Which service handles your sign-up, login and sessions
Summary
As of Aug 18, 2026, the market’s strongest steer is Auth0 — followed by Stytch and Okta.
The engines name 16 of the 31 products measured here — the other 15 are never mentioned in an answer.
Buyers search for Okta by name more than anything else here — which is not where the engines steer.
“Convert,protect,&personalizeeveryjourney” — their words · Aug 14, 2026
The rest of the board, ranked by what the market says — every score’s receipts one click away.
Why it ranks here →
- AI answersnamed by Claude, Google's AI Mode and Google's AI Overview
- Search resultsranks #5 where buyers search
- Buyer demand2,400 searches a month by name
Why it ranks here →
- AI answersnamed by Claude, Gemini, Google's AI Mode and Google's AI Overview
- Search resultsnot in the top results where buyers search
- Buyer demand1,056,000 searches a month by name
Why it ranks here →
- AI answersnamed by Claude, Gemini, Google's AI Mode and Google's AI Overview
- Search resultsnot in the top results where buyers search
- Buyer demand257,990 searches a month by name
Why it ranks here →
- AI answersnamed by Google's AI Mode and Google's AI Overview
- Search resultsranks #8 where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnamed by Claude, Google's AI Mode and Google's AI Overview
- Search resultsnot in the top results where buyers search
- Buyer demand18,700 searches a month by name
Why it ranks here →
- AI answersnamed by Claude, Gemini, Google's AI Mode and Google's AI Overview
- Search resultsnot in the top results where buyers search
- Buyer demand15,730 searches a month by name
Why it ranks here →
- AI answersnamed by Claude and Gemini
- Search resultsnot in the top results where buyers search
- Buyer demand48,020 searches a month by name
Why it ranks here →
- AI answersnamed by Gemini, Google's AI Mode and Google's AI Overview
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnamed by Google's AI Mode
- Search resultsnot in the top results where buyers search
- Buyer demand1,300 searches a month by name
Why it ranks here →
- AI answersnamed by Google's AI Mode and Google's AI Overview
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnamed by Google's AI Mode
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnamed by Google's AI Overview
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnamed by Google's AI Mode
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnamed by Claude
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnamed by Google's AI Mode
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand4,400 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand4,190 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand3,600 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand480 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand110 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
Why it ranks here →
- AI answersnot named in AI answers
- Search resultsnot in the top results where buyers search
- Buyer demand0 searches a month by name
What the engines say
Verbatim, from the answers themselves. We quote what an engine said and when it said it — never a paraphrase, and never our summary of it.
“The "best" authentication platform depends on your specific needs, but here are the top options widely used for SaaS applications: Popular Authentication Platforms: Auth0 - Offers comprehensive identity management with support for multiple protocols (OAuth…”
Claude on Auth0 · Aug 18, 2026
“Clerk reimagines authentication with beautiful, customizable components that developers enjoy implementing, with a February 2026 pricing restructure making it more accessible.”
Claude on Clerk · Aug 18, 2026
“Developer-First & Modern UI - Clerk : Highly popular for web apps and SaaS startups due to drop-in React components, easy user profile management, and generous free tiers. - Descope : Known for drag-and-drop visual workflows and low-code/no-code journey…”
Google's AI Overview on Descope · Aug 18, 2026
“It's a good fit for developers already using Supabase and seeking integrated authentication. * FusionAuth is a developer-focused identity platform known for its flexible deployment options and extensive customization capabilities, making it suitable for teams…”
Gemini on FusionAuth · Aug 18, 2026
“Keycloak - Open-source option that gives you full control.”
Claude on Keycloak · Aug 18, 2026
“The "best" authentication platform depends on your specific needs, but here are the top options widely used for SaaS applications: Popular Authentication Platforms: Auth0 - Offers comprehensive identity management with support for multiple protocols (OAuth…”
Claude on OAuth · Aug 18, 2026
Engines asked for this category: Claude, Gemini, Google's AI Mode and Google's AI Overview.
Check it yourself
Ask ChatGPT about this market →
You will not get our answer back, and you should not expect to. A single reply varies by the day, the account and the wording; the board is what several engines named across a fixed set of buying questions, recorded over time. What you can check is the part that matters — whether the products we say the engines name are the ones you are shown.
What decides a position
Four signals, chosen because a vendor cannot buy any of them directly. Each is a measurement of what the market does, not of what a company says.
What AI engines answer when buyers ask what to use for a job.
Where the product stands in the search results buyers actually see for the category’s buying queries — including who owns the answer box.
How many buyers search for the product by name.
Whether the product is gaining or losing ground against the others in its market, measured between dated captures rather than claimed.
A product is scored on the signals we could actually measure for it, and a signal we could not measure is left out rather than counted as zero. This is not a quality rating and not a recommendation. It measures how present and how well-regarded a product is across public surfaces — a different question from whether it is right for you.
Cite this
Free to quote, with attribution. Add your own accessed date if your style needs one — the date below is when we measured, which is the one that decides whether a number is still current.
The Lytms Index. "Which service handles your sign-up, login and sessions." Lytms AI. Measured Aug 18, 2026. https://lytms.ai/best/auth-platforms
Prefer the numbers? Download the authentication platforms board as CSV — every row and every evidence line exactly as shown above, nothing extra.
Markets next to this one
Related because the rosters overlap, which is a fact about the products we track rather than a judgment about the markets. Each row says how much.
4 of these 31 products also appear on that roster — Beyond Identity, FusionAuth and Okta among them.
In collection — it publishes when the signals behind it are sufficient.