Antigravity

Antigravity is Google’s agent-first AI developer environment – built on Gemini 3 Pro and designed for coding workflows that go beyond text suggestion into planning, file editing, command execution, and verification. It is currently in public preview at no cost, which makes it the lowest-friction way to evaluate frontier AI coding tooling in 2026 without a monthly commitment.

Best for: Teams and individuals evaluating agent-first development workflows, particularly for multi-step tasks – plan, code, validate – where an agent that executes autonomously adds more value than one that only suggests.

Core Features

• Gemini 3 Pro access – frontier multi-modal model, available at no cost during the public preview phase
• Multi-model environment – access to Gemini 3 Pro, Claude Sonnet 4.5, and GPT-OSS models within the same IDE surface
• Agent-first architecture – designed for autonomous task execution across planning, implementation, and verification stages
• Unlimited tab completions (preview) – no cap on AI-assisted code completion during the preview period
• Unlimited command requests (preview) – agent can run shell commands as part of autonomous multi-step workflows
• Rate limit refresh – limits refresh every 5 hours during the public preview phase

Pricing

Individual: $0/mo during public preview, subject to fuel-tank rate limits. Google AI Pro/Ultra plans: $100/mo with priority access and 5x capacity of Pro. API billing is pay-as-you-go via the Gemini/Interactions API. Post-preview GA pricing remains TBD. Verified from Google vendor resources on 2026-05-30.

Pros

• $0 cost during public preview – evaluate frontier agent capabilities without subscription risk
• Multi-model access (Gemini, Claude, GPT-OSS) gives flexibility without switching between tools
• Agent-first design is optimized for autonomous multi-step workflows, not just autocomplete

Cons

• Post-preview pricing unknown – cost structure after GA is unpublished; budget planning is speculative
• Rate limits not clearly documented – some users report hidden thresholds despite stated “unlimited” claims
• Newer product – feature stability and enterprise controls (SSO, audit logs, access management) are still maturing

Verdict

The $0 preview is the lowest-risk evaluation path in the AI coding agent category right now. Try Antigravity for complex, multi-step tasks – especially where you want an agent that can plan and validate rather than only autocomplete. Set expectations clearly: preview pricing and rate limits will change at general availability, and the tool is newer than Claude Code or Cursor. The right framing is “evaluate now, assess cost at GA” rather than “commit now.”

Compare: Best AI Coding Agents 2026 | Cursor

Source: Antigravity vendor page, verified 2026-05-30. Public-preview pricing is current; re-check before purchase because GA packaging remains open.

Related stack: AI Coding Agent Stack for Builders 2026