Instantly.ai vs Reply.io
No clear leader: Reply.io (59.6) and Instantly.ai (55.9) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for ai sdr sales agents. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Instantly.ai
A sales engagement and lead intelligence platform that automates email sequencing, prospect research, and inbox management using AI agents to help teams scale B2B outreach with optimized deliverability.
Reply.io
Sales engagement platform that automates multichannel outreach campaigns with AI, integrating email, LinkedIn, calls, SMS, and WhatsApp. Includes real-time B2B lead database, email warmup for deliverability, CRM synchronization, and an autonomous AI agent for managing replies and booking meetings.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Instantly.ai
From $94/month. Annual billing available with 10% discount.
- Starter$94/month (or $85/month billed annually)
- Database of 450M+ B2B Leads
- AI Sales Agent
- Outreach capabilities
- Scale$194/month (or $175/month billed annually)
- Everything in Starter
- AI Reply Agent
- Unibox replies
- Advanced deliverability features
- Premium Live Support
- Agency$555/month (or $500/month billed annually)
- Everything in Scale
- SISR System (Server & IP Sharding and Rotation)
- EnterpriseContact sales
- Everything in Agency
- Private Deliverability Network
- Dedicated Account Manager
- Shared Slack Channel
Reply.io
From $29/user/month or $69/month per account. 14-day free trial. Contact sales for custom annual plans with volume pricing.
- Contact Sales TierContact sales
- Multichannel outreach
- Email, LinkedIn, SMS, Calls, WhatsApp
- AI personalization
- CRM integrations
- B2B database
- Per User Plan$29/user/mo
- Email automation
- CRM integrations
- Analytics
- API access
- Per Account Plan$69/mo
- All-inclusive multichannel outreach
- Email, LinkedIn, SMS, Calls
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- Slack
- HubSpot
Instantly.ai
- BetterContact
- Trigify
- Perplexity
- Aimfox
- OpenAI
- Anthropic
Reply.io
- Salesforce
- Pipedrive
- Copper
- Close
- Google Workspace
- Gmail
- Microsoft 365
- LinkedIn Sales Navigator
- Calendly
- Google Calendar
- Zapier
- Make
- Google Postmaster
- MailToaster.ai
- Sales Navigator
- SMS
- SMTP
- Outlook
- n8n
Instantly.ai or Reply.io: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.