# Google Antigravity vs Kiro

> Google Antigravity: Google's agent-first platform for building software with parallel AI coding agents
> Kiro: Spec-driven agentic IDE from AWS that turns prompts into designs, tasks and code

- Google Antigravity profile: https://finderatlas.com/tools/google-antigravity
- Kiro profile: https://finderatlas.com/tools/kiro
- Comparison page: https://finderatlas.com/compare/google-antigravity-vs-kiro
- Last reviewed: October 2026

## Verdict

Google Antigravity and Kiro are both Coding AI tools. Google Antigravity scores higher in FinderAtlas's editorial review (8.3 vs 8.0 out of 10), led by feature depth and value for money. Both have a free plan or trial. Only Google Antigravity is available on VS Code Extension and JetBrains Plugin and offers an API. Only Kiro is available on Web.

### Choose Google Antigravity if

- You want a tool built for parallel coding agents, legacy migrations, automated testing, incident triage, prototyping.
- Free Individual plan with unlimited Tab completions and Command requests.
- Offers Gemini, Claude and GPT-OSS models in one tool.

### Choose Kiro if

- You want a tool built for turning feature ideas into structured specs and tasks before agents write code in large codebases.
- Spec-driven workflow produces requirements, design and task lists before code is written.
- Based on Code OSS, so VS Code settings, themes and Open VSX extensions carry over.

## Pricing

| | Google Antigravity | Kiro |
| --- | --- | --- |
| Pricing model | Freemium | Freemium |
| Free plan or trial | Yes | Yes |
| Starting price | $0 | $0 |

## Features

| Feature | Google Antigravity | Kiro |
| --- | --- | --- |
| Antigravity App | Yes | Not listed |
| Antigravity CLI | Yes | Not listed |
| Antigravity IDE | Yes | Not listed |
| Background Subagents | Yes | Not listed |
| Verification Artifacts | Yes | Not listed |
| Multi-Model Support | Yes | Not listed |
| Extensibility | Yes | Not listed |
| Antigravity SDK | Yes | Not listed |
| Security Controls | Yes | Not listed |
| Spec-driven development | Not listed | Yes |
| Agent hooks | Not listed | Yes |
| Steering files | Not listed | Yes |
| Memory | Not listed | Yes |
| Correctness checking | Not listed | Yes |
| Model choice | Not listed | Yes |
| Kiro CLI | Not listed | Yes |
| Kiro Web | Not listed | Yes |
| Local command sandbox | Not listed | Yes |
| Open standards and MCP | Not listed | Yes |

## Platforms

| Platform | Google Antigravity | Kiro |
| --- | --- | --- |
| Web | No | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| iOS | No | No |
| Android | No | No |
| API | Yes | No |
| Browser Extension | No | No |
| Linux | Yes | Yes |
| CLI | Yes | Yes |
| VS Code Extension | Yes | No |
| JetBrains Plugin | Yes | No |

## Google Antigravity strengths

- Free Individual plan with unlimited Tab completions and Command requests.
- Offers Gemini, Claude and GPT-OSS models in one tool.
- Parallel agents and background subagents in isolated Git worktrees.
- Artifacts (plans, diffs, browser recordings) make agent output reviewable.
- Available as app, CLI, IDE extensions and Python SDK on macOS, Windows and Linux.
- Enterprise controls include SSO, VPC Service Controls and regional data residency.

## Google Antigravity limitations

- Pricing page gives no numeric rate limits or credit amounts, so quotas are hard to predict.
- Prices for Google AI Pro and Ultra are not shown on the Antigravity pricing page.
- Weekly and five-hour limits apply, with Gemini and Claude/GPT usage tracked separately.
- Product surfaces and release cadence are fast-moving, and some enterprise IDE features are still in Preview.

## Kiro strengths

- Spec-driven workflow produces requirements, design and task lists before code is written.
- Based on Code OSS, so VS Code settings, themes and Open VSX extensions carry over.
- Same credit pool works across IDE, CLI and Web with no separate cloud compute charge.
- Multiple model families, including open-weight options, with an Auto mode.
- Free tier with 50 credits and downloadable apps on macOS, Windows and Linux.

## Kiro limitations

- Credits can run out quickly on complex spec tasks; costs vary by model and monthly credits do not roll over.
- Free tier excludes premium models and is limited to open-weight models and Claude Sonnet 4.5 under rate limits.
- Mobile app is iOS-only, in preview, and needs iOS 26 or later.
- Cloud sessions are only available in US East (N. Virginia), and Enterprise pricing is not published.

## FAQ

**Is Google Antigravity better than Kiro?**

It depends on your workflow. Google Antigravity is built for parallel coding agents, legacy migrations, automated testing, incident triage, prototyping. Kiro is built for turning feature ideas into structured specs and tasks before agents write code in large codebases.

**What are the key feature differences between Google Antigravity and Kiro?**

Google Antigravity: Google's agent-first platform for building software with parallel AI coding agents. Kiro: Spec-driven agentic IDE from AWS that turns prompts into designs, tasks and code.

**Does Google Antigravity or Kiro have a free plan?**

Yes, both do. Google Antigravity is freemium and Kiro is freemium, and each has a free plan or trial.

**Which is cheaper, Google Antigravity or Kiro?**

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.