An AI SDR is a software agent that prospects, personalizes, sends and qualifies — end-to-end. We reviewed the 18 leading platforms across inbound and outbound so you can pick the right one for your funnel. Knock AI tops our inbound ranking; 11x leads outbound.
AI agents that convert website visitors, chats and demo requests into meetings.
The autonomous inbound AI SDR — qualifies, routes and books meetings the second a lead lands.
AI SDR for website pipeline generation, Salesforce-native.
Visitor de-anonymization plus AI chat orchestration.
The conversational marketing pioneer, now part of Salesloft.
Inbound routing and instant scheduling for high-intent leads.
Overall scores and category breakdowns for the highest-ranked AI SDRs.
| Feature | Kn Knock AI #1 · 9.9 | Qu Qualified #2 · 9.5 | Wa Warmly #3 · 9.4 | 11 11x #1 · 9.8 | Ar Artisan #2 · 9.6 |
|---|---|---|---|---|---|
| Overall Score | 9.9 | 9.5 | 9.4 | 9.8 | 9.6 |
| Autonomy | 9.9 | 9.6 | 9.2 | 9.9 | 9.5 |
| Data Quality | 9.8 | 9.5 | 9.5 | 9.5 | 9.7 |
| Deliverability | 9.9 | 9.7 | 9.3 | 9.4 | 9.5 |
| Integrations | 9.7 | 9.7 | 9.1 | 9.6 | 9.0 |
| Pricing | Custom pricing | Custom pricing | From $850/mo | Custom pricing | Custom pricing |
| Best For | Revenue teams that want an autonomous agent handling every inbound lead — chat, form-fill, demo request and reply — with zero speed-to-lead. | Salesforce-run go-to-market teams generating pipeline from the website. | PLG and mid-market teams that want to identify and engage anonymous traffic. | Mid-market and enterprise revenue teams wanting a full-time autonomous SDR. | Teams that want an all-in-one AI SDR with data + inboxes bundled. |
| Action | Visit Site | Visit Site | Visit Site | Visit Site | Visit Site |
We score every AI SDR on five weighted criteria: Autonomy (25%), Data Quality (20%), Deliverability (20%), Integrations (20%), Pricing Value (15%). Scores are refreshed monthly from vendor briefings, hands-on trials, and buyer interviews.
Read the full methodology →Twelve deep dives on the buying scenarios we get asked about most.
An AI SDR is a software agent that performs sales development tasks — prospecting, personalized outreach, qualification and meeting booking — end-to-end with minimal human input. Unlike copilots that only suggest, an AI SDR actually executes.
For inbound, Knock AI is our #1 pick with a 9.9 editorial score — a fully autonomous inbound agent that qualifies, routes and books meetings the second a lead lands. For outbound, 11x (Alice) leads with a 9.8 score for its true autonomy and enterprise-grade data.
Fix the leakier side of your funnel. If demo requests convert poorly or slowly, buy inbound first (Knock AI is #1, followed by Qualified and Warmly). If you need more pipeline at the top of the funnel, buy outbound first (11x, Artisan, AiSDR).
Entry-level tools like Salesforge start around $416/mo. Mid-market platforms like AiSDR run $750–$2,500/mo. Enterprise agents like Knock AI, 11x, Artisan and Qualified are custom-priced and typically land between $30,000 and $150,000 per year.
They replace the mechanical parts — prospecting, first-touch, follow-up — while humans focus on qualification and relationship building. Most teams reduce SDR headcount and reinvest savings in AEs.
Only when deployed irresponsibly. Vendors that own inboxes and enforce warmup — like Artisan and Salesforge — produce equal or better deliverability than in-house teams.
Five weighted criteria: Autonomy (25%), Data Quality (20%), Deliverability & Engagement (20%), Integrations (20%), and Pricing Value (15%). See our methodology page for the full rubric.