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If you are weighing 11x, you have probably already accepted the core promise of the AI SDR category: that software can find prospects, write to them, and book meetings with less human effort than a traditional outbound team. The real question is no longer whether AI can run outbound. It is how much of your pipeline you are willing to hand to an autonomous agent, and how much you want a human rep to stay in control of.
That is what this comparison is for.
What is 11x?
11x is an autonomous AI SDR platform built around two digital workers: Alice, an outbound agent that prospects, researches, personalizes, and runs multichannel sequences, and Julian, an AI phone agent that handles inbound and outbound calls. The platform now markets native contact data, buying signals, website visitor tracking, and deliverability infrastructure alongside the two agents.
We scored 11x and Amplemarket across 231 sub-features in 10 categories using a 0 to 3 scale. Every score is documented and reconciles to its category total. Here is what we found.
Amplemarket scored 219 out of 231 (94.8%); 11x scored 71 out of 231 (30.7%). Amplemarket leads 11x in all 10 categories.
Amplemarket holds a 4.6 out of 5 rating on G2 across more than 571 reviews, and its Duo Copilot keeps a human rep in the loop on every send. Duo's three agents detect a buying signal, research the prospect, and draft a personalized sequence across seven channels; the rep reviews and approves before anything goes out.
11x takes the opposite approach. Alice and Julian are designed to run outbound and calling autonomously, with the buyer acting as an overseer rather than a sender. 11x has expanded significantly over the past year, adding native data, signals, and deliverability tooling, which is reflected in its revised score. The gap that remains is one of completeness and control, not a near-empty product.
Why teams choose Amplemarket over 11x
Teams that move from 11x to Amplemarket, or choose Amplemarket while evaluating 11x, tend to want the same thing: a complete outbound platform with a human rep in control, rather than an autonomous agent acting on its own.
Amplemarket gives them the broadest native channel mix, contact-level intent signals, a five-tool deliverability suite, and a copilot that drafts while the rep approves every send. 11x optimizes for a different goal, full autonomy, where Alice and Julian decide and act with the buyer overseeing rather than sending.
There is a narrow case where 11x fits better: if your aim is to remove the human SDR entirely and you specifically want autonomous AI calling through Julian, 11x offers something most platforms, including Amplemarket, deliberately do not. For most scaling outbound teams, the 148-point scoring gap reflects how much more of the full workflow Amplemarket covers, and how much deeper it covers the parts that earn replies.
What is the difference between Amplemarket and 11x?
The clearest difference is the operating model. 11x runs on autonomous digital workers that execute without a rep in the loop. Amplemarket runs on a human-in-the-loop copilot, where Duo does the research and drafting and a rep makes the final call on every message.
The second difference is scope. Amplemarket is a complete platform spanning native data, seven channels, 100-plus contact-level signals, and a five-tool deliverability suite. 11x covers a narrower set of channels and, while it now markets data, signals, and deliverability, those capabilities are newer and less proven than Amplemarket's.
The third difference is control over the channel mix. Amplemarket gives reps a native dialer they drive themselves. 11x's calling runs through Julian, the autonomous agent, so the rep does not steer the conversation.
High-level comparison
What 11x does
11x positions itself as an AI growth engine built on autonomous digital workers. The product centers on two agents.
Alice is the outbound SDR agent. She identifies prospects from a native contact database, runs live web search to build audiences from current events, enriches records with firmographic and technographic data, researches each prospect, and executes personalized sequences. 11x markets Alice across email and social outreach.
Julian is the AI phone agent. He runs sales conversations in natural language, responds to objections, and adapts mid-call, handling inbound qualification, speed-to-lead, scheduling, and routing. Julian also extends into voice, email, SMS, WhatsApp, and chatbot follow-ups within a sequence.
Around the two agents, 11x now markets a real-time company and lead database (around 400 million contacts), live web search prospecting, website visitor tracking that resolves visitor activity to specific people, signals and triggers (job changes, funding events, tech stack shifts, hiring patterns), deep research, multichannel sequences, smart replies, deliverability and mailbox health infrastructure, CRM and Slack integrations, an API, and SOC2 Type II compliance.
This is a materially broader platform than 11x offered a year ago. Several capabilities that competitors and earlier reviews described as missing are now marketed as native. The scoring below reflects that expansion, while noting where capability depth or real-world execution is not yet independently verified.
Feature scorecard
Amplemarket leads all 10 categories. The widest gaps are in multichannel engagement, buying signals, and data, the areas where Amplemarket's breadth and contact-level depth are hardest to match.
What 11x does well
11x earns credit in a few areas, and stating them fairly is what makes the rest of this comparison trustworthy.
Julian, the AI phone agent, is a real differentiator. Autonomous AI calling that holds a natural conversation, handles objections, and adapts mid-call in many languages is a capability few competitors offer at similar ambition. For a team that specifically wants autonomous calling without a rep on the line, Julian fills a niche that does not exist in most platforms, including Amplemarket, whose dialer is deliberately rep-controlled.
11x has also expanded its platform meaningfully. Native data, live web search, website visitor tracking, and signals are now part of the product rather than gaps a buyer has to fill with separate tools. That reduces the supporting-tool stack earlier buyers needed.
Finally, 11x has strong investor backing, with more than 70 million dollars raised from a16z and Benchmark, which supports continued product investment. Reviewers credit the platform with solid onboarding, strong ICP targeting when the profile is well defined, and a broader multichannel story than many AI SDR tools.
Capability deep-dives
How good is 11x's data?
11x now markets a native, real-time company and lead database of roughly 400 million contacts, with firmographics, technographics, org charts, funding rounds, and hiring signals stitched into a single record, plus live web search for building audiences from current events. 11x states the data is built into the platform rather than resold through third-party seat licenses.
This is a genuine change from the older picture of 11x as a bring-your-own-data tool, and it is the main reason the data score moved up. The open question is depth and accuracy at scale, which is not yet independently verified. Amplemarket's database is 200 million-plus contacts with a verified sub-3% bounce rate and 96.5% phone accuracy, refreshed at 70 million-plus records weekly, which is why it still scores higher in this category.
Does 11x have buying signals?
11x has account-level and behavioral signals. It feeds job changes, funding events, and tech stack shifts directly into Alice and Julian's targeting, and its website visitor tracking resolves visitor activity to specific people at a company, not just IP-to-company matching.
These are largely account-level and behavioral signals. Amplemarket's signal layer reaches the contact level, more than 100 sources tracking buying behavior at the individual level, which is the basis for the remaining gap. Amplemarket's intent signals and competitive intelligence detect who is in-market before a rep reaches out. Fleet, which doubled its buying accounts on signal-based outbound, framed the value of timing this way: "If you have signals out there that are showing you intent, you're seeing some movement that is telling you that now is the time. Ignoring that, you're shooting yourself in the foot big time."
Is 11x really multichannel?
11x now runs sequences across more than email. Alice handles email and social outreach, and Julian handles voice, email, SMS, WhatsApp, and chatbot, with cross-channel triggers so a missed call can fire a follow-up text and an unanswered email can route to another channel.
The remaining gap is breadth and rep control. Amplemarket covers seven channels natively, including a rep-driven dialer, parallel dialing, iMessage, and AI voice notes with voice cloning, and scores a full 36 out of 36 in multichannel engagement. 11x's phone runs through Julian autonomously rather than a dialer the rep controls, which is a different model rather than a like-for-like channel.
How is 11x's social outreach?
11x markets social as a native Alice channel, which is why it now scores in social prospecting rather than zero. What is not yet verifiable from public sources is the depth of that social execution or how it handles platform compliance, so the score is calibrated to reflect a real but unproven channel.
Amplemarket's social automation runs connection requests, messages, and profile actions inside multichannel sequences, and supports batch lead export from social posts, events, and ads, which is the basis for the gap.
Does 11x protect deliverability?
11x now markets built-in deliverability infrastructure: mailbox management, phone spam detection, branded voice calling, and WhatsApp Business profiles, with warm-up, throttling, custom tracking domains, and opt-out handling described on its product pages. One third-party test put 11x's email deliverability around 85%, which is a real number rather than an absence of tooling.
This is why deliverability moved off zero. Amplemarket's five-tool suite covers warmup, inbox placement testing, domain health monitoring, SPF/DKIM/DMARC monitoring, a proactive spam checker, mailbox selection AI, and dedicated IP pools, scoring a full 21 out of 21, which is why it leads.
What 11x costs
11x publishes pricing on its Growth tier and quotes the higher tiers custom. This is a change from a year ago, when pricing was available only through a sales conversation.
11x's Growth plan starts at 36,000 dollars per year, billed annually. It covers up to 5 end users and 2,000 new prospects per month, with 11x-managed Gmail mailboxes, domain setup, warmup, inbox rotation, monitoring, bi-directional CRM sync, and onboarding included. (11x's page lists this tier as 3,750 dollars per month and 36,000 dollars per year; the annual figure is the one to plan against.)
Pro and Enterprise are custom-quoted. Pro raises the limits to 10 end users and 5,000 prospects per month and adds 105-plus language outreach. Enterprise covers unlimited users and 10,000-plus prospects per month, adding SSO, a custom DPA and SLA, custom integrations and API, and a dedicated CSM.
11x prices per lead rather than per send, so the cost stays the same whether Alice runs a few touchpoints or many. 11x states every plan bundles contact data, deliverability, warmup, inbox rotation, meeting scheduling, CRM sync, and onboarding with no implementation fee, and that buyers only bring their own CRM license. Annual is the default, with two- and three-year commitments available on the higher tiers.
11x pricing at a glance
Total cost of ownership vs Amplemarket
Both platforms now bundle data, deliverability, and engagement into the plan rather than charging for them separately, so the comparison is closer than it once was. The differences are the pricing unit, the channel breadth, and the depth of data and signals behind each.
On a like-for-like 5-user basis, 11x's published Growth plan at 36,000 dollars per year is roughly double Amplemarket's 5-seat Startup cost of about 18,000 dollars per year, and Amplemarket bundles more channels, deeper data, and contact-level signals into that price. 11x prices per worker and per lead, so its cost scales with prospect volume rather than seats.
Is 11x worth the price?
11x can be worth it for a specific buyer: a team that wants to put an autonomous worker on outbound, values Julian's autonomous calling, and is comfortable pricing by prospect volume rather than per seat. For a team that wants the broadest native channel mix, contact-level signals, and a human rep in control of outreach quality at a lower per-seat cost, Amplemarket is the stronger fit.
Where the gap favors Amplemarket
The remaining 148-point gap concentrates in a few places. Amplemarket leads decisively on multichannel breadth (36 versus 12), contact-level signals (30 versus 9), and native data depth (29 versus 12). It also leads on a complete deliverability suite, deeper integrations and analytics, and a copilot model where a rep approves every send.
This is not just a scoring difference. DataStax replaced 11x.ai, ZoomInfo, and Salesloft with Amplemarket and generated more than 150 enterprise opportunities in 8 months, won 16 deals, and reached a 55%-plus open rate on AI-recommended leads. Jackson Reimers, Director of New Enterprise Business at DataStax, described the difference in control directly: "I like that I can still use my judgment. The AI generates outreach, but I decide what goes out. That level of control is huge."
That contrast is the heart of the comparison. DataStax found that 11x "operated like a black box," with no way to steer or refine the messaging once the agents took over, while Amplemarket's Duo Copilot let the team keep human decision-making in control. On data and signal quality, Reimers put it plainly: "Instead of just building a list and guessing, I can now say, find me every company using Cassandra, and Duo brings me people who are talking about Cassandra."
The practical effect is consolidation. Amplemarket replaces four to six tools, data provider, engagement, social, deliverability, signals, and AI writing, in one platform, which is exactly the stack DataStax collapsed when it switched.
Which should you choose?
Choose 11x if you want to remove the human SDR and run outbound through autonomous agents, you specifically value Julian's autonomous AI phone calling, and you are comfortable pricing by prospect volume per worker, starting at 36,000 dollars per year on the Growth plan.
Choose Amplemarket if you want AI that prepares and a rep who approves, the broadest native channel mix including a rep-controlled dialer, contact-level intent signals that tell you who to contact and when, a complete deliverability suite, and transparent per-seat pricing with everything included. For teams whose primary challenge is pipeline generation, Amplemarket is the more complete and more controllable platform.
What 11x cannot do that Amplemarket can
These are capabilities Amplemarket scores full or near-full marks on where 11x scores zero or near-zero in our framework. They are not available as 11x add-ons, which is why they sit in the gap rather than the overlap.
The pattern is consistent: 11x covers the autonomous send, while the contact-level signal layer, the rep-controlled channels, the deliverability infrastructure, and the analytics depth that protect and measure that send remain Amplemarket strengths.
The full 231-point breakdown
AI and automation: 8 of 21
11x scores for Alice's autonomous copilot system, AI email writing, sequence generation, reply handling, and research, with limited depth on intent-based personalization and feedback learning. Amplemarket scores a full 21 with Duo's three agents, intent-driven writing, AI reply handling, AI voice cloning, and a feedback loop that improves with every interaction.
Data and lead generation: 12 of 30
11x scores for its native real-time database, live web search, enrichment, and real-time verification. Amplemarket scores 29 on a 200M-plus verified database, sub-3% bounce, 96.5% phone accuracy, weekly refresh, natural language search, and waterfall enrichment.
Buying intent and signals: 9 of 30
11x scores for account-level signals (job changes, funding, tech stack shifts) and website visitor tracking. Amplemarket scores a full 30 with contact-level intent, job change tracking, social engagement monitoring, competitor signals, and community monitoring.
Social prospecting: 6 of 18
11x scores for social as a marketed native Alice channel; depth and compliance handling are unverified. Amplemarket scores a full 18 with automated connection requests, messaging, profile actions, and batch lead export.
Multichannel engagement: 12 of 36
11x scores for email, social, SMS, WhatsApp, voice via agents, and cross-channel triggers and smart replies. Amplemarket scores a full 36, the only platform covering all channels natively, including a rep-controlled dialer, parallel dialing, iMessage, and AI voice notes.
Deliverability: 8 of 21
11x scores for built-in mailbox management, warm-up, spam detection, and tracking domains. Amplemarket scores a full 21 across warmup, inbox placement testing, domain health, authentication monitoring, spam checking, mailbox selection AI, and dedicated IP pools.
Revenue intelligence: 1 of 24
11x scores for basic conversation data from Julian. Amplemarket scores 13, with analytics, heatmaps, and reply sentiment, though it does not offer full deal management or forecasting.
Integrations and platform: 6 of 21
11x scores for CRM, Slack, and G2 integrations and a public API. Amplemarket scores a full 21 with bi-directional Salesforce and HubSpot sync, multi-team hierarchy, and SSO.
Compliance and security: 6 of 15
11x scores for SOC2 Type II, GDPR, CCPA, and CASA compliance. Amplemarket scores a full 15 across the same standards plus SSO and data handling depth.
Support and services: 3 of 15
11x scores for onboarding and customer success resources; reviewers report support quality drops after onboarding. Amplemarket scores a full 15 with priority support, dedicated CSM, QBRs, structured onboarding, and a knowledge base.
Further reading
- Best AI sales engagement platforms in 2026: 10 tools tested
- Best AI sales agents in 2026
- Amplemarket vs Artisan: the complete 2026 comparison
- What a modern GTM stack actually looks like
- Amplemarket Duo Copilot
See Amplemarket in action
See why teams at Deel, Cerebras, and Mistral AI replaced their stack with Amplemarket, consolidating data, engagement, AI, signals, and deliverability into one platform with a human rep in control of every send.
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