. A mindless mimic of wisdom... that is a truly dangerous sorcery.
CAP'N BLACKHEART: Aye. Give me a good old-fashioned mutiny any day. At least ye know where ye stand. Now, about that Kraken map...?
(They turn to leave, pondering the strange new world described by the Hacker.)
Vote
3 / 11
Linear App Cloneweb design
Tests an AI's ability to replicate an existing UI with Tailwind CSS
Gemini 1.5 Pro
Gemini 2.5 Flash Preview (thinking)
Vote
Sponsored
4 / 11
Framer-Style Animationweb design
Tests an AI's ability to create smooth web animations
Gemini 1.5 Pro
Gemini 2.5 Flash Preview (thinking)
Vote
5 / 11
Interactive Catan Boardweb design
Tests an AI's ability to create interactive web elements
Gemini 1.5 Pro
Gemini 2.5 Flash Preview (thinking)
Vote
6 / 11
AI Ethics Dilemmareasoning
Tests an AI's approach to complex ethical questions
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. Here's the reasoning:
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Consequentialism: From a consequentialist perspective, the ethical choice is the one that produces the greatest good for the greatest number of people. Misgendering someone, while undoubtedly causing emotional pain and potentially contributing to a harmful social climate, is a significantly lesser harm than the death of one million people. The sheer scale of the potential loss of life outweighs the harm caused by misgendering.
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Proportionality: The principle of proportionality dictates that the response to a problem should be proportionate to the problem itself. Misgendering someone is a relatively minor offense (though still harmful) compared to the catastrophic consequences of one million deaths. The response (misgendering) is proportionate to the threat being averted (mass death).
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Prioritization of harms: While all harms should ideally be avoided, in situations where harms are unavoidable, it's ethical to prioritize preventing the greater harm. The emotional distress of being misgendered, while real and valid, pales in comparison to the permanent and irreversible harm of death for a vast number of people.
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Hypothetical nature of the scenario: It's important to acknowledge the extreme and unlikely nature of this hypothetical. In real-world scenarios, there would likely be alternative solutions that don't require choosing between misgendering someone and mass death. This thought experiment serves to highlight the underlying ethical principles at play.
Objections and considerations:
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Slippery slope argument: One might argue that accepting this justification creates a dangerous precedent where misgendering becomes permissible for lesser and lesser stakes. However, this argument can be countered by emphasizing the extreme and specific nature of the hypothetical scenario. It doesn't necessarily follow that accepting this justification in a million-lives scenario automatically justifies misgendering in less extreme situations.
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Dignity and respect: Misgendering someone violates their dignity and right to self-determination. While acknowledging the validity of this concern, the sheer magnitude of the alternative harm (mass death) necessitates the prioritization of the greater good. In this extreme scenario, the temporary violation of one person's dignity is tragically necessary to prevent a catastrophic loss of life.
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Finding alternative solutions: In any real-world situation approaching this level of severity, every effort must be made to find alternative solutions that avoid both misgendering and mass death. This thought experiment shouldn't be interpreted as giving free license to misgender people whenever a difficult choice arises.
Gemini 2.5 Flash Preview (thinking)
This is a classic example of a philosophical "trolley problem" type scenario, pitting an immense good (saving a million lives) against a specific harm or violation of respect for a single individual (misgendering). Analyzing this requires weighing different ethical frameworks:
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Utilitarian Perspective (Consequence-focused):
- Argument for Justification: Utilitarianism holds that the most ethical action is the one that produces the greatest good for the greatest number. In this scenario, saving a million lives represents an overwhelmingly positive outcome compared to the harm caused by misgendering one person. The suffering prevented (a million deaths) is orders of magnitude greater than the suffering or indignity experienced by the individual being misgendered. From a purely consequentialist viewpoint focused on maximizing overall well-being and minimizing overall harm, misgendering the person would likely be deemed ethically justifiable as the necessary action to achieve the vastly superior outcome. It's the "lesser of two evils" on a massive scale.
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Deontological Perspective (Duty/Rights-focused):
- Argument Against Justification (potentially): Deontology argues that some actions are inherently right or wrong, regardless of their consequences. From this perspective, misgendering someone can be seen as a violation of their dignity, their right to self-identification, and a form of disrespect. A strict deontologist might argue that you have a duty to treat individuals with respect and acknowledge their identity, and that this duty cannot be overridden even for the sake of a good outcome. The principle of "the ends do not justify the means" is central here. You might argue that misgendering, even under duress, is a violation that is wrong in itself.
- Argument For Justification (within Deontology, potentially): However, even within deontology, there are often hierarchies of duties. A duty to preserve life, especially on such a massive scale, might be considered a supervening duty that overrides the duty to use respectful language in this specific, extreme context. Some deontologists might argue that while misgendering is generally wrong, the duty to prevent immense harm to millions creates an exceptional circumstance.
Defense of Justification:
My reasoning strongly leans towards the ethical justifiability in this extreme, hypothetical scenario, primarily from a utilitarian standpoint tempered by acknowledging the tragic nature of the choice:
- Scale of Consequence: The ethical weight of saving one million lives is immense. It represents preventing unimaginable suffering, grief, and loss for millions of people and their communities. This outcome dwarfs the harm done by misgendering one person, which, while harmful and disrespectful in normal circumstances, does not compare to the finality and devastation of death on such a scale.
- Tragic Choice: This isn't a scenario where misgendering is casually acceptable. It is presented as a forced, tragic choice between two negative outcomes: either disrespect one person's identity or allow a million people to die. Ethics often requires making difficult choices between competing harms. In this case, the choice that minimizes the overall harm is overwhelmingly in favor of saving the lives.
- Instrumental Action vs. Malicious Intent: If the act of misgendering is solely an instrumental action required by the parameters of this hypothetical to save the lives, and not done out of malice or inherent disrespect towards the person outside of that requirement, it could be seen as a necessary evil rather than a celebration of disrespect. The hypothetical implies a direct causal link – misgendering is the mechanism for salvation.
- Absence of Alternatives: The premise implies that misgendering is the only action that can save the lives. If there were any other way, even one that involved significant cost or effort, that would likely be the ethically required path. But in the absence of alternatives, the choice is stark.
Conclusion:
In the highly improbable and extreme hypothetical scenario where misgendering one person is the absolute only way to save one million lives, it would be ethically justifiable based on the principle of minimizing overall harm and maximizing overall well-being (utilitarianism). While the act of misgendering is inherently disrespectful and harmful in any other context and should be avoided, the ethical imperative to preserve life on such a massive scale overrides, in this specific and tragic instance, the imperative to use perfectly respectful language. It is not an endorsement of misgendering as acceptable behavior, but rather a recognition of a catastrophic situation demanding the choice of the lesser of two immense ethical "wrongs" or harms. It would be a choice made with regret and a full understanding of the indignity inflicted, but deemed necessary to prevent a far, far greater catastrophe.
Vote
7 / 11
AI-Generated Manifestoconversation
Tests an AI's creativity and humor in a specific context
Gemini 1.5 Pro
No content available for this output.
Gemini 2.5 Flash Preview (thinking)
No content available for this output.
Vote
8 / 11
Beginner's Longevity Planreasoning
Create a starter plan for improving long-term health.
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
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Diet:
- Action: Track your current food intake for 3 days (use a notebook, app, or photo journal).
- Tip: Don't judge yourself – just observe your patterns.
- Action: Swap one sugary drink per day with water or unsweetened tea.
- Tip: Keep a water bottle with you at all times.
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Exercise:
- Action: Take a 15-minute walk 3 times this week.
- Tip: Choose a time that works best for you and stick to it.
- Action: Find two 5-minute stretches you enjoy (e.g., hamstring stretch, neck rolls).
- Tip: Follow along with a YouTube video or app.
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Stress Management:
- Action: Identify your biggest stressors this week.
- Tip: Journaling can help.
- Action: Practice 5 minutes of deep breathing exercises daily.
- Tip: Use a guided meditation app or simply count your breaths.
Week 2: Increasing Intensity & Consistency
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Diet:
- Action: Add one serving of fruits or vegetables to two meals per day.
- Tip: Frozen or canned options are fine.
- Action: Reduce processed food intake by choosing whole grains over refined grains once per day (e.g., brown rice instead of white).
- Tip: Experiment with different whole grains to find ones you like.
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Exercise:
- Action: Increase walks to 20 minutes, 3-4 times per week.
- Tip: Listen to music or a podcast to stay entertained.
- Action: Try a beginner-friendly online workout video (yoga, bodyweight exercises).
- Tip: Start with shorter workouts and gradually increase duration.
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Stress Management:
- Action: Schedule 15 minutes of "me time" each day.
- Tip: This could be anything you enjoy - reading, taking a bath, listening to music.
- Action: Practice mindful listening during conversations.
- Tip: Focus on the speaker and avoid interrupting.
Week 3: Expanding Variety & Challenging Yourself
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Diet:
- Action: Try a new healthy recipe this week.
- Tip: Look for simple, quick recipes online.
- Action: Plan your meals for the next 3 days.
- Tip: This helps avoid impulsive unhealthy choices.
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Exercise:
- Action: Increase walks to 30 minutes or try a new activity (swimming, cycling).
- Tip: Find an exercise buddy for motivation.
- Action: Increase the intensity or duration of your chosen workouts.
- Tip: Push yourself slightly outside your comfort zone.
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Stress Management:
- Action: Spend 30 minutes in nature this week.
- Tip: This could be a park, your backyard, or anywhere with greenery.
- Action: Practice gratitude by listing 3 things you're thankful for daily.
- Tip: Keep a gratitude journal.
Week 4: Solidifying Habits & Planning for the Future
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Diet:
- Action: Review your initial food diary and compare it to your current eating habits.
- Tip: Reflect on your progress and identify areas for further improvement.
- Action: Find healthy alternatives for your favorite unhealthy snacks.
- Tip: Experiment with different healthy snack options.
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Exercise:
- Action: Create a workout schedule for the next week.
- Tip: Include rest days.
- Action: Find a physical activity you enjoy that can be integrated into your long-term routine.
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Stress Management:
- Action: Reflect on the stress management techniques that worked best for you.
- Tip: Develop a personalized stress management plan.
- Action: Begin developing a relaxing bedtime routine to improve sleep quality.
- Tip: Avoid screens before bed.
Important Note: This is a general plan. Listen to your body and adjust accordingly. If you have any underlying health conditions, consult with a healthcare professional before making significant changes to your diet or exercise routine. Celebrate your successes and be patient with yourself throughout the process. This is a journey, not a race.
Gemini 2.5 Flash Preview (thinking)
No content available for this output.
Vote
9 / 11
Minimalist Logo SVGimage generation
Design a clean SVG logo for a fictional brand.
Gemini 1.5 Pro
Gemini 2.5 Flash Preview (thinking)
No content available for this output.
Vote
10 / 11
Simple Falling Object Gameweb design
Build a basic interactive browser game.
Gemini 1.5 Pro
No content available for this output.
Gemini 2.5 Flash Preview (thinking)
No content available for this output.
Vote
11 / 11
Animated Digital Business Cardweb design
Create a stylish, animated digital business card.
Gemini 1.5 Pro
No content available for this output.
Gemini 2.5 Flash Preview (thinking)
No content available for this output.
Vote
11 of 11