Buy software by the unit that tracks value, not by the login. Here is how I rank seat, credit, usage and outcome pricing, what 14 vendors charge in 2026, and what to write into the contract.
Identity vendors rarely die of bankruptcy. They die of acquisition, then neglect, then a shutdown email. A complete history of every dead CIAM vendor, the pattern behind the deaths, and the questions that protect you from the next one.
Whether Auth0 is too expensive depends entirely on who's asking. A framework for telling the regulated enterprise buyer (pay and negotiate) apart from the high-volume, cost-sensitive platform (migrate), with 2026 pricing and breach-cost data.
Okta and Microsoft no longer define the CIAM market alone. Five developer-first, passwordless-native, and AI-ready platforms are growing fast by solving the specific problems the incumbents leave unaddressed. Here is where each one fits in 2026.
Eighteen vendors all claim to track AI engine visibility in 2026. Their methodologies differ enough that cross-vendor numbers don't compare. Here is how to actually evaluate them.
Most CIAM selection decisions get made on features at evaluation time. Six-figure migration projects 18 months later are the result. Here's the stage-fit framework that prevents it.
G2, TrustRadius, and Gartner Peer Insights are commercially captured. Buyers know it. Nobody published a replacement. Here is the 7-step framework I use.
Firebase Auth has no real B2B Organizations and prices enterprise SAML free only to 50 MAU. Eight alternatives compared on verified September 2026 pricing.
Cognito's free tier shrank and its hosted UI still fights you. Eight alternatives compared on verified September 2026 pricing, plus the SRP migration trap.
Fourteen Auth0 alternatives compared on verified September 2026 pricing: Clerk, WorkOS, SSOJet, Stytch, Descope, Keycloak, FusionAuth, Cognito and more.
Ten passwordless CIAM platforms compared on verified September 2026 pricing and real passkey depth, plus three vendors to drop from an older shortlist.