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Apollo

by Apollo.io

B2B sales intelligence and engagement platform with AI GTM agents

Product with AI agentsSupervised

Last reviewed 2026-06-18

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Apollo (Apollo.io) is a B2B go-to-market platform that combines a large contact and company database with engagement tooling (sequences, dialer, email) and a growing set of AI features, including an AI writing assistant, natural-language prospecting, signal-triggered sequences, and an end-to-end AI Assistant for agentic workflows. It is known for an accessible, self-serve model with a free tier and transparent pricing. Apollo targets SMB and mid-market sellers first, with enterprise and developer use via its API, MCP server, and CLI. Most of its AI is assistant- and copilot-grade (list building, email drafting); multi-channel sequences and the AI Assistant run within human-approved configurations, so they are treated as supervised agents. Apollo discloses Google Gemini as powering its AI Assistant and conversation intelligence.

What it can do

  • Prospect and build lead lists from natural language

    Assistant

    Builds targeted lead lists from the contact database using natural-language queries; the human reviews and selects.

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  • Draft personalized emails (AI Writing Assistant)

    Copilot

    Generates personalized emails, subject lines, and opening lines for sellers to review and send.

    source

  • Run signal-triggered multi-channel sequences

    Supervised

    Runs multi-channel sequences with follow-ups triggered by signals (job change, form submit) within human-approved sequences.

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  • Execute end-to-end GTM workflows (AI Assistant)

    Supervised

    Runs agentic outbound, summarizes calls, and auto-populates the CRM, with an autopilot mode but a UX that stresses human control.

    source

Strengths

  • +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

Limitations

  • −Data accuracy varies, with reported bounce rates and weaker international coverage
  • −Credit-based consumption can inflate real costs
  • −Support is the lowest-rated part of the product in reviews

Overview

Apollo is a B2B go-to-market platform combining a large contact and company database with engagement tooling and a growing set of AI features. It is known for an accessible self-serve model with a free tier.

What it does

Apollo builds lead lists from natural-language queries (assistant), drafts personalized emails (copilot), runs signal-triggered multi-channel sequences within human-approved configurations, and offers an end-to-end AI Assistant for agentic outbound, call summaries, and CRM auto-population. The sequences and AI Assistant are treated as supervised agents; the AI Assistant has an autopilot mode but a UX that stresses human control.

Integrations & setup

Bi-directional CRM sync (Salesforce, HubSpot, Pipedrive, Zoho), email (Gmail, Outlook), and a Chrome extension over LinkedIn and Gmail. It offers a REST API, an MCP server, and a CLI. Google Gemini powers the AI Assistant and conversation intelligence.

Pricing

Transparent and tiered with a free plan: Free at $0, Basic from around $49 per user per month, and higher Professional and Organization tiers, all with credit-based consumption on top.

Traction

Apollo reportedly raised a $100M Series D in 2023 at a $1.6B valuation led by Bain Capital Ventures, for roughly $250M total, and cites tens of thousands of paying customers (reported figures, not audited).

Best for / not for

Best for SMB and mid-market sellers who want an affordable all-in-one database and engagement tool, plus developers via the API. Less suited to teams needing the highest data accuracy or strong international coverage.

Alternatives

Outreach and Salesloft are engagement-platform peers; Clay focuses on data enrichment and list building.

What people are saying

We aggregate real LinkedIn discussion into sentiment for the agents people search most. Apollo isn't tracked yet, want it added? Request tracking.

FAQ

Is Apollo's AI autonomous?+

Mostly no. List building is assistant-grade and email drafting is a copilot. Multi-channel sequences and the AI Assistant run within human-approved configurations, with an autopilot mode but a UX that stresses human control, so they are treated as supervised agents.

What model powers Apollo's AI?+

Apollo discloses Google Gemini as powering its AI Assistant and conversation intelligence. The rest of its stack is not publicly specified.

Sources

Last reviewed 2026-06-18

Alternatives & related

Outreach
Sales engagement platform with an AI agent suite for revenue teams
Salesloft
Sales engagement platform with Rhythm AI prioritization and Drift chat
Clay
Programmable GTM data platform with AI research agents (Claygent)
Regie.ai
AI sales prospecting platform with autonomous Auto-Pilot agents