Google Antigravity vs Kilo Code
Updated April 29, 2026
Overview
Google Antigravity is Google's agentic development platform, announced alongside Gemini 3 in late 2025. Built as a modified VS Code fork, it combines a traditional AI-powered editor with a Manager View for orchestrating multiple autonomous agents working in parallel across workspaces. Agents can plan, execute, and verify complex tasks across editor, terminal, and browser. Antigravity achieved 76.2% on SWE-bench Verified and supports Gemini 3 Pro, Deep Think, and Flash models, plus third-party models like Claude.
Kilo Code is an open-source AI coding agent for VS Code, JetBrains, and the CLI, forked from Cline and Roo Code. It connects to 500+ models across 60+ providers with zero markup, and ships an Orchestrator mode that routes complex tasks to specialist sub-agents (Architect, Coder, Debugger). 1.5M+ users; raised $8M seed in December 2025.
Key features
Core capabilities each platform advertises.
- Orchestrator mode routes complex tasks to specialist sub-agents (Architect / Coder / Debugger)
- 500+ models across 60+ providers (Anthropic, OpenAI, Google, Mistral, Ollama, OpenRouter)
- Runs in VS Code, JetBrains, and as a standalone CLI
- Inline autocomplete, browser automation, and automated refactoring
- Open-source (forked from Cline + Roo Code) with 1.5M+ active users
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Free during preview phase with access to cutting-edge Gemini 3 models
- Impressive 76.2% score on SWE-bench Verified demonstrates strong capabilities
- Multi-agent orchestration enables complex parallel workflows across editor, terminal, and browser
- Support for third-party models like Claude provides flexibility beyond Google's ecosystem
Cons
- Preview status means features and pricing are subject to change
- Rate limits on free tier can be restrictive for heavy users
- AI Ultra pricing at $250/month is steep for individual developers
- Limited to personal Gmail accounts currently, no enterprise offerings yet
Pros
- Most-used open-source coding agent (1.5M+ users, #1 on OpenRouter)
- Zero markup — pays Anthropic/OpenAI/Google list price
- Orchestrator routes complex work to specialist sub-agents
- 500+ models across 60+ providers, including local
- BYOK credits never expire
Cons
- Newer than incumbents like GitHub Copilot — fewer enterprise references
- Quality is bounded by your chosen model and prompt
- Community support rather than dedicated enterprise SLAs
- Orchestrator workflows have a learning curve to configure
What people are saying
Brilliant coding assistant — works great for both VS Code and JetBrains IDEs with access to many providers.
Read full reviewGoogle Antigravity or Kilo Code — which should you choose?
Choose Google Antigravity if you wantChoose if you want
Choose Kilo Code if you wantChoose if you want
- Orchestrated multi-step refactors across an existing codebase
- Cost-conscious AI coding via BYOK with zero provider markup
- Multi-IDE team standardization across VS Code and JetBrains
- Local-first private coding workflows with Ollama
- Architectural planning and automated debugging from a single agent
Compare Google Antigravity and Kilo Code on your own traffic
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 500+ models through one gateway.