About Quartz
More perspectives.
Your own conviction.
Quartz is an AI workspace that helps students, founders, researchers, and investors compare perspectives on research, decisions, and writing.
What Quartz does
Research with another perspective
Ask a question and compare answers from three leading AIs. Web search and source links help you investigate what they agree on, what they dispute, and what deserves a closer look.
Think through a decision
Bring a plan, a tradeoff, or an idea you are unsure about. Follow up on the strongest objection or the most promising alternative, so you can move forward with reasons you understand.
Give your own work another look
Attach a paper, a presentation, or a draft and ask the panel to examine it. Compare the feedback, star an answer worth keeping, or copy the passages you want to use in your work.
What makes Quartz different
One question, three perspectives
Quartz lets you choose up to three models, including options from OpenAI, Anthropic, and Google, in a single panel. You can weigh their answers to the same question without rebuilding your brief across separate ChatGPT, Claude, and Gemini conversations.
The comparison is the starting point
Poe also supports multi-bot conversations. Quartz is organized around three answers side by side, so the first thing you can do is compare their reasoning and choose where to go next.
A follow-up can change the direction
Continue from the answer that gives you a useful lead, and keep questioning it. The first response is a starting point for a conversation, not a final recommendation you have to accept.
Your own material, in the conversation
Attach up to 20 files to a chat, including PDFs, Word documents, spreadsheets, slides, images, and text. Ask the panel about the material you are actually working with, so its answers have a shared point of reference.
One link to keep the discussion going
Share a Quartz chat by link so someone else can read the question and the different responses. A guest can ask two questions of their own before joining or signing in, making the link a starting point for their thinking too.
Product references: ChatGPT canvas, Claude artifacts, and Poe multi-bot conversations. Our comparisons explain the tradeoffs. How we compare.
Who uses Quartz
Stanford students use Quartz to explore their ideas. The workspace is built for people whose work benefits from a second look:
- Students developing an argument, an application, or an original idea
- Founders pressure-testing a pitch, a product decision, or a plan
- Researchers comparing explanations and deciding what to investigate next
- Investors examining a thesis, a company, or a change in a market
- Consultants and independent professionals refining a recommendation or client draft
The team behind Quartz
Mark Leschinsky
Founder
Mark is a Stanford student and the founder of Quartz. He is building a workspace for people who want to explore an idea, question the first answer, and make up their own minds.
Why Quartz exists
Founded in 2026, Quartz began as a document workspace and evolved into a panel for the questions behind the work. Its belief is simple: agreement can help you find common ground, and disagreement can reveal the question you should have asked.
Quartz is founder-led and operated by The Human Judgment Company dba Quartz. You can reach Mark directly with feedback about the product.
How Quartz works
1. Bring one real question
Try the public demo with something you want to understand. For your own workspace, join the waitlist or sign in if you already have access; eligible Stanford addresses receive immediate access.
2. Compare, then follow up
Read the three responses, check the sources, and pursue the line of thinking that helps. Answers appear as they are generated; the time needed depends on the question, the models, and any research involved.
3. Keep what earns its place
Star the answers you want to revisit, copy useful passages, or share the conversation. Getting started is self-serve, with no onboarding call required.
Need a hand? Email mark@tryquartz.ai. Support is direct by email, and response times vary.
Key facts
- Company name
- The Human Judgment Company dba Quartz
- Type
- AI research and reasoning software
- Founded
- 2026
- Founder
- Mark Leschinsky
- Headquarters
- United States. Company mailing address in San Francisco, California; no separate headquarters location is published.
- Mailing address
- 2261 Market Street, STE 63678, San Francisco, CA 94114, United States
- Website
- tryquartz.ai
- Core offering
- Up to three AI perspectives side by side, with web research, attachments, and follow-up conversations
- Contract terms
- Frontier is monthly. Cancel from Settings. Use of Quartz is governed by its Terms of Use.
- Services
- AI chat, web research, feedback on attached files, saved conversations, and shared chat links
- Communication
- mark@tryquartz.ai
- Notable clients
- No named customer organizations published
- Customers served
- Individual users, including Stanford students. Total customer count is not publicly reported.
- Projects delivered
- Quartz is self-serve software, not a project-delivery service
- Competitors
- ChatGPT, Claude, Gemini, and Poe
Frequently asked questions
What is Quartz?
Quartz is an AI workspace that helps students, founders, researchers, and investors compare perspectives on research, decisions, and writing. Its panel gives you up to three AI perspectives to examine before you decide what to use.
Who founded Quartz?
Mark Leschinsky founded Quartz in 2026. Quartz is operated by The Human Judgment Company.
How is Quartz different from ChatGPT, Claude, or Poe?
Quartz focuses on comparing up to three AI responses and following up on the same question. ChatGPT has canvas, Claude has artifacts, and Poe also supports multiple bots; choose around the workflow that fits your work.
Can I try Quartz before joining?
Yes. The public demo lets you ask a question before joining the waitlist for your own workspace. Access opens by invitation, with immediate access for eligible Stanford email addresses.
What does Quartz cost?
Quartz Core is free. Quartz Frontier has a list price of $30 per month and is currently 100% off each month; the pricing page explains the offer and cancellation.
Does agreement between the AIs mean an answer is right?
Agreement is a useful signal to examine, not proof. Models can share a mistake, so check important claims against the original sources and your own judgment.
Can I use Quartz on my phone?
Yes. Quartz works in desktop and mobile browsers. On a phone, scroll horizontally between the model responses.
How do I reach the team?
Email mark@tryquartz.ai for help or feedback. Quartz is self-serve, and support response times vary.
Try a question that matters to you, or explore plans and pricing.