vioscaleAI
Comparison

Instantly.ai vs Seamless.ai

No clear leader: Seamless.ai (59.7) 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.

Instantly.ai full profile →Seamless.ai full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Instantly.ai56
Seamless.ai60
Score
vioscaleAI score
Instantly.ai56 / 100medium · 51%
Seamless.ai60 / 100medium · 74%
Pricing
Free tier
Instantly.ai✗
Seamless.ai✓
Model
Instantly.aicommercial
Seamless.aifreemium
Price level
Instantly.aihigh
Seamless.ailow
Starting price
Instantly.ai$94
Seamless.ai–
Transparent
Instantly.ai✓
Seamless.ai✗
Integrations
Count
Instantly.ai2
Seamless.ai21
Security
Gdpr
Instantly.ai–
Seamless.ai✓
Iso27001
Instantly.ai–
Seamless.ai✓
Soc2
Instantly.ai–
Seamless.ai✓
Market
Availability
Content
Faq
Instantly.ai6 items
Seamless.ai7 items

Capabilities

Feature-by-feature on the axes that matter for ai sdr sales agents. “-” means undocumented, not absent.

Capabilities
Deployment model
Instantly.aiFeature of broader sales platform
Seamless.aiFeature of broader sales platform
Autonomous inbox reply handling and objection rebuttals
Instantly.ai✓
Seamless.ai-
Web scraping and linkedin profile ingestion
Instantly.ai✓
Seamless.ai✓
Meeting booking via native calendar integration
Instantly.ai✗
Seamless.ai-
Two way CRM sync to prevent duplicate outreach
Instantly.ai✓
Seamless.ai✓
Multi channel sequencing email and linkedin dm
Instantly.ai✓
Seamless.ai✓
Playbook based guardrails for brand tone
Instantly.ai✗
Seamless.ai-
Waterfall data enrichment for email finding
Instantly.ai✓
Seamless.ai✓
Human in the loop draft approval mode
Instantly.ai✗
Seamless.ai-
Deliverability and spam reputation warmup
Instantly.ai✓
Seamless.ai-
SOC2 type ii
Instantly.ai✗
Seamless.ai✓
GDPR and CCPA prospect data compliance
Instantly.ai✗
Seamless.ai✓
Pricing model
Instantly.aiFlat monthly digital worker
Seamless.aiper_credit_volume_tier

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.

Independently observed

Seamless.ai

A lead generation and contact discovery tool that helps sales teams find accurate phone numbers and email addresses for business decision-makers, with deep integration into CRM systems and sales workflows.

Independently observed

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/moSubscription

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
as of verify ↗

Seamless.ai

HybridFree tier

Free tier available. Pro and Enterprise pricing available via sales contact.

  • FreeFree
    • Email addresses
    • Cell phones
    • Real-time search
    • Export download
  • ProContact sales
    • Email addresses
    • Cell phones
    • Real-time search
    • Unlimited exports
    • Enterprise security and compliance
    • +10 more
  • EnterpriseContact sales
    • Unlimited users
    • Custom feature packages
    • Dedicated success manager
    • Quarterly business reviews
    • Phone support
    • +1 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Instantly.ai✓
Seamless.ai✓
Deployment
Cloud / SaaS
Instantly.ai✓
Seamless.ai✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (1)
  • HubSpot

Instantly.ai

8 total - 7 not shared
  • Slack
  • BetterContact
  • Trigify
  • Perplexity
  • Aimfox
  • OpenAI
  • Anthropic
Independently observed

Seamless.ai

24 total - 23 not shared
  • Salesforce
  • Salesloft
  • Zoho
  • Pipedrive
  • MS Dynamics
  • Okta
  • Google
  • Microsoft Dynamics
  • Keap
  • Insightly
  • Close
  • Copper
  • FreshSales
  • Outreach
  • Zapier
  • n8n
  • Mixmax
  • Greenhouse
  • Cloze
  • Claude
  • ChatGPT
  • SugarAI
  • Breeze Prospecting Agent
Independently observed
Still deciding?

Instantly.ai or Seamless.ai: 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.