Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 OpenAI Codex | 71 PLN/mo | no | Coding |
 Cursor | 20 USD/mo | yes | Coding |
 Google Antigravity | 30 USD/mo | yes | Coding |
 Kilo Code | 15 USD/mo | yes | Coding |
 Kiro | 20 USD/mo | yes | Coding |
 Devin Desktop | 20 USD/mo | yes | Coding |
Each alternative in short
1. Cursor
AI coding agent and IDE that turns ideas into code, running tasks in parallel for developers and engineering teams.
Yes, there is a free plan. Hobby plan: limited Agent requests and access to Composer, no credit card required.
2. Google Antigravity
Agentic development platform from Google for building software with AI agents, from a desktop IDE to a terminal CLI and SDK.
Yes, there is a free plan. Free plan without subscription: access to a variety of agent models, unlimited Tab completions, unlimited Command requests, basic weekly rate limits.
3. Kilo Code
Open source AI coding agent for developers, running in VS Code, JetBrains, the terminal and the cloud, with 500+ models at provider cost.
Yes, there is a free plan. Free plan for individuals with the open source VS Code, JetBrains and CLI extensions, and Auto Free routing to free models through Kilo Gateway where available. Enterprise-level Teams plans include a 14-day trial.
4. Kiro
AI coding agent from AWS that turns prompts into specs, tests code correctness, and runs parallel agents for developers and teams.
Yes, there is a free plan. Kiro Free: 50 credits, access to open weight models and Claude Sonnet 4.5, subject to rate limits.
5. Devin Desktop
Desktop app to plan, run and review local and cloud coding agents from one editor-like workspace.
Yes, there is a free plan. Light quota to code with agents, limited model availability, unlimited inline edits and unlimited Tab completions.
FAQ
What is the best alternative to OpenAI Codex?
The most popular option in the same category is Cursor. See the comparison table above.