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Best AI coding assistant for JavaScript · by published data
We list 5 tools here. We verified pricing for 4; 3 of those have a free plan, and the lowest published paid entry price is Amazon Q Developer at $19/month. Data checked Oct 26, 2026 on each vendor's own site.
How this list is built: Tools whose own pages list JavaScript alongside other supported languages. The evidence column quotes the vendor page we matched. A mention is not a test or an endorsement. Listed A–Z by name. Membership comes from our category, verified pricing or a phrase on the vendor's own page. No vendor pays for placement.
| Tool | Type | Free plan | Paid from | Evidence (vendor page) | Actions |
|---|---|---|---|---|---|
| Amazon Q Developer | IDE assistants | Yes | $19/mo | JavaScript: “….NET on AWS Python on AWS Java on AWS PHP on AWS JavaScript on AWS Help Contact Us File a Support Ticket AWS re:…” source | View listing Visit site |
| Greptile | AI code review tools | Yes | Free | JavaScript: “…es does Greptile support? Greptile fully supports Python, JavaScript, TypeScript, Go, Elixir, Java, C, C++, C#, Swift, PHP, and…” source | View listing Visit site |
| Kiro | AI IDEs | Yes | $20/mo | JavaScript: “…rk. This list includes, but is not limited to Python, Java, JavaScript, TypeScript, C#, Go, Rust, PHP, Ruby, Kotlin, C, C++, shell…” source | View listing Visit site |
| Qodo | AI code review tools | No | $30/mo | JavaScript: “…al Studio. Languages All major languages — Python, Java, JavaScript, TypeScript, Go, C#, .NET, Swift, Kotlin, Ruby, PHP, C++. F…” source | View listing Visit site |
| Refact.aiService changed | IDE agent extensions | Not verified yet | Not verified yet | JavaScript: “…nerator Supports 25+ programming languages Java Python JavaScript Rust PHP C++ TypeScript HTML React Ruby SQL C YAM…” source | View listing Visit site |
FAQ
Which AI coding assistant for JavaScript have a free plan?
Of the 4 AI coding assistant for JavaScript whose pricing we have verified, 3 have a free plan: Amazon Q Developer, Greptile, Kiro. We have not verified the other 1 yet.
What is the cheapest paid plan among these AI coding assistant for JavaScript?
Among verified tools, the lowest published paid price is Amazon Q Developer at $19/month, then Kiro at $20/month. Prices are from each vendor's own pricing page.
How are these 5 AI coding assistant for JavaScript ordered?
Alphabetically by name (A–Z). Membership comes from our category, verified pricing or a phrase on the vendor's own page. No vendor pays for placement or for a better position.