AI SDR tools help B2B startups automate prospecting, outreach, and meeting booking without adding headcount. This list covers seven platforms worth knowing in 2026, each with different strengths and approaches. We describe what each tool does and who it suits, without ranking them as better or worse.
How We Picked These Tools
We selected tools that explicitly serve B2B startups or small sales teams, offer AI-driven SDR capabilities such as prospecting, enrichment, sequencing, or meeting booking, and have publicly available information about their features and positioning. The list is ordered arbitrarily and does not reflect quality or preference.
| Provider | Best For |
|---|---|
| Apollo.io | B2B startups seeking an all-in-one GTM platform with data and AI agents |
| Clay | B2B startups needing flexible data enrichment and workflow automation |
| 11x | B2B startups wanting multi-channel AI agents for inbound and outbound |
| Artisan | B2B startups looking for an autonomous AI BDR to run outbound |
| AiSDR | B2B startups prioritizing personalized outreach and lead quality |
| Regie.ai | B2B startups wanting AI-assisted prospecting and personalized messaging |
| Unify | B2B startups seeking a unified outbound platform with AI agents |
The 7 Tools in Focus
#1 Apollo.io
A screenshot of the Apollo.io website.
Apollo.io provides a connected go-to-market system with data, intelligence, and execution layers. It offers access to a large B2B contact and company database, AI agents that research and write outreach, and tools for email and dialing. Startups can use Apollo to find prospects, enrich records, and run outbound campaigns from one platform. It also integrates with existing tools like CRM and email.
#2 Clay
A screenshot of the Clay website.
Clay offers data infrastructure and orchestration for go-to-market teams. It combines data from many providers, runs agentic workflows, and supports outbound plays. Startups can use Clay to enrich leads, build targeted lists, and automate personalized outreach. It also provides a native sequencer and integrations with CRM and ad platforms.
#3 11x
A screenshot of the 11x website.
11x provides AI sales agents for inbound, outbound, and expansion. Its agents handle voice, email, chat, social, and SMS to engage prospects and book meetings. Startups can use 11x to automate lead qualification, outreach sequences, and meeting scheduling. The platform includes a real-time company and lead database, multi-channel sequences, and analytics.
#4 Artisan
A screenshot of the Artisan website.
Artisan offers Ava, an AI BDR that finds leads, enriches them, sends personalized messages, and books meetings. It can run autonomously or alongside a sales team, integrating with existing CRM and tools. Startups can use Artisan to automate outbound campaigns across email and social, with call steps queued for reps. The platform includes a large contact database and intent signals.
#5 AiSDR
A screenshot of the AiSDR website.
AiSDR is an AI SDR platform focused on lead quality over volume. It finds prospects across the web and sends personalized outreach that aims to sound like a top rep. Startups can use AiSDR to automate prospecting, email campaigns, and meeting booking. The platform includes an AI agent named Ami that runs outbound and integrates with CRM systems like HubSpot and Salesforce.
#6 Regie.ai
A screenshot of the Regie.ai website.
Regie.ai offers RegieGO, an AI prospecting platform for sales reps and teams. It uses your website to find matching buyers, enrich contacts, and research reasons to connect. Startups can use Regie.ai to generate emails and call scripts in their voice, and to run outreach via email and a parallel dialer. It includes a built-in CRM and integrates with HubSpot and Salesforce.
#7 Unify
A screenshot of the Unify website.
Unify provides outbound agents for every rep, combining prospecting, research, and sequencing in one platform. It uses frontier AI models to help sellers build lists, write sequences, and run automated plays. Startups can use Unify to consolidate outbound tools, access B2B data, and manage deliverability. The platform includes a chat-based interface and native skills for various outbound tasks.
Which One Should You Choose?
Consider your startup's primary need: if you want an all-in-one GTM system with data and AI agents, Apollo.io may fit. For flexible data enrichment and workflow automation, Clay is an option. If you need multi-channel AI agents for inbound and outbound, look at 11x. For an autonomous AI BDR, Artisan offers Ava. AiSDR focuses on personalized outreach and lead quality. Regie.ai provides AI-assisted prospecting with a built-in CRM. Unify consolidates outbound tools into a single platform. Evaluate based on your team size, existing stack, and desired level of automation.
Final Thoughts
Each tool on this list approaches AI SDR capabilities differently, from all-in-one platforms to specialized agents. B2B startups should assess their specific workflows, budget, and integration needs to find the right fit. This list is meant to inform, not to rank or recommend one tool over another.
Know a company that belongs on this list? Email us at editorial@peekwire.com.