$0 · accountVercel account; free models plus $5/month gateway credit per team; a payment method may be required before use ("customer_verification_required")
$0 · no account":free" models answered in the Kilo CLI without signing in (our test, Oct 6); other models need a Kilo account; non-":free" models answer 401 without sign-in (PAID_MODEL_AUTH_REQUIRED, seen 2026-10-16)