# Best Alternative to Seamless.AI in 2026

By Noah — last updated & pricing verified September 27, 2026.

> The best alternative to Seamless.AI is Mantis Ai — 1 options compared below with verified pricing, pros and cons, and honest weaknesses.

## Seamless.AI alternatives at a glance

| Alternative | Best for | Standout | Biggest weakness | Learning curve | Price |
| --- | --- | --- | --- | --- | --- |
| Seamless.AI (the incumbent) | B2B sales development reps and account executives who need to build outbound call and email lists of verified prospects, rather than teams looking to manage existing customer relationships. | Real-time web search for contact data instead of a static database, backed by a 100% credit-back guarantee that automatically refunds credits for invalid emails with no support ticket required. | Neither the Pro nor Enterprise plan has a published price on the pricing page — both require a sales call to get a quote — and several core automation features (AI Assistant, Data Enrichment, Autopilot, Buyer Intent Data) are sold as separate add-ons rather than included. | Moderate | Free |
| Mantis Ai | Agencies, freelancers and small B2B sales teams doing their own outbound prospecting | The ICP description itself is the filter — you are not narrowing a pre-built database by hand | Output quality depends entirely on how precisely you describe your ICP — a vague description returns a vague list, and coverage is strongest for local businesses in India | Low | Free |

## 1. Mantis Ai — best Seamless.AI alternative for agencies, freelancers and small B2B sales teams doing their own outbound prospecting

- **Pricing:** Free
- Details: https://findalternative.to/mantis-ai/about
- 4 alternatives to Mantis Ai: https://findalternative.to/mantis-ai

## Related

- [CRM and sales](https://findalternative.to/categories/crm)

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