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One Prompt.
Four Perspectives.

Stop switching between AI tabs. AI Verdict asks ChatGPT, Claude, Gemini, and Perplexity at the same time, then turns their answers into one clear verdict.

No API Keys Required   |   Uses Your Existing Accounts   |   One-Time Purchase

AI Verdict dashboard showing four AI models answering a health question simultaneously

Four AI models. One prompt. Responses stream in simultaneously.

AI Verdict showing two AI panels side by side with The Verdict Engine below

Two panels side by side — compare answers directly, then scroll down for The Verdict.

The Verdict Engine showing Key Mentions, Common Ground, Insight Gap, and Final Verdict

The Verdict Engine — Key Mentions, Common Ground, Insight Gap, and a Final Verdict.

River layout showing AI responses stacked vertically for deep reading

River layout — read responses top to bottom for deeper comparison.

AI Verdict in light mode showing Python vs JavaScript responses with the Verdict Engine

Light mode — switch themes any time with the toggle in the top bar.

AI Verdict settings showing model selection, Verdict Lead, and Custom Summarization Prompt

Pick your models, set your Verdict Lead, and customize the synthesis prompt.

How it Works

Three steps from install to insight.

1

Zero Setup for Most Models

ChatGPT, Gemini, and Perplexity work right away with no login needed. To use Claude or save your history, just sign into those accounts in your browser.

2

Type One Prompt

Ask your question once in the AI Verdict panel. It sends your prompt to all active models simultaneously. You watch all responses stream in at the same time, in one place.

3

Compare, Spot Differences, Get The Verdict

See responses side-by-side and instantly spot where models agree or contradict each other. Pro users can trigger The Verdict Engine for a synthesized consensus that highlights the most reliable answer.

Free tier: ChatGPT and Gemini. Pro: all four models plus The Verdict Engine.

Everything You Need to Stop Guessing

Built for people who take their AI research seriously. One interface, all your models, zero tab-switching.

Up to 4 AIs, 1 Prompt

Query multiple AI models simultaneously. No copying, no switching tabs, no repetition.

Free: ChatGPT and Gemini  ·  Pro: all four

Real-time Streaming

Watch your active models generate responses live, side-by-side as they stream in. No waiting for one to finish before seeing the next.

The Verdict Engine

PRO

One AI synthesizes all four responses into a single consensus, surfacing agreement, disagreement, and the most reliable answer.

Choose Your Verdict Lead

PRO

Pick which AI generates the verdict. Trust the model you trust most to deliver the final synthesis.

Custom Verdict Prompts

PRO

Write your own verdict instructions. Ask for a structured comparison, a pros and cons list, a recommendation, or a devil's advocate view.

No API Keys Ever

Uses your existing browser sessions. If you already use these AIs, you are already set up. Zero extra billing from AI providers.

Dashboard and River Layouts

Switch between a grid view for scanning all models at once, or a stacked river view for focused, deep reading.

Multi-turn Conversations

Follow up with your active models in the same conversation thread. Context is maintained across turns automatically.

PRO FEATURE

Meet The Verdict Engine

Getting four different answers is useful. Knowing which answer to trust is the hard part. The Verdict Engine sends all responses to a lead AI you choose and synthesizes a single, reasoned conclusion.

Flags when one AI says something the others do not
Choose your lead model - Claude, GPT-4, or Gemini
Override the prompt - pros/cons, recommendation, table, or any format
Works for research, health, finance, coding, and any decision
Interactive Example

Lead model and prompt are fully customizable per query

Prompt: "What are the long-term health effects of intermittent fasting?"

ChatGPT

Intermittent fasting (IF) can have both benefits and downsides long term, depending on the person, fasting style, diet quality, sleep, stress, and existing health conditions.

Common forms: 16:8, 5:2, and alternate-day fasting.

Potential long-term benefits
Weight management — Many naturally eat fewer calories and lose body fat.
Improved insulin sensitivity — May lower risk factors linked to Type 2 Diabetes, especially in overweight individuals.
Heart health markers — Improvements in blood pressure, triglycerides, LDL cholesterol, and inflammation.
Cellular repair — Fasting may trigger autophagy. Promising in animal studies; human evidence still limited.
Brain health — Early research suggests benefits for focus, brain metabolic health, and reduced neurodegenerative risk.

Possible downsides
• Fatigue, irritability, difficulty concentrating during adaptation
• Overeating during eating windows; social or lifestyle stress
• Poor nutrient intake if meals are unbalanced
• Loss of muscle mass without adequate protein and resistance training
• May worsen disordered eating, hormonal balance, sleep, or cortisol
• Some women report menstrual irregularities with aggressive fasting

What matters most
Total calorie intake, food quality, protein intake, exercise, sleep, and sustainability — not when you eat.

Who should be careful
Type 1 Diabetes, eating disorder history, pregnancy or breastfeeding, underweight individuals, certain medications.

Claude 75% more concise

Intermittent fasting (IF) has been studied with growing interest, and research points to several potential long-term health effects — both benefits and considerations.

Potential Benefits
Metabolic health: Improves insulin sensitivity, lowers blood sugar, reduces type 2 diabetes risk
Weight management: Lower body weight and reduced visceral fat linked to lower cardiovascular risk
Cardiovascular health: Lower LDL cholesterol, triglycerides, blood pressure, and inflammatory markers
Cellular repair: Autophagy linked to longevity and disease risk reduction; long-term human data still developing
Brain health: May support cognitive function, reduce neuroinflammation, and potentially lower Alzheimer's risk — animal studies promising
Longevity: Longer lifespan in animal models; early human data suggestive, not conclusive

Things to Watch
• Muscle loss without adequate protein and resistance exercise, especially in older adults
• Bone density concerns with long-term restrictive eating
• Hormonal disruption in some women with aggressive fasting
• Nutrient deficiencies with too-narrow eating windows
• Not appropriate for those with eating disorder history

The Bottom Line
Research is promising but long-term human studies are still limited. Effects vary by IF type, diet quality, age, sex, and individual health status.

Gemini

Research into long-term intermittent fasting IF effects is evolving. Short-term benefits are well-documented; multi-year outcomes are more complex and sometimes contradictory.

Potential Long-Term Benefits
Metabolic Flexibility: Body switches more efficiently between burning glucose and fat, improving energy and metabolic health over time
Cellular Repair (Autophagy): Hypothesized to reduce neurodegenerative disease risk and slow aging processes
Cardiovascular Health: Lower resting heart rates and reduced blood pressure in some cohorts; potentially lower lifetime heart disease risk
Blood Sugar Management: Helps maintain stable HbA1c levels, critical for preventing or managing Type 2 diabetes

Long-Term Risks
Cardiovascular Mortality: Very restrictive eating windows (≤8h/day) associated with higher cardiovascular death risk vs standard 12–16h windows, particularly in older adults
Muscle Mass Loss: Without adequate protein and resistance training, risk of sarcopenia and frailty increases
Nutritional Deficiencies: Difficult to get sufficient vitamins, minerals, and fiber — may lead to bone density loss over years
Hormonal Impact: May disrupt reproductive hormones; lower testosterone in men or irregular cycles in women

Expert Perspective
Major recent reviews conclude IF does not significantly outperform traditional calorie-controlled dieting for long-term weight maintenance in the general population.

Perplexity

Intermittent fasting (IF) shows mixed long-term effects — benefits like weight loss and improved cardiometabolic markers, but concerns around cardiovascular risks and lean mass loss. Most human data comes from trials lasting 6+ months in overweight adults; evidence beyond one year remains limited.

Key Benefits
Reduces body weight ~2.8 kg, BMI 1.4 kg/m², fat mass 3 kg, waist circumference 3.9 cm, fasting glucose 0.14 mmol/L, triglycerides 0.12 mmol/L, and diastolic BP 2.2 mmHg vs usual diets. Slightly edges continuous calorie restriction in fat mass loss (−0.7 kg) and HDL increases (+0.03 mmol/L).

Potential Risks
• Analysis of 20,000+ US adults linked <8-hour eating windows to 91% higher cardiovascular death risk vs 12–16h — especially with heart disease or cancer
• Long-term IF may cause lean mass loss (−0.8 kg), raising sarcopenia concerns
• Rodent data shows heart fibrosis after prolonged alternate-day fasting
• No superiority over continuous calorie restriction for cardiometabolic gains

Bottom Line
IF works mainly via calorie reduction, not unique timing effects. Consult a doctor before starting, especially with heart issues or medications.

· 14 sources cited

The Verdict Engine
The Verdict
Lead: Claude
View prompt used

You are an expert at finding common ground. Your goal is to combine multiple AI answers into one clear, single "Verdict".

Current User Query: "What are the long-term health effects of intermittent fasting?"

[AI responses — collected automatically, one per model]

Task:

1. Common Ground: Briefly list what all models agree on.

2. The Insight Gap: Highlight unique points or different views from individual models.

3. The Final Verdict: Provide a balanced summary that includes the best parts of every answer. Focus on being accurate and clear, and mention any main differences between the models.

Format using clean markdown with H3 headers (###).

Key mentions all models multiple models
TERM 25 FASTING 24 LONG 22 LOSS 15 INTERMITTENT FASTING 11 EATING 15 HEALTH 14 RISK 13 WEIGHT 9 MASS 8 BENEFITS 9 WEIGHT LOSS 5

Common Ground

All four models agree:
• IF can support weight loss and fat reduction, though it performs similarly to standard calorie restriction when calories are matched
• IF improves insulin sensitivity, blood sugar, triglycerides, blood pressure, and LDL cholesterol over time
Autophagy (cellular repair) is a promising mechanism, but long-term human evidence is still limited
Muscle loss is a real risk without adequate protein and resistance training
Hormonal disruption (especially in women), nutrient deficiencies, and disordered eating are legitimate concerns
• IF is not suitable for everyone — pregnant individuals, Type 1 diabetes, eating disorder histories
• Long-term human data beyond one year remains sparse

The Insight Gap

Perplexity stands out by citing a specific, quantified finding: a large observational study (20,000+ US adults) linking eating windows under 8 hours to a 91% higher cardiovascular death risk. It also provides concrete numbers (e.g., ~2.8 kg average weight loss, −0.8 kg lean mass) that the other models leave vague.

Gemini echoes the cardiovascular mortality concern and adds that the risk applies especially to older adults — a useful nuance. It also explicitly notes the risk of bone density loss from long-term restriction, which only Claude also mentions.

ChatGPT is the most practical and lifestyle-oriented, emphasizing social stress, sustainability, and the importance of eating quality over eating timing as the dominant factor. It's the most accessible but least specific on risks.

Claude is the most measured scientifically, noting that longevity benefits seen in animal models haven't been confirmed in long-term human trials, and flagging neuroinflammation and Alzheimer's risk reduction as areas of early-stage promise.

The Final Verdict

Intermittent fasting has a genuinely promising — but still incomplete — long-term health profile.

Likely benefits with consistent practice:
Modest improvements in body weight, visceral fat, insulin sensitivity, blood pressure, and cardiovascular risk markers. These effects are real, but roughly equivalent to what a well-structured calorie-controlled diet achieves. IF is a method, not a metabolic miracle.

Promising but not yet proven in humans:
Autophagy-driven cellular repair, protection against neurodegenerative disease, and longevity effects are exciting areas of research — strongly supported in animal models, but without definitive long-term human confirmation yet.

Genuine risks that deserve attention:
The most important caveat, flagged by Perplexity and Gemini, is a large observational study linking very narrow eating windows (under 8 hours) to significantly elevated cardiovascular death risk — particularly in older adults or those with existing heart disease. This doesn't mean IF is dangerous for everyone, but more aggressive protocols may carry risk that moderate ones don't. Muscle loss, bone density reduction, hormonal disruption, and nutritional gaps are additional real concerns, especially without thoughtful meal planning.

The practical takeaway:
For most healthy adults, a moderate IF approach (12:14 or 16:8 with adequate protein and whole foods) can be a sustainable and beneficial eating structure. Stricter protocols warrant more caution, especially with age or existing health conditions. Food quality, total nutrition, exercise, and sleep remain more influential than meal timing alone. Anyone with a complex health history should consult a physician before committing long-term.

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Frequently Asked Questions

Still have questions? Email us at aiverdict@proton.me

Do I need API keys to use AI Verdict?

No. AI Verdict uses your existing browser sessions - the same accounts you already use to access ChatGPT, Claude, Gemini, and Perplexity. No API keys, no developer accounts, no extra billing from AI providers.

Do I need to be logged in to each AI service?

Not always. ChatGPT, Gemini, and Perplexity work without logging in for basic use. Logging in is recommended if you want to save conversation history. Claude does require you to be signed in. Most users are already logged into these services in their browser, so setup is instant.

Which browsers are supported?

Chrome and all Chromium-based browsers including Edge, Brave, and Arc. Firefox support is in development.

Is this a monthly subscription?

No. AI Verdict Pro is a one-time payment of $39.99 for lifetime access. No recurring charges, no annual renewals.

Is my data private? Does AI Verdict see my prompts?

Your prompts and AI responses never touch our servers. Everything runs locally in your browser, directly between you and the AI services you are already using. We have a Local-First design philosophy. See our Privacy Policy for full details.

What exactly is The Verdict Engine?

The Verdict Engine is a Pro feature that collects all active AI responses and sends them to a lead model you choose. That model synthesizes a consensus, highlighting where they agree, where they differ, and what the most reliable answer is. You can also override the default summarization prompt with your own instructions - ask for a pros/cons list, a structured comparison, a recommendation, or any format that suits your workflow.

Can I use AI Verdict with free-tier AI accounts?

Yes. AI Verdict works with free accounts across all supported models. Some platform-level restrictions from the AI providers themselves (such as rate limits on free tiers) may still apply.

What if one AI is down or I am not logged in?

That model's panel will show an error or a prompt to sign in. The other models continue to work normally. AI Verdict is designed to be resilient to individual model failures.