Apollo vs Seamless.AI
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Apollo if you want b2b sales intelligence and engagement platform with ai gtm agents (Supervised agent, freemium); choose Seamless.AI if you want real-time b2b contact search engine with ai prospecting and outreach (Assistant, freemium).
| Apollo | Seamless.AI | |
|---|---|---|
| What it is | B2B sales intelligence and engagement platform with AI GTM agents | Real-time B2B contact search engine with AI prospecting and outreach |
| Type | product-with-agents | product-with-agents |
| Autonomy | Supervised agent | Assistant |
| Pricing | freemium · Free $0; Basic from $49/user/mo (annual) | freemium · Free tier (limited lifetime credits); Basic reportedly ~$147/mo; Pro and Enterprise quote-based |
| Best for | smb, mid-market, enterprise, developers | smb, mid-market, enterprise |
| Deployment | saas, api | saas, api |
| Modalities | text, email, voice, api | text, email, voice, browser, api |
| Models | gemini, model-agnostic | proprietary |
| Protocols | mcp, rest-api, function-calling | rest-api |
| Integrations | Salesforce, HubSpot, Pipedrive, Zoho, Gmail, Outlook | Salesforce, HubSpot, Salesloft, Outreach, Pipedrive, LinkedIn |
| Capabilities | 4 documented | 5 documented |
Apollo
- +Affordable all-in-one database plus sequencing with a free tier that lowers the barrier
- +Fast, intuitive filters and prospecting
- +Developer-friendly: REST API, MCP server, CLI, and published llms.txt
- -Data accuracy varies, with reported bounce rates and weaker international coverage
- -Credit-based consumption can inflate real costs
Seamless.AI
- +Fast, self-serve real-time contact lookup with a free tier and a Chrome extension over LinkedIn
- +Credit-back guarantee on invalid emails per its homepage
- +All-in-one: search, enrichment, intent signals, and built-in email/calling in one platform
- -Data accuracy and bounce rates are a recurring complaint in user reviews
- -Pro and Enterprise pricing is gated behind a demo, and credit consumption can inflate real cost
Which should you choose?
Apollo is b2b sales intelligence and engagement platform with ai gtm agents, best for smb, mid-market, enterprise, developers. Seamless.AI is real-time b2b contact search engine with ai prospecting and outreach, best for smb, mid-market, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.