Top 5 AiSDR Alternatives (2025)

We tested the top AI SDR platforms.

Only one skipped cadences and booked meetings on its own.

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Why this teardown

AiSDR is a rising name in the AI sales world. Its pitch? Bundle outbound sequences, LinkedIn and email outreach, and a calling agent into one platform. For ops and growth teams trying to reduce manual work, it’s an enticing offer.

But building cadences isn’t the same as closing deals.

Most “AI SDR” tools still rely on reps to load data, select sequences, write messages, and chase replies. They automate tasks. Not outcomes.

So we tested 6 of the most talked-about platforms in this category—including 11x—to answer a sharper question:

Which one executes?

Who doesn’t just detect a signal, but qualifies the lead, contacts them, handles objections, and books a meeting…without human intervention?

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Platforms We Evaluated

• 11x (Alice + Julian): Digital Workers that execute full-cycle GTM autonomously—across channels, across use cases.
• AiSDR: AI-powered SDR platform with multi-channel sequencing and a built-in voice agent.
• Relevance AI: Drag-and-drop agent builder with API flexibility for building custom workflows.
• Artisan: Human-like AI reps that run email campaigns and respond to leads with natural copy.
• Piper: AI SDR that profiles site visitors, chats live, and books inbound meetings.
• Agent Frank: AI agent that finds prospects, personalizes emails, and books meetings.

What We Measured

• True Autonomy: Can the platform detect signals, engage, qualify, and book meetings without humans in the loop?
• Multichannel Execution: Does it natively support Email, LinkedIn, Voice, SMS, WhatsApp—without duct-taped hacks?
• Inbound Response Speed: Can it respond instantly to demo forms, chats, or hot intent surges?
• Setup + Maintenance Load: How long to go live? How much ongoing input is needed to keep it working?
• CRM + Compliance Readiness: Does it support secure bi-directional sync and enterprise-grade workflows?

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11x didn’t just sequence. It executed.

While the others built flows, 11x deployed Digital Workers.

Alice: Our outbound specialist.
Julian: Our inbound AE.

Together, they replaced SDR handoffs, calendaring tools, and workflow builders—executing across every stage without asking for a single prompt, template, or playbook.

Results within a week

Day 0:

• Uploaded 11,700-row CSV with warm and cold leads.
• Alice auto-deduped, enriched with 17+ signals (funding, tech, hiring).
• Email, SMS, WhatsApp, and LinkedIn campaigns launched in minutes.

Day 2:

• Julian fielded an inbound demo form.
• Called in 14 seconds. Handled objections. Qualified fit.
• Booked the meeting. Updated the CRM. Alerted Slack.

Day 4:

• Alice detected decay in email opens.
• Shifted to WhatsApp + SMS. Rewrote messaging on the fly.
• Surfaced a “cold” lead that booked on Day 6.

All in under a week. No reps writing follow-ups. No managers approving flows. No consultants charging for enablement.

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Where other platforms break down

2. Relevance AI

Strengths

• Drag-and-drop agent builder with powerful APIs
• Deep database and integration flexibility
• SOC2 and privacy standards

Gaps

• Not sales-focused—requires custom logic for outbound
• No templates or playbooks
• No native CRM routing or booking flows
• Credits-based pricing and steep learning curve

→ Best for AI engineers who want to build sales agents—not for GTM teams who need them out of the box.

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3. Artisan

Strengths

• ChatGPT-style email writing for cold outreach
• Realistic copy tone with some basic reply logic
• Freemium access for startups

Gaps

• No full-cycle booking or SDR coverage
• Email + LinkedIn; no SMS / WhatsApp / voice.
• Little CRM automation or signal ingestion
• Needs constant supervision to stay relevant

→ Good AI writing tool. But not an autonomous rep.

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4. Piper

Strengths

• Handles thousands of inbound convos in real time
• Profiles site visitors and serves tailored content
• Books meetings instantly via chat + email

Gaps

• No outbound or prospecting engine
• No native CRM routing
• Limited multichannel fluency
• Higher learning curve for non-technical teams

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5. Agent Frank

Strengths

• Finds leads, personalizes emails, and books meetings with minimal lift.
• Auto-Pilot and Co-Pilot options let teams toggle between hands-off execution and human oversight.
• Pushes replies into Slack for fast AE pickup and collaboration.
• Entry-level pricing makes it accessible for scrappy teams.
• Solid for basic use cases and quick-start outreach.

Gaps

• No support for voice, SMS, LinkedIn, or WhatsApp.
• Needs workarounds for clean lead routing and activity logging.
• Can’t manage nuanced objections or deep qualification logic.
• More complex workflows require technical tuning.
• Doesn’t adjust messaging based on signal changes or reply trends.

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Why 11x is different, and better

Autonomous, not automated: Alice and Julian don’t need playbooks. They operate end-to-end. No reps. No babysitting.

Multichannel by default: Email. LinkedIn. SMS. WhatsApp. Voice. Instant setup. No Zapier. No hacks.

Inbound + outbound in one brain: Detect a demo form? Julian calls. Enrich a cold lead? Alice writes and sends—immediately.

Live learning loops: Message not working? Alice pivots. Signal changed? She rewrites the pitch. No delays.

CRM-native and enterprise-ready: Syncs with Salesforce and HubSpot out of the box. Logs, routes, updates—all handled.

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Don’t just buy tools. Hire better teammates.

Most AI SDR tools still ask you to manage them.
You choose the templates. Monitor the replies. Nudge the lead to book.

11x doesn’t ask. It acts.
That’s why 11x customers report:

• 30% more meetings per AE
• <20 sec response time to inbound
• $100M+ in pipeline booked
• 105+ languages supported

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Want to see it live?

Upload a list. Connect your form.
Let Alice and Julian build your pipeline before Day 2 starts.

Book your 11x demo. No slides. No sandboxes. Just meetings.