The AI Agent Index

HubSpot Sales Hub

by HubSpot

★4.5

HubSpot's sales platform with Breeze AI agents for prospecting, deal coaching, and forecasting. Free tier; Starter $15/seat/month; Professional $100/seat/month; Enterprise $150/seat/month, all billed annually.

Apollo.io

by Apollo

★4.5

B2B sales intelligence platform with 275M+ contacts, AI email sequencing, and autonomous outreach. Free plan; paid from $49/user/month. Sequences run fully autonomously once configured.

Instantly.ai

by Instantly

★4.4

Cold email infrastructure platform with autonomous outreach sequences, unlimited sending accounts, and AI reply classification. Growth plan from $47/month. 50,000+ sales teams. SOC 2 certified.

Instantly AI Sales Agent

by Instantly

★4.4

Fully autonomous outbound sales agent: reads your website, identifies your ICP, finds prospects from 450M+ contacts, writes personalised emails, handles replies. From $47/month.

lemlist

by lemlist

★4.3

Multichannel outreach platform covering cold email, LinkedIn automation, and cold calling with AI-generated personalisation at scale. Email Pro from $63/user/month annual. 37,000+ sales teams. SOC 2 Type II.

Make.com

by Celonis (Make)

★4.3

Visual workflow automation platform with advanced branching and data manipulation: connects 3,000+ apps with a drag-and-drop scenario builder for complex multi-step business automations.