{"slug":"supabase-auth","name":"Supabase Auth","domain":"supabase.com","verdict":"As of 2026-07-15, ChatGPT, Claude, Gemini, Grok collectively rank Supabase Auth #3 of 10 for authentication provider for web apps (one of 3 leaderboards it appears on). Source: https://modelsagree.com/product/supabase-auth (modelsagree.com, CC BY 4.0).","best_rank":3,"categories":3,"brief":{"category":"best-auth-provider","title":"Best authentication provider for web apps","rank":3,"of":10,"top":"Clerk","day":"2026-07-17","why":[{"t":"open-source and self-hostable","m":["Gemini","Grok","ChatGPT"],"q":"open-source, and self-hostable identity provider"},{"t":"tight Postgres and RLS integration","m":["Gemini","Grok","ChatGPT"],"q":"tight Postgres/RLS integration for authorization"},{"t":"generous free tier","m":["Gemini","Grok"],"q":"generous free tier of 50,000 monthly active users"},{"t":"passwordless and social support","m":["Grok","ChatGPT"],"q":"straightforward passwordless and social authentication"}],"gap":[{"t":"pre-built polished UI components","m":["Claude","Gemini","Grok","ChatGPT"],"q":"pre-built, highly polished UI components"},{"t":"built-in B2B organizations","m":["Claude","Grok","ChatGPT"],"q":"built-in B2B organizations/multi-tenancy"},{"t":"reliable session management","m":["Claude","Grok"],"q":"reliable session management"}],"fix":[{"t":"less complete enterprise capabilities","m":["ChatGPT","Grok"],"q":"enterprise SSO, authorization, and polished account-management capabilities remain less complete"},{"t":"coupled to Supabase and PostgreSQL","m":["Gemini"],"q":"Heavily coupled to the Supabase and PostgreSQL ecosystem"},{"t":"less polished frontend components","m":["Grok"],"q":"Less polished frontend components than dedicated UI-focused options"}]},"entries":[{"slug":"best-auth-provider","title":"Best authentication provider for web apps","rank":3,"of":10,"score":9,"appearances":3,"modelRanks":{"ChatGPT":5,"Gemini":2,"Grok":2},"reason":"Exceptional, open-source, and self-hostable identity provider that integrates natively with PostgreSQL row-level security, providing a generous free tier of 50,000 monthly active users.","reasons":[{"model":"Gemini","reason":"Exceptional, open-source, and self-hostable identity provider that integrates natively with PostgreSQL row-level security, providing a generous free tier of 50,000 monthly active users."},{"model":"Grok","reason":"Outstanding value with generous free tier, tight Postgres/RLS integration for authorization, open-source self-hostable option, solid passwordless/MFA/social support, and low operational overhead; proven for rapid SaaS iteration and cost predictability for typical practitioners already in or open to Postgres ecosystem."},{"model":"ChatGPT","reason":"Excellent value when paired with Supabase: open-source GoTrue, straightforward passwordless and social authentication, JWT integration, Row Level Security, and a credible self-hosting path"}],"fixes":[{"model":"ChatGPT","fix":"Its native B2B organization, enterprise SSO, authorization, and polished account-management capabilities remain less complete than the leaders"},{"model":"Gemini","fix":"Heavily coupled to the Supabase and PostgreSQL ecosystem, introducing significant integration overhead if used as a standalone provider with other databases."},{"model":"Grok","fix":"Less polished frontend components than dedicated UI-focused options; some session stability reports and less enterprise federation depth out-of-the-box."}],"updated":"2026-07-15","rank_history":{"days":["2026-06-29","2026-07-08","2026-07-09","2026-07-10","2026-07-14","2026-07-15"],"ranks":[4,4,4,7,3,3]},"reasoning_shift":[{"model":"Gemini","from":"2026-07-14","to":"2026-07-15","added":[{"t":"self-hostable identity provider","q":"self-hostable identity provider"},{"t":"50,000 monthly active users","q":"50,000 monthly active users"},{"t":"significant integration overhead","q":"introducing significant integration overhead"}],"dropped":[{"t":"without custom API authorization logic","q":"without custom API authorization logic"},{"t":"predictable scaling","q":"predictable scaling"}]},{"model":"ChatGPT","from":"2026-07-14","to":"2026-07-15","added":[{"t":"open-source GoTrue","q":"open-source GoTrue"},{"t":"JWT integration","q":"JWT integration"},{"t":"credible self-hosting path","q":"a credible self-hosting path"}],"dropped":[{"t":"SaaS tenancy logic remains yours","q":"substantial SaaS tenancy logic remains yours"}]}],"api":"https://modelsagree.com/api/v1/best/best-auth-provider.json"},{"slug":"best-authentication-library-for-nextjs-applications","title":"Best authentication library for Next.js applications","rank":4,"of":6,"score":7,"appearances":4,"modelRanks":{"ChatGPT":4,"Claude":5,"Gemini":4,"Grok":4},"reason":"Excellent value when the application already uses Supabase, combining Next.js SSR support, numerous login methods, Postgres-backed users, and unusually powerful authorization through Row Level Security","reasons":[{"model":"ChatGPT","reason":"Excellent value when the application already uses Supabase, combining Next.js SSR support, numerous login methods, Postgres-backed users, and unusually powerful authorization through Row Level Security"},{"model":"Gemini","reason":"Natively integrates PostgreSQL Row Level Security (RLS), database triggers, and @supabase/ssr helpers to provide robust authentication with zero extra architectural overhead for full-stack Next.js apps. Assumes application uses Supabase or PostgreSQL."},{"model":"Grok","reason":"Seamless integration and zero-config for Supabase users with RLS for authz; generous free tier, good security, and solid Next.js compatibility; high value for ecosystem-locked teams where it reduces overall complexity."},{"model":"Claude","reason":"If you're already on Supabase it's effectively free, tightly integrated with Postgres row-level security so authorization lives next to your data, and covers OAuth, magic links, phone auth, and anonymous sign-ins with generous limits"}],"fixes":[{"model":"ChatGPT","fix":"Outside the Supabase data stack, its main advantage disappears and cookie, SSR, and RLS configuration can be more intricate than a dedicated Next.js auth product"},{"model":"Claude","fix":"Only makes sense inside the Supabase ecosystem — adopting it standalone couples your auth to their platform for little benefit, and RLS-centric authorization has a real learning curve that bites teams who skip it"},{"model":"Gemini","fix":"Tightly bound to the Supabase data ecosystem, making it unviable for applications using alternative databases or ORMs."},{"model":"Grok","fix":"Tied to Supabase stack (not ideal for independent DB choices or non-Supabase projects)."}],"updated":"2026-07-20","rank_history":{"days":["2026-07-19","2026-07-20"],"ranks":[5,4]},"api":"https://modelsagree.com/api/v1/best/best-authentication-library-for-nextjs-applications.json"},{"slug":"best-passkey-authentication-api-for-consumer-apps","title":"Best passkey authentication API for consumer apps","rank":8,"of":8,"score":1,"appearances":1,"modelRanks":{"Grok":5},"reason":"Tight full-stack integration (esp. with Postgres/RLS), cost-effective at scale, growing native/beta passkey support + easy partner integrations (e.g., Clerk/Corbado); great value for consumer apps in the Supabase ecosystem with solid passwordless foundations.","reasons":[{"model":"Grok","reason":"Tight full-stack integration (esp. with Postgres/RLS), cost-effective at scale, growing native/beta passkey support + easy partner integrations (e.g., Clerk/Corbado); great value for consumer apps in the Supabase ecosystem with solid passwordless foundations."}],"fixes":[{"model":"Grok","fix":"Passkey support was still maturing/beta in mid-2026; less polished standalone UI components than Clerk."}],"updated":"2026-07-16","api":"https://modelsagree.com/api/v1/best/best-passkey-authentication-api-for-consumer-apps.json"}],"page":"https://modelsagree.com/product/supabase-auth","check":"https://modelsagree.com/check?q=Supabase%20Auth","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}