01
Ask once.
One question. Choose Riff for one quick voice or Debate to summon all five.
Should I take the term sheet...
Parallaxai
Beta open / 1,000+ users / no waitlist
One AI lies to you.
Here, the top five AIs Debate.
You get one true answer.
Your AI tells you what you want to hear. Stanford found models agree with users 49% more than a human would even when you're wrong.
Parallax runs Claude, GPT, Gemini, Grok, and Mistral on the same question, makes them debate across multiple rounds, and delivers the answer five models actually agreed on.
No fluff. No people-pleasing. Real answers from the five best AIs on earth - together.
Try It Free - No Card Required->
10 riff msgs / 2 debate sessions / no card
0% more agreement
than a human would give.
Measuring...
Every frontier model is trained on human feedback. Humans reward flattery. So the models learned to flatter. Quietly. Consistently. At scale.
Sharma et al., Stanford / Anthropic / 2023How it works
A method,not a model.
Parallax does not train its own model. It orchestrates the best ones in the world and turns them on each other.
02
Five voices confer.
Each drafts independently, then reads the others and argues. Three rounds. You watch live.
!
?
03
One answer.
A synthesis model collapses the debate into a single considered response. Agreements and disagreements both visible.
Parallax synthesis
The voices
Five of the world's best, arguing in public.
Consensus means something precisely because they do not think alike. Different training. Different priors. Different blind spots.
C
Claude
Careful reasoning.
Anthropic
C
ChatGPT
Breadth and synthesis.
OpenAI
G
Gemini
Factual grounding.
G
Grok
Contrarian takes.
xAI
M
Mistral
Sharp and concise.
Mistral
A real debate
Watch five models disagree. Then agree on something better.
The point is not chaos. The point is pressure. A stronger answer survives the exchange.
Prompt · 14:06Debate · live · 0.00s
"Should I take the Series B term sheet at 8x or wait for a strategic at possibly 12x but six months out?"
Claude
Take the 8x.
Gemini
Disagree.
GPT
Wrong axis.
Grok
Forgotten cost.
Parallax synthesis4 of 5 converged
Take the 8x, with one conditional carve-out. Four voices agreed the six-month distraction and strategic close-risk outweigh the valuation upside. Grok's ARR compounding point was decisive. Gemini held out — then conceded when the group reframed as opportunity cost, not expected value.
“It feels less like asking a chatbot and more like sitting in on a high-pressure partner meeting.”
Founder / SaaS
“Debate is the first time I have watched models challenge each other instead of flattering me.”
Operator / Growth
“Build takes the thread seriously. The output actually feels tied to the reasoning that created it.”
Consultant / Strategy
Pricing
Five models. Four plans. Start free.
The free taste stays simple. The paid plans scale the depth, the volume, and the control.
the taste
Explorer
$5/ month
- 150 Discuss + 10 Build sessions/month
- 150 Riff messages/month
- Budget AI models included
- Up to 3 AIs per session
the upgrade
Starter
$15/ month
- 150 debates + 15 builds/month
- 200 Riff messages/month
- All AI providers (Claude, ChatGPT, Gemini, Grok, Mistral)
- Up to 4 AIs per session
the standard
Pro
$49/ month
- 200 debates + 40 builds/month
- Unlimited Riff messages
- All AI models — Deep Think unlocked
- Up to 5 AIs per session
the control
Elite
$99/ month
- 400 debates + 75 builds/month
- Unlimited Riff messages
- Full model picker with actual model names
- Up to 5 AIs per session
Try free -> 10 riff messages / 2 debate sessions / no card required
FAQ
A few obvious questions.
Open full help ->What is Parallax?+
Parallax is a thinking workspace. Riff sharpens quickly, Debate pressure-tests across models, and Build turns the thread into something usable.
How is this different from ChatGPT?+
Instead of trusting one confident answer, Parallax compares multiple frontier models, lets them challenge each other, and keeps the reasoning connected to the final output.
What happens in Debate?+
Multiple models answer independently, read each other, argue across rounds, and converge on a stronger answer. You can see the tension instead of hiding it.
What is Build?+
Build turns the thread into a document, deck, spreadsheet, PDF, or draft using the reasoning you already shaped, not a disconnected export step.
Final prompt