Apollo.io
Best for: B2B sales teams that want contact data, enrichment and outbound sequencing in one platform.
Not rated
- Starting price
- $0Freemium; paid per-seat plans with annual and monthly billing options.
- Free plan
- Yes
Comparison
Apollo.io vs Seamless.AI 2026: Data, Credits & Engagement Workflow
Different strengths for different teams.
Apollo.io and Seamless.AI both support prospect data and outbound workflow, but Apollo is the broader data-to-engagement platform while Seamless.AI is easier to frame around real-time contact search, reveals and Connect.
Independent research
Pricing verified
Independent evaluation
Updated Sep 2026
TL;DR
Different strengths for different teams.
Apollo publishes paid annual-billed seat references; Seamless.AI publishes a Free 50-credit plan, but current first-party Seamless sources conflict on whether the Pro 10,000-credit allowance is annual or monthly and exact paid dollar pricing remains unresolved. That difference changes procurement visibility, while data quality still requires a common sample if it is decision-critical.
Read our full verdict →Seamless.AI
Best for: Teams that want B2B contact discovery and enrichment with a Free entry point.; Sales teams that want contact data plus Connect emailing/calling/tasks in the same product.
Not rated
- Starting price
- $0 Free plan (1 user, 50 credits); paid price not verified on current official pageFree plan plus paid Pro/Custom tiers. Current official pricing page states Pro starts with 10,000 annual credits and Custom uses a daily credit allotment for 5+ license tiers; exact paid prices are not published in the current evidence set.
- Free plan
- Yes
Side-by-side comparison
Key canonical facts from each Software record.
| Feature | Apollo.io | Seamless.AI |
|---|---|---|
| StackVouch Score | Not rated | Not rated |
| Best for | B2B sales teams that want contact data, enrichment and outbound sequencing in one platform. | Teams that want B2B contact discovery and enrichment with a Free entry point.; Sales teams that want contact data plus Connect emailing/calling/tasks in the same product. |
| Starting price | $0Freemium; paid per-seat plans with annual and monthly billing options. | $0 Free plan (1 user, 50 credits); paid price not verified on current official pageFree plan plus paid Pro/Custom tiers. Current official pricing page states Pro starts with 10,000 annual credits and Custom uses a daily credit allotment for 5+ license tiers; exact paid prices are not published in the current evidence set. |
| Free plan | Yes | Yes |
Feature comparison
Editorial comparison points for sales and prospecting workflows.
| Feature | Apollo.io | Seamless.AI | Best fit |
|---|---|---|---|
| Free evaluation | $0 Free tier | 1 Free user / 50 credits | No declared winner |
| Current paid-price evidence | Basic $49/seat/month billed annually; higher paid tiers published | Exact paid dollar price unresolved; first-party sources conflict on whether the Pro 10,000-credit allowance is annual or monthly | No declared winner |
| Engagement workflow | Broader native data-to-engagement workflow | Connect supports email/phone/task workflow | No declared winner |
| API path | API-related capability documented; verify entitlement | API capability documented; verify entitlement and usage economics | No declared winner |
| Data quality | Validate on the same ICP sample | Validate on the same ICP sample | No declared winner |
Pricing
Apollo.io
- Starting price
- $0Freemium; paid per-seat plans with annual and monthly billing options.
- Free plan
- Yes
- Pricing model
- Freemium; paid per-seat plans with annual and monthly billing options.
- Last verified
- 2026-09-23
Seamless.AI
- Starting price
- $0 Free plan (1 user, 50 credits); paid price not verified on current official pageFree plan plus paid Pro/Custom tiers. Current official pricing page states Pro starts with 10,000 annual credits and Custom uses a daily credit allotment for 5+ license tiers; exact paid prices are not published in the current evidence set.
- Free plan
- Yes
- Pricing model
- Free plan plus paid Pro/Custom tiers. Current official pricing page states Pro starts with 10,000 annual credits and Custom uses a daily credit allotment for 5+ license tiers; exact paid prices are not published in the current evidence set.
- Last verified
- 2026-09-27
What matters in practice
Apollo currently publishes Free at $0 and Basic at $49/seat/month billed annually, with higher paid tiers also public. Seamless.AI currently lists one Free user with 50 credits. Its pricing page says Pro starts with 10,000 annual credits, while a current Seamless education page says Pro License users receive 10,000 Universal Credits per month. This is a first-party source conflict; StackVouch does not reconcile it and exact paid dollar pricing remains UNKNOWN. Seamless also documents Connect and API capability, so it should not be described as data-only. No accuracy winner is assigned without a common benchmark.
Final verdict
Choose Apollo when broader data-to-engagement workflow and public paid-seat references matter. Shortlist Seamless.AI when its real-time search/Connect workflow and Free 50-credit evaluation fit. Obtain Seamless paid commercial terms and confirm the live Pro credit cadence, then test the same ICP sample before comparing usable-contact cost.
Evidence
Sources & verification
Key product facts on this page were checked against the sources below. Pricing, plan names and feature entitlements can change.
Continue your evaluation
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