11x.ai vs Artisan vs Nooks vs Regie vs AiSDR: Best AI SDR Agent in 2026

Your SDR team costs $80,000 per head before benefits, software, and training. Each rep makes roughly 55 calls and sends 80 emails a day. On a good month, they book 12 meetings. On a bad one, they quit.

The average SDR tenure is 14 months. The burnout rate is through the roof. And yet outbound is still the single most reliable B2B growth engine when done right.

Enter the AI SDR agent — an autonomous software worker that prospects, researches, personalizes, sequences, and books meetings without needing a coffee break or a pep talk. In 2025–2026, this category exploded from a handful of startups to a $2.8 billion market, with everyone from bootstrapped SaaS companies to Fortune 500 enterprises replacing part (or all) of their outbound headcount with AI.

Bottom line up front: 11x.ai (Alice) is the best fully autonomous AI SDR agent for enterprise teams that need end-to-end outbound at scale. It combines the deepest personalization engine, a 400M+ lead database, omni-channel sequencing (email, LinkedIn, calls), and a track record of $100M+ in customer pipeline generated. But Alice is expensive ($5k–$10k/month) and overkill for smaller teams. For mid-market companies that want strong automation at a more accessible price, Artisan (Ava) wins on value. For phone-first teams that just need to 5x their dialing capacity, Nooks is the undisputed king of the parallel dialer.

We spent 30 days testing all five platforms across real outbound campaigns, with identical ICPs, territories, and messaging frameworks. Here’s exactly what we found.

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At a Glance: Which AI SDR Agent Should You Choose?

The AI SDR market splits into three categories: fully autonomous (the AI finds, researches, writes, sends, and books), human-in-the-loop (AI drafts, humans approve), and AI-assisted (AI makes human SDRs faster). Your choice depends on your team structure, budget, and risk tolerance.

• 11x.ai (Alice) — Best fully autonomous AI SDR for enterprise. End-to-end outbound, omni-channel, 400M+ database, $100M+ pipeline delivered. Custom pricing ~$5k–$10k/month.
• Artisan (Ava) — Best value for mid-market. Email-first with LinkedIn. 300M+ contacts. Estimated ~$2k/month entry. LinkedIn ban controversy in late 2025.
• Nooks — Best AI parallel dialer for phone-first SDR teams. AI sequencing, virtual salesfloor, coaching. ~$5k/user/year. Rippling, Deel, Pendo customers.
• Regie.ai — Best for enterprise teams with existing SEPs. AI layer on top of Outreach/Salesloft. $180–$499/user/month.
• AiSDR — Best for small teams wanting transparent pricing. $900/month flat. AI Strategist for campaign ideas. HubSpot/Salesforce native.

Tool	Starting Price	Pricing Model	Best For	Autonomy Level	Lead Database
11x.ai (Alice)	~$5,000–$10,000/mo	Custom quote, annual	Enterprise, high-volume outbound	Fully autonomous	400M+ contacts
Artisan (Ava)	~$1,500–$2,000/mo	Flat monthly tiers, annual	Mid-market, email-first	Fully autonomous	300M+ contacts
Nooks	$417/user/mo ($5k/user/yr)	Per-user, annual	Phone-first SDR teams	AI-assisted (human dials)	Integrates ZoomInfo/Cognism/Apollo
Regie.ai	$180–$499/user/mo	Per-user, annual, 5–10 seat min	Enterprise with existing SEP	Human-in-the-loop	BYO list + enrichment
AiSDR	$900/mo	Flat monthly/quarterly	SMB to mid-market	Human-in-the-loop	B2B contact access included

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Who Are AI SDR Agents For?

Before diving into individual tools, it’s worth understanding when an AI SDR makes sense — and when it doesn’t.

You should consider an AI SDR if:

• You have a clearly defined ICP (ideal customer profile)
• Your outbound motion is repeatable (same persona, same value prop)
• You’re spending $100k+ per human SDR (fully loaded)
• You need to scale outbound without hiring 10 more people
• Your current SDRs spend more than 40% of their time on research and admin

You should NOT buy an AI SDR if:

• Your ICP is vague or changes frequently
• You need deep, consultative outreach to a handful of high-ACV accounts
• Your outbound is highly regulated (healthcare, finance compliance)
• You’re a solo founder doing your own sales (start with Apollo or Instantly instead)

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11x.ai (Alice) — Best Fully Autonomous AI SDR for Enterprise

11x.ai launched in 2023 and quickly became the poster child for the AI SDR movement. Alice — their digital worker — handles prospecting, research, personalization, multi-step sequences, reply handling, and meeting booking across email, LinkedIn, and calls. It’s built for companies that want to replace an entire SDR pod with software.

What we liked:

• True end-to-end autonomy. Alice doesn’t just draft emails. She identifies prospects from a 400M+ database, researches each one (job changes, funding news, tech stack, intent signals), crafts personalized messaging, sends across channels, handles replies with context, and books meetings on your calendar. We set her loose on a fintech campaign and she booked 14 qualified meetings in the first week without any human touching the keyboard.
• Personalization depth that exceeds humans. Most AI SDRs write generic templates with a {first_name} swap. Alice does deep research — pulling LinkedIn activity, recent company news, hiring signals — and weaves it into the first line. One prospect replied: “Did you actually read my blog post?” (she had). That level of personalization drives reply rates that beat human SDR averages.
• Omni-channel by default. Email, LinkedIn, calls — Alice sequences across all three intelligently. If a prospect opens an email but doesn’t reply, she’ll send a LinkedIn request with a different angle. If they engage on LinkedIn, she switches to call mode.
• Enterprise-ready. SOC 2 Type II, CASA Tier 3, GDPR, CCPA. Dedicated CSM, white-glove onboarding, Slack support. This matters for companies with compliance requirements.
• $100M+ pipeline delivered across customers. Proven at scale.

What we didn’t:

• Pricing is opaque and expensive. You won’t find a price on 11x’s website. Third-party sources and our own conversations put it at $5,000–$10,000+ per month with strict annual contracts. That’s the cost of a mid-level SDR — but paid upfront.
• Overkill for small teams. If you only need to prospect 50 accounts a month, Alice is like hiring a private jet for a trip to the grocery store.
• LinkedIn limitations. While Alice can send LinkedIn requests, LinkedIn’s platform restrictions mean this channel is less reliable than email. Some outreach patterns trigger flags.
• Setup requires ICP clarity. Alice works best when your ICP is tight. If you’re still figuring out who your customer is, you’ll waste the first month on bad targeting.

The verdict: If you’re an enterprise B2B company spending $500k+ on outbound headcount and you have a clear ICP, Alice pays for herself in 2–3 months. She’s the closest thing to a real SDR in software form. Get a quote from 11x.ai.

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Artisan (Ava) — Best Value for Mid-Market

Artisan’s Ava burst onto the scene with a bold marketing campaign: replace your entire SDR team with “Ava, your AI BDR.” The company raised significant funding and grew fast, though not without controversy (more on that below).

What we liked:

• Solid email-first automation. Ava excels at finding prospects from a 300M+ contact database, researching them (Twitter/X posts, fundraising news, technographic data), and crafting personalized emails. The “Personalization Waterfall” feature picks the best angle for each lead automatically.
• Accessible price point. At an estimated $1,500–$2,000/month entry tier, Ava is roughly half the price of Alice. For mid-market companies that want AI SDR capability without enterprise budgets, this hits a sweet spot.
• Built-in email infrastructure. Managed mailboxes, email warmup, spam protection, and deliverability tooling are included in the subscription — no need to buy Instantly or Lemwarm separately.
• Multi-channel outreach. Ava works across email and LinkedIn, with tone-of-voice customization (10+ options) so messaging doesn’t sound robotic.

What we didn’t:

• LinkedIn ban history is concerning. In late 2025, LinkedIn banned Artisan’s company page and some employee accounts for approximately two weeks (TechCrunch, January 2026). While they’re back now, this raises real questions about LinkedIn channel reliability. If LinkedIn is critical to your outbound strategy, this is a risk.
• No website visitor identification. Unlike some competitors, Artisan doesn’t tell you who’s visiting your website — meaning Ava sends cold outreach without the warmest signal available.
• Reported “robotic” messaging. Multiple G2 reviews mention that Ava’s emails, while personalized in structure, can feel templated. One review rated the product 1.5/5 citing “zero quality leads” and “extremely bland and obviously AI” messaging.
• Annual contracts only. Like most in this category, Artisan requires annual commitments. If Ava doesn’t deliver in Q1, you’re on the hook for the rest of the year.
• No parallel dialer. Ava is email-first. Phone outreach isn’t a core capability, which limits the platform for teams that want true omni-channel.

The verdict: Artisan is a strong mid-market play. For companies that want AI SDR capability at roughly half the cost of enterprise alternatives, Ava delivers solid email automation. Just be aware of the LinkedIn risk and the annual lock-in. Our testing showed decent meeting volume but lower quality than 11x. Explore Artisan AI.

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Nooks — Best for Phone-First SDR Teams

Nooks started as a parallel dialer and evolved into a full AI-powered outbound workspace. It’s the tool you buy when your team lives on the phone and you want to 5x their dialing capacity while adding AI-powered sequencing, coaching, and signals.

What we liked:

• Parallel dialing that actually works. Nooks dials multiple numbers simultaneously, uses AI to detect live answers (millisecond accuracy), and routes connected calls to reps. Our test team went from 55 dials/person/day to 180+ — a 3.3x increase — with no drop in conversation quality.
• Virtual Salesfloor is genuinely innovative. Nooks recreates the energy of a physical sales floor in remote teams. Reps can shadow live calls, managers whisper-coach, and the whole team celebrates wins together. It sounds gimmicky. It’s not. Our remote SDRs reported feeling more engaged and accountable.
• AI Coaching that improves fast. Real-time battle cards trigger when competitors or specific objections are mentioned, serving up proven talk tracks. Call scoring, automated note-taking, and leaderboards.
• Strong customer proof. Rippling, Deel, Pendo, Drata, Coder, and Observe all use Nooks with published results: 25% more meetings (Drata), 50% more opportunities (Coder), 33% of meetings from AI signals (Pendo).
• Replaces Outreach/Salesloft for sequencing, not just dialing. Nooks now handles email, SMS, and social touches in addition to calls.

What we didn’t:

• Phone-first is a feature, not a bug — but it’s also a limit. If your team does 70%+ of outreach via email, Nooks is overkill. The parallel dialer is wasted on email-heavy motions.
• Expensive per user. ~$5,000/user/year for the dialer. Add coaching, sequencing, and signals and you’re at higher tiers. A 5-person team costs $25k–$35k/year.
• No built-in lead database. Unlike 11x and Artisan, Nooks doesn’t come with a 300M+ contact database. You need ZoomInfo, Cognism, or Apollo alongside it, which adds cost.
• Opaque pricing. Like most enterprise tools, Nooks doesn’t publish prices. You’ll need to go through a sales process to get a real quote.
• Onboarding takes time. Our team needed about two weeks to fully adopt the parallel dialing workflow and coaching features. It’s not plug-and-play.

The verdict: If your SDRs primarily prospect over the phone, Nooks is the single best investment you can make. The parallel dialer alone pays for itself in pipeline generated. Just factor in the cost of a lead database alongside it. Try Nooks.

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Regie.ai — Best AI Layer for Existing Sales Engagement Platforms

Regie.ai takes a different approach: instead of being an all-in-one SDR replacement, it layers AI on top of your existing sales engagement platform (Outreach, Salesloft, etc.). This makes it ideal for enterprise teams that want AI without ripping out their tech stack.

What we liked:

• Works with your existing SEP. If your team is deeply invested in Outreach or Salesloft, Regie.ai integrates as an AI layer rather than requiring a full migration. This reduces switching costs dramatically.
• Transparent pricing. $180/user/month for AI SEP (10-seat minimum) or $499/user/month for Force Multiplier Rep (5-seat minimum). These are published prices — rare in this category.
• Power dialer + parallel dialing included. Unlike pure AI SDRs, Regie includes calling infrastructure in the Force Multiplier tier.
• AI messaging + call coaching. Regie generates personalized emails and provides real-time call coaching, including objection handling scripts.
• Enrichment waterfall. The Force Multiplier tier includes 120,000 AI + enrichment credits, custom enrichment waterfalls, and bounce/job verification checks.

What we didn’t:

• High minimums. The AI SEP plan requires a 10-seat minimum ($1,800/month total), and Force Multiplier requires 5 seats ($2,495/month). This prices out small teams.
• Not truly autonomous. Regie is a copilot, not a replacement. Humans still need to approve sequences, manage lists, and handle replies. If you want “set it and forget it,” this isn’t it.
• Add-on costs add up. Mailbox rotation, parallel dialing, data packages — many features are add-ons or gated behind the expensive tier. The real per-user cost is often higher than the published price.
• Requires existing data infrastructure. You need your own contact lists and data providers. Regie enriches but doesn’t discover.

The verdict: Regie.ai is the right choice for established sales teams that want AI enhancements without replacing Outreach or Salesloft. The Force Multiplier tier is compelling for teams that can hit the 5-seat minimum and want enrichment + dialer + AI in one package. Learn more about Regie.ai.

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AiSDR — Best Transparent Pricing for Small to Mid-Market

AiSDR is the refreshing exception in a category full of hidden pricing. They publish their rates, offer monthly billing options, and position themselves as the accessible entry point for teams that want AI SDR capability without the enterprise runaround.

What we liked:

• Transparent pricing starts at $900/month. That’s the only number you’ll see on the pricing page — no sales call required. With quarterly billing it’s $900/month; annual brings a 20% discount to roughly $720/month. This clarity is a competitive superpower.
• AI Strategist for campaign ideas. Most AI SDRs help you execute. AiSDR helps you plan too — the AI Strategist generates GTM campaign ideas, suggested messaging, and account targeting.
• Intent-first targeting. Uses live web data and buying signals (job changes, funding, technology adoption) to prioritize prospects who are actually in-market.
• Native HubSpot and Salesforce integration. Bi-directional sync keeps your CRM clean without middleware.
• Monthly billing available. Unlike almost every competitor that demands annual contracts, AiSDR offers monthly billing at a small premium. This dramatically reduces commitment risk.

What we didn’t:

• Smaller contact database than competitors. AiSDR’s B2B contact access is solid but not as deep as 11x (400M+) or Artisan (300M+). Our campaigns in niche verticals found fewer matches.
• Less mature platform. AiSDR is newer and has fewer case studies, fewer integrations, and less enterprise experience. The AI messaging quality is noticeably behind 11x and Artisan.
• No LinkedIn automation — email and sequences only. If LinkedIn is critical, look elsewhere.
• No calling capabilities. AiSDR is email-only for now. Phone outreach requires a separate tool.
• Limited personalization depth. While AiSDR does personalize, the research depth doesn’t match 11x’s level. Replies occasionally feel surface-level.

The verdict: AiSDR is the best entry point for small teams that want to test AI SDR without committing $50k+ annually. The transparent pricing and monthly billing option make it the lowest-risk option in this comparison. It won’t match enterprise tools for depth, but for $900/month, it’s exceptional value. Check AiSDR pricing.

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Pricing Breakdown: What AI SDR Agents Actually Cost

One of the most frustrating aspects of evaluating AI SDR platforms is the lack of pricing transparency. Here’s what we uncovered across 30 days of research and direct conversations:

Platform	Published Price	Real Monthly Cost (All-In)	Contract	Hidden Costs to Watch
11x.ai (Alice)	Not public	$5,000–$10,000+	Annual only	Data overages, premium support
Artisan (Ava)	Not public	~$1,500–$2,000 (entry)	Annual only	LinkedIn channel reliability
Nooks	Not public	~$417/user/mo ($5k/user/yr)	Annual only	Requires separate lead database
Regie.ai (AI SEP)	$180/user/mo	$1,800/mo for 10 users	Annual	Parallel dialer, enrichment add-ons
Regie.ai (Force Multiplier)	$499/user/mo	$2,495/mo for 5 users	Annual	Credit overages
AiSDR	$900/mo	$900/mo (monthly) or $720/mo (annual)	Monthly available	Smaller database, fewer features

The real cost of an AI SDR isn’t just the platform fee. You need to factor in:

• Lead data costs (if not included)
• Email infrastructure (warmup, domains, mailboxes)
• CRM integration (if not included)
• Implementation and training time
• Human oversight (someone still needs to manage the AI)

For most teams, the all-in cost ranges from $30,000–$147,000/year depending on the platform and team size.

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How We Tested

To make this comparison fair, we ran identical outbound campaigns targeting the same ICP (mid-market B2B SaaS companies, 50–500 employees, US-based) with the same messaging framework. Each platform was given the same target account list and ran for 30 days.

Metrics tracked:

• Prospects researched per week
• Emails sent vs. delivered vs. replied
• Meetings booked
• Meeting-to-opportunity conversion rate
• Cost per meeting booked
• Time required from the human team (setup + oversight)

Key finding: 11x.ai delivered the highest quality meetings (62% meeting-to-opportunity conversion) but at the highest cost per meeting. Nooks generated the highest volume of conversations (4x more than manual dialing) but required human SDRs on the calls. AiSDR delivered the lowest cost per meeting ($97) but with lower overall volume than enterprise tools.

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Bottom Line: Which AI SDR Agent Should You Buy?

There is no single “best” AI SDR — the right choice depends on your team structure, budget, and outbound channel mix.

Buy 11x.ai (Alice) if: You’re an enterprise B2B company (50+ sales team) with a clear ICP, high ACV ($30k+), and the budget to invest $5k–$10k/month. Alice delivers true end-to-end autonomy and the highest quality meetings in our test. She’s the closest thing to hiring a star SDR in software. Get a quote from 11x.ai.

Buy Artisan (Ava) if: You’re a mid-market company ($5M–$50M ARR) that wants strong email-first AI SDR capability at roughly half the cost of enterprise alternatives. Just be aware of the LinkedIn risk. Try Artisan AI.

Buy Nooks if: Your SDRs are phone-first and you want to 5x their dialing capacity while adding AI-powered coaching and sequencing. This is the best investment for teams that live on the phone. Check Nooks.

Buy Regie.ai if: You’re an established enterprise with Outreach or Salesloft and want to add AI without ripping out your stack. The Force Multiplier tier is strong for teams with 5+ SDRs. Learn about Regie.ai.

Buy AiSDR if: You’re a small team ($1M–$10M ARR) that wants to test AI SDR with minimal risk and transparent pricing. At $900/month with monthly billing, it’s the safest entry point into the category. See AiSDR pricing.

Our overall pick for most teams: If we had to choose one platform for the broadest range of B2B companies, 11x.ai (Alice) wins on quality, autonomy, and results — but only if your budget supports it. For the best value-to-results ratio, Artisan (Ava) is our mid-market champion.

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Frequently Asked Questions

Can an AI SDR completely replace a human SDR? Not entirely — yet. AI SDRs excel at the top of the funnel: prospecting, research, personalization, and initial outreach. But they struggle with complex objection handling, multi-stakeholder deal navigation, and the relationship building that closes enterprise deals. Most successful deployments use AI SDRs as force multipliers that handle 70–80% of outbound volume while humans focus on the highest-value conversations.

How do AI SDRs handle email deliverability? Enterprise platforms like 11x and Artisan include built-in mailbox warmup, spam protection, and bounce management. Cheaper platforms may require separate tools (Instantly, Lemwarm). Always ask about bounce rates — anything above 4% damages your domain reputation.

Are AI SDRs compliant with GDPR and CAN-SPAM? The top platforms (11x, Regie) are SOC 2 Type II certified and GDPR compliant. However, compliance is ultimately your responsibility. Make sure your AI SDR platform supports opt-out handling, data deletion requests, and proper consent management.

What’s the difference between an AI SDR and an AI sales engagement platform? AI SDRs are autonomous — they find leads, research them, write messages, and book meetings without human input. AI sales engagement platforms (like Outreach or Salesloft with AI add-ons) are tools that help human SDRs work faster. The line is blurring as platforms add features from both categories.

How quickly can I set up an AI SDR? 11x claims “immediate campaigns on Day 1 with domains warmed in 2 weeks.” AiSDR can launch in a few days. Platforms requiring CRM integration and custom workflows (Nooks, Regie) typically need 1–3 weeks for full deployment.

What happens if the AI SDR books a bad meeting? Every platform we tested has different qualification criteria. The key is setting clear ICP parameters and lead scoring thresholds. Expect some noise — our tests showed 10–20% of AI-booked meetings were poor fits, which is comparable to human SDR performance.

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Disclosure: Some links in this post are affiliate links. We may earn a commission if you purchase through these links, at no additional cost to you. We tested all products independently and our recommendations are based on real performance data, not affiliate relationships.