Google Antigravity vs Open Code: Coding Agents Comparison
Compare Google Antigravity and Open Code side by side. Both are tools in the Coding Agents category.
Updated April 29, 2026
The short answer
Choose Google Antigravity if free during preview phase with access to cutting-edge Gemini 3 models.
Choose Open Code if open-source under MIT — 147K+ GitHub stars, no vendor lock-in.
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Quick Comparison
| Category | Coding Agents | Coding Agents |
| Pricing | — | Free open-source (MIT) + optional paid Zen service |
| Best For | — | Terminal-first developers who want a privacy-respecting, provider-agnostic coding agent with multi-session support |
| Website | developers.googleblog.com | github.com |
| Key Features | — |
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| Use Cases | — |
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Pros & Cons: Google Antigravity vs Open Code
- +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
- −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
- +Open-source under MIT — 147K+ GitHub stars, no vendor lock-in
- +Privacy-first design with zero data retention
- +75+ providers including local, GitHub Copilot, and ChatGPT Plus/Pro accounts
- +Multi-session parallel agents (build + plan modes)
- +Free with optional Zen service for optimized models
- −Terminal-first — less polished than IDE-native agents like Cursor
- −Desktop app still in beta on macOS/Windows/Linux
- −Steeper learning curve than minimalist tools like Claude Code
- −Provider availability depends on third-party API access (e.g., Anthropic OAuth restrictions)
Pricing: Google Antigravity vs Open Code
- · Full access during preview
- · Gemini 3 models
- · Browser orchestration
- · Multi-agent workflows
- · Higher rate limits
- · Rate limits refresh every 5 hours
- · Claude Opus 4.6 access
- · Priority support
- · Highest rate limits
- · Reliable daily Claude Opus 4.6 access
- · Premium support
- · Production-grade limits
- · All core terminal, IDE, and desktop features
- · Bring your own API key for any of 75+ providers
- · Multi-session parallel agents
- · Privacy-first — zero data retention
- · Curated, optimized model tier
- · Managed inference for users who don't want to BYOK
- · Same privacy posture as core OSS
What people are saying
Curated quotes from Hacker News, Reddit, Product Hunt, and review blogs. Dates shown so you can judge whether early criticism still applies.
- +
“It was the first time I felt like I could write up a large prompt, walk away from my laptop, and come back to a lot of work having been done.”
— jeremy_k, Hacker News · Jul 2025 - +
“Model agnostic — I can use it with my existing Copilot subscription and select Claude Sonnet 4 freely.”
— graeber_28927, Hacker News · Jul 2025 - +
“The screen is much more 'managed', with windows, a status bar, more colors, etc.”
— gwd, Hacker News · Jul 2025 - −
“Why is the new version so laggy? A task took almost two hours that finished in under 10 minutes when reverting to v1.2.10.”
— GitHub user, GitHub Issue #21450 · Mar 2026 - −
“After Anthropic blocked OpenCode from Claude consumer OAuth tokens, OpenCode removed Claude Pro/Max support — broke workflows for Max subscribers.”
— Community reaction, Hacker News thread · Jan 2026
When to Choose Google Antigravity vs Open Code
- Terminal-first AI pair programming for keyboard-driven developers
- Privacy-sensitive or air-gapped engineering environments
- Parallel agent workflows (planner + builder) on the same codebase
How to Choose a Coding Agents Tool
Key criteria to evaluate when comparing Coding Agents solutions:
About Google Antigravity
Google Antigravity is Google's agentic development platform, announced alongside Gemini 3 in late 2025. Built as a modified VS Code fork, Antigravity 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 environments. The platform achieved 76.2% on the SWE-bench Verified benchmark, demonstrating strong code generation capabilities. Antigravity supports Gemini 3 Pro, Deep Think, and Flash models, plus third-party models including Claude, making it flexible for developers who want to use different AI providers. Currently available in preview for personal Gmail accounts on Mac, Windows, and Linux, Antigravity is free during the preview phase but expected to introduce paid tiers. Google AI Pro subscribers ($20/month) and AI Ultra subscribers ($250/month) receive higher rate limits, with rate limits refreshing every 5 hours for Pro users.
About Open Code
OpenCode is an open-source AI coding agent built by Anomaly that runs primarily in the terminal but is also available as an IDE extension and a beta desktop app on macOS, Windows, and Linux. Its standout feature is privacy-first design: OpenCode does not store any of your code, prompts, or context data, making it suitable for regulated environments and air-gapped workflows.
The agent supports 75+ LLM providers through the Models.dev catalog including Claude, OpenAI GPT, Google Gemini, GitHub Copilot, ChatGPT Plus/Pro accounts, and local models. It includes LSP integration for accurate code understanding, multi-session capability for running parallel agents on the same project, and shareable session links for debugging and team review.
OpenCode is fully free and open-source under MIT, with an optional paid "Zen" service for optimized models. Source is at github.com/anomalyco/opencode (147K+ stars, 6.5M monthly developers as of April 2026). It hit #1 on Hacker News on March 20, 2026, and crossed Cline + OpenHands in star velocity earlier in the year.
What is Coding Agents?
AI-powered developer tools that can write, review, debug, and refactor code—ranging from IDE copilots to fully autonomous software engineering agents.
Browse all Coding Agentstools →Frequently Asked Questions
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