Side by side
Arch AI vs hi ai
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
The first AI email copilot to boost productivity.
Send emails instantly using AI.
Primary task
Email
Email
Pricing
Free
Paid · from $20/mo
Pricing details
Free
from $20/mo
Billing cycle
Not documented
Monthly
API access
Not documented
Not documented
Platforms
Web
Web, Chrome Extension
Integrations
Not documented
Google Sheets, Excel
Source rating
2.0 / 5 · 1 ratings
4.7 / 5 · 3 ratings
Catalog views
1.1k
24k
Estimated monthly traffic
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Catalog imported
30 Aug 2026
30 Aug 2026
Listed strengths
No pros listed yet
- Learns user's writing style
- Integration with Google Sheets
- Generates customer service replies
- Significant reduction in response times
- Offers smart inbox
Listed limitations
No limitations recorded; this does not mean none exist.
- No offline functionality
- Limited software integration
- Zero permanent email storage
- Requires full-time internet connection
- Limited language support