Auto when you don't pick a model. The default model is now auto: the gateway classifies each request and picks the fitting model. Builder turns with tools go to Opus, design/refactoring/long-context work to Fable 5.1 (Pro/Team), short questions to Haiku. With your own keys, auto resolves to the strongest model of the key you have.
Eight Open Tools. Rules moved into Settings (global / system / AGENT.md / project layers); DiffView became DocView's "Compare" mode (against git HEAD or the saved file).
MCP catalog. Twenty-two official hosted MCP servers (Cloudflare, Vercel, Supabase, GitHub, Linear, Sentry, Context7, Hugging Face, Figma, Notion, Atlassian, Asana, Intercom, Zapier, Stripe, PayPal …) connect with one click; OAuth happens in the browser.
Monthly or yearly billing. The account card in Settings offers monthly or yearly (two months free) payment.
Terms and privacy consent line on the sign-in form.