How is Vantage different from ChatGPT or Claude?

ChatGPT and Claude write you a document. Vantage keeps the document, prototype, tickets and roadmap connected to the feedback and decisions behind them, and tells you when one of them changes. You can also bring your Vantage context into Claude or ChatGPT, so you don’t have to choose.

Do I have to move off Notion or Linear?

No. Keep the tools you use and connect them to Vantage. Tickets push to Linear with two-way sync, and you approve every change that comes back.

What can I do in the first ten minutes?

Paste customer feedback or describe a problem, and get a PRD with every requirement linked to its source. You can try the demo on this page without signing up. Connect your tools whenever you’re ready.

I own several projects. What does Vantage do across them?

It briefs you every morning on what needs your call, catches specs that contradict each other, and flags anything that went stale after a decision changed. It works for a single project and earns its keep at two or more.

What if the AI gets something wrong?

Nothing updates silently. Every requirement cites the quote, call or metric behind it, and every change arrives as a diff you accept or reject before it touches your docs, tickets or Linear.

Can I use Vantage from Claude or ChatGPT?

Yes. Connect Vantage’s MCP server to Claude, add the GPT Action in ChatGPT, or use an API key. Then ask about your projects, search your specs, or create tickets from wherever you work.

Start on your own for free. When teammates join, they work from the same context, with admin, editor and viewer roles and private drafts that stay invite-only until you publish.

What does fair use mean on the unlimited features?

Unlimited features are meant for real day-to-day work by one person: up to 50 questions a day on Pro and Business, and on Business up to 10 PRDs, journeys or ticket batches a day. Very few people get close. If your team regularly needs more, talk to us.

Your data is encrypted in transit, and we never train on it. The AI providers we use are contractually barred from training on it too. You can disconnect any integration or delete your account at any time. We’re pursuing SOC 2 Type II.

How much does it cost?

Vantage is free to start with 300 credits and no credit card. Projects are unlimited on every plan, and AI work like generating a PRD or a ticket batch uses credits. Pro is $19 per seat a month billed annually ($25 monthly) with 1,500 credits a month, unlimited questions and prototypes. Business adds a shared team workspace and 4,000 credits per seat a month.

Can Amplitude merge arbitrary user IDs?

Do not assume so. Its identity model distinguishes user, device and Amplitude identifiers; follow current documentation.

Why can unique counts change later?

Identity association and merged profiles can affect analytical counts over time.

What is the minimum test set?

Anonymous-to-sign-in, the same person on another device and a different person after account switching.

Product workflows2026-10-272 min read

Validate Amplitude User Identity

Trace controlled journeys across anonymous and signed-in states and verify the intended profile association. A stable identity contract is essential before interpreting unique-user counts or comparing cohorts.

Before you start: Have SDK or integration access, a synthetic user and known device contexts. Follow the relevant SDK’s identity guidance for sign-in and sign-out.

Worked example: One person visits anonymously, signs in and later returns on another device. The analysis should reflect the intended user association without merging a different person who shares the first device.

Step-by-step guide

Document the identifier contract

Choose a stable user identifier and explain when it is set. Avoid changing the identifier scheme because an email or display name changed.

Test anonymous entry

Perform a known action before authentication and record the device context. Confirm where those events appear.

Test authentication

Test another device

Repeat with the same synthetic user on a second device. Check that the intended person is recognized rather than counted as an unrelated user.

Test account switching

Follow documented logout/reset behavior and use a different synthetic account. Confirm that shared-device history does not attribute new actions to the wrong person.

Review downstream effects

Check the relevant unique-user and cohort reports. Record the verified behavior and any historical identity limitations.

Common mistakes

Changing user IDs casually

A new identifier can represent a separate user rather than an update.

One device equals one person

Shared devices and multiple devices complicate that assumption.

Only signed-in tests

Anonymous and account-switching paths often reveal identity problems.

Tips

Use synthetic accounts for identity testing.

Record SDK and integration versions with the check.

Review identity before interpreting sudden user-count changes.

Sources and verification

Based on product documentation checked on 2026-10-24. This is a documentation-based guide, not a hands-on benchmark. Features and availability can change.