Stytch vs Sixth

Stytch gives developers one API for login, authorization, and fraud checks in B2B and consumer apps. You add passkeys, SSO, SCIM, MFA, and machine-to-machine tokens without stitching Auth0-style add-ons to a separate risk vendor.

Where many auth platforms gate enterprise features behind sales calls, Stytch includes SSO, RBAC, and multi-tenancy in its pay-as-you-go tier with 10,000 monthly active users included. It also ships an embeddable admin portal so customers configure SAML and SCIM themselves.

Backend engineers, platform teams, and AI product builders use Stytch after Twilio acquired it to cover human users and agent identities in the same stack.

Sixth is a developer-focused coding agent that plans, writes, and debugs software inside your editor and through chat. It ships as a web app and a Visual Studio Code extension, and it routes work across frontier models from Anthropic, Google, and OpenAI instead of locking you to one provider.

Where many assistants jump straight to autocomplete, Sixth emphasizes orchestration. Deep Planning Mode drafts a step-by-step strategy before code changes, sub-agents run research and validation in parallel, and Telegram remote control lets you approve tasks from a phone. Paid tiers add MCP server access, with Pro+ listing more than 1,000 integrations.

Individual developers can start on the free tier with monthly agent and completion limits. Pro, Pro+, Ultra, and Teams plans raise usage caps, model access, and support levels, while the Enterprise page adds SOC 2 Type II compliance, SSO, and optional private deployment for regulated teams.