Tools · Comparison

Builder.io vs Mails.ai vs Refact AI

All three are code assistant tools. Here is what separates them.

	Builder.io	Mails.ai	Refact AI
What it is	One codebase for engineers, designers, PMs, and marketers. Everyone works from one source of truth, on brand and in code, with no handoffs to clean up.	Self-serve AI email API + MCP for agents. Per-agent addresses, per-agent reputation, native prompt-injection scanning on every inbound.	AI Agent for Coding - Refact.ai adapts to your workflow, automating coding, debugging, and testing with full context awareness. An open-source alternative to…
Category	Code Assistant	Code Assistant	Code Assistant
Pricing	Freemium · $24 - $40/mo	Freemium · $15 - $149/mo	Paid · $10/mo
How it bills	Flat monthly	Flat monthly	Flat monthly
Free tier	Yes	Yes	No
Rating	Not yet rated	Not yet rated	Not yet rated
Features	—	—	—
What works	Has a free tier, so it can be tried before paying Publishes its price openly — $24 - $40/mo Sits in Code Assistant, one of the better-covered categories here — easy to compare	Has a free tier, so it can be tried before paying Publishes its price openly — $15 - $149/mo Sits in Code Assistant, one of the better-covered categories here — easy to compare	Has a free tier, so it can be tried before paying Publishes its price openly — $10/mo Sits in Code Assistant, one of the better-covered categories here — easy to compare
What does not	97 other tools in this catalogue claim to do the same job	97 other tools in this catalogue claim to do the same job	97 other tools in this catalogue claim to do the same job