The AI verification layer

When one AI isn’t enough, MULTL is the answer.

Five frontier AIs. One verified truth. Zero hallucinated confidence.

MULTL is the answer for anyone who needs the certainty that no single AI model can give you.

Try free — no signup See the Answer from 5 Top Tier AI ↓

3 free questions · No account needed · No credit card

Powered byGPT-5.5ClaudeGeminiPerplexityLlama 4

MULTL Best Verified Answer — 99% High confidence

Built-in Hallucination Detector

AI lies with confidence.
MULTL catches it every time.

Every answer runs through our Hallucination Detector — automatically flagging unsupported claims, outdated information, and contradictions across all 5 models. No other AI tool does this.

5 Models

Cross-Checked

Real-time

Claim Verification

Zero

Tolerance for Drift

🛡️Flags unsupported claims automatically

⚠️Detects when models disagree on facts vs opinion

🛡️Surfaces outdated information before it misleads

See it catch a hallucination → Try Deep mode

🛡️HALLUCINATION DETECTOR∧

3 possible hallucinations detected

⚠

OpenAI’s response reflected pre-May 2024 data and is now outdated. Llama’s response was completely incoherent.

⚠️ Possible Hallucinations

These claims could not be independently verified across models — corrected in the final answer.

OpenAI (gpt-4o) stated Tsai Ing-wen is still President — outdated, accurate only before May 2024.

Llama produced a completely incoherent, looping response and failed to name Lai Ching-te correctly.

Real results, verified by 5 frontier AI models

MULTL AI running on multiple devices — Hallucination Detector, confidence scores, source trail

The problem with one AI

Every single AI sounds confident.
That’s the problem.

GPT will tell you one thing. Claude another. Gemini something else. And each will sound certain.

So who do you trust when the stakes are real?

MULTL doesn’t ask you to choose. MULTL asks all of them — and shows you the truth that holds up across every model and every source.

This is multi-reasoning. This is what verification actually means.

AI models produce different answers to identical prompts — and none warn you when they disagree

Confidence scores in most AI systems are not calibrated to factual accuracy

Source citations from AI are often unverified or hallucinated outright

Built for certainty, not for speed

MULTL is the first AI system designed around one principle.

No answer is final until it’s been verified against itself.

Agreement Score

See which frontier models concur, which dispute, and by how much — before you decide what to believe.

Confidence Score

Calibrated to evidence, not assertion. MULTL synthesizes agreement, source quality, and contradiction detection into one number.

Hallucination Detection

Flags unsupported claims automatically. Separates stance disagreement from factual contradiction — it knows the difference.

Source Trail

Every claim, every URL, every reliability signal — surfaced from web sources when available. Where missing, MULTL says so.

Raw Model Transparency

See exactly what GPT-5.5, Claude Opus, Gemini Pro, Perplexity, and Llama said — unfiltered, so you can evaluate for yourself.

Four Verification Modes

Fast, Standard, Deep, Critical — each tier adds more frontier AI coverage, web access, and synthesis depth.

A different approach

The question isn’t which AI is smartest.

The question is: how do we evaluate confidence?

You ask a question

MULTL queries five frontier AI models simultaneously

You see agreement, contradictions, and source support — not just one answer

The promise we’re building toward

MULTL will be the answer for anyone who demands the highest certainty.

We are building a system where hallucinations don't survive contact with five frontier models and a Judge that refuses to settle for "probably."

We're not there yet. But we're closer than anyone else. And every query you run makes us sharper.

This is multi-reasoning. And nothing else even comes close.

When your answer has to be right.

Researchers

For the researcher whose citation will outlive them.

Lawyers

For the lawyer whose client is counting on the brief.

Founders

For the founder betting capital on a market read.

Developers

For the developer whose code can't fail in production.

Analysts

For the analyst whose number will move a decision.

Students

For the student who refuses to submit a hallucination.

MULTL is for anyone who has stopped trusting one AI to be right — and is ready to verify with five.

Stop guessing. Start verifying.

Start with 3 free questions.

No account required. See how models compare on your question.

Try MULTL free now

Or create a free account and unlock 100 credits across all four verification modes.