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Kiro vs Google Antigravity: catalog facts
Kiro	Google Antigravity
Freemium Free to start, with paid plans that include usage credits.	Freemium Has a pricing page with paid and enterprise plans; check it for current limits.
Command line	Command line
Spec-driven workflow from requirements to tasks Property-based tests to check correctness	Runs multiple agents in parallel across workspaces Scheduled messages for routine tasks
Relies on cloud AI models and an account Heavier use requires a paid plan	Closed source and tied to Google's AI services Agent workflows depend on a network connection
Downloadable app	Downloadable app
Closed source	Closed source
License: Proprietary	License not stated
Account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.