Cortex AI IDE vs Replit
Cortex AI IDE
cortex-ide.app
Replit
replit.comSide by side
| Figure | Cortex AI IDE | Replit |
|---|---|---|
| Price from | $3.33/mo | $18/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 4 | 6 |
| Spec score · AI Code Editors | 9.1 (#3) | 8.9 (#6) |
| Spec score · Agentic Ides | 9.1 (#3) | 8.8 (#5) |
| Audience | The site describes it as intended for developers and small teams building SaaS, e-commerce, fintech, internal tools, and open source projects. | Replit says its mission is to make software creation accessible to everyone, not just programmers. |
| Security | API keys are stored in the operating system credential store, and BYOK requests go directly from the computer to the selected provider over TLS. | Replit says it is SOC 2 Type II audited annually by an independent CPA firm and has an Advanced Bitsight rating. |
| Support | Community support is included on the free tier; the yearly Pro plan advertises priority support with a 24-hour target. | Support resources include documentation, a community forum, a support ticket form for account or billing issues, and a system status page. |
| What it does | Cortex is an agentic coding workspace that plans changes, edits multiple files, runs terminal commands, verifies results, and presents reviewable diffs. | Replit is an agentic software creation platform that enables anyone to build applications using natural language. |
Plans
Cortex AI IDE
- Free (BYOK)Free
- Free (BYOK)Free
- Pro Monthly$5 a month
- Pro Yearly$40 a year
Replit
- StarterFree
- Replit Core$18 a month
- Replit Core$18 a month
- Replit Pro$90 a month
- Replit Pro$90 a month
- EnterprisePriced on request
In their own words
Cortex AI IDE
Cortex AI IDE is an agentic coding workspace for planning changes, editing files across a project, running terminal commands, and checking results through reviewable diffs. Its workflow includes Git, grep, glob, semantic search, web search, LSP tools, and task tracking, with more than 250 skills for debugging, refactoring, documentation, SEO, and design reviews. Eight built-in AI provider integrations are listed, and Cortex Connect supports OpenAI-compatible endpoints such as Ollama, vLLM, Groq, and NVIDIA NIM. MCP servers can add external tools and services. Project memory and chat history are stored locally in each project. The free BYOK plan costs nothing; Pro Monthly costs $10 a month and Pro Yearly $80 a year. AI features require internet access and a supported API key. Native Windows and Linux builds are offered; macOS uses a source-build guide.
Replit
Replit is a software creation platform where users can describe applications in natural language and refine them with an AI agent. The agent works through chat, tests and revises code, and can use a browser to produce reports and address issues. Its cloud development environment supports coding and collaboration in a browser, with automatic package installation and built-in authentication, database, hosting, and monitoring. Replit supports websites, mobile projects, designs, slides, animations, data visualizations, 3D, games, documents, and spreadsheets, with more than 100 integrations. The free Starter plan includes daily usage, but limits publishing to one live project and running one background task at a time. Replit Core costs $18 per month billed annually, and Pro costs $90 per month billed annually. Pro supports up to 15 collaborators and 50 viewers, and includes database rollback for up to 28 days. Replit is available on Android, iOS, Linux, macOS, Windows, and web. Its mobile apps support building, sharing, and publishing web apps; native iOS development uses the web version with Expo Go previews.