AI SDR agents are taking over the heavy lifting of sales development, and 2025 is the year they go mainstream.
You're already behind if you're still manually prospecting, following up, and juggling outreach across email and LinkedIn.
Today’s top B2B sales teams are automating everything - and all that without sacrificing personalization or timing.
But with dozens of tools on the market, which ones are actually worth it?
In this guide, I’ll break down the 10 best AI SDR agents to help you scale outbound, increase reply rates, and close more deals in 2025.
From all-in-one platforms to niche email or data enrichment tools, we’ve got the shortlist that’ll save you hours (and headaches).
But first, let’s quickly explain what AI SDR agents actually are.
Factors to Consider When Evaluating AI SDR Agents
Choosing the right AI SDR agent isn’t just about flashy features - it’s about finding a platform that fits your sales strategy, goals, and tech stack.
Here are the key factors to consider before making your decision:
1. Main Outreach Channels
Some AI SDR agents are designed for email-only outreach.
Others support LinkedIn, SMS, live chat, and even cold calling.
Evaluate where your prospects are most active and make sure the platform can support those channels effectively.
2. Intent and Trigger Capabilities
AI-powered outreach works best when it’s driven by buyer intent.
Look for platforms that can act on real-time signals - such as website visits, job changes, or content engagement - so your messages are timely and relevant, not just automated noise.
3. Personalization Quality
The difference between ignored emails and booked meetings often comes down to personalization.
Your AI SDR should be capable of crafting messages that feel tailored, using dynamic fields, context-based language, and tone adjustments that align with each persona.
4. Sequence Control and Smart Follow-Ups
A good AI SDR agent doesn’t just send one message and move on.
It should manage multi-step sequences, respond dynamically to opens and clicks, and know when to pause or adapt based on the lead’s behavior.
5. Integrations and Workflow Compatibility
Your AI SDR platform should fit seamlessly into your current stack. Look for integrations with your CRM, calendar, Slack, and enrichment tools.
The more aligned your systems are, the smoother your workflow will be.
6. Reporting and Optimization
An AI SDR should help you get better over time.
Choose a platform that offers clear performance insights - like open and reply rates, meeting conversion, and engagement by segment—and ideally provides recommendations to improve your sequences.
What Are the Best AI SDR Agents to Try in 2025?
- Warmly: Intent-based outbound done for you.
- Lavender: AI-powered email assistant for better open and reply rates.
- Regie.ai: AI content generation and sequencing for outbound sales.
- Drift: Conversational AI that engages prospects in real time.
- Apollo.io: Prospecting, enrichment, and outreach in one platform.
- Clay: Hyper-personalized outbound powered by data aggregated from multiple sources.
- Exceed.ai: AI assistant that qualifies leads and nurtures them via email.
- Outplay: AI-led engagement at scale.
- Close: All-in-one CRM and sales engagement with native calling, email, and automation.
- Reply.io: Multichannel outreach platform with smart automation.
1. Warmly
Best for: Intent-based outbound and automated prospecting across your website, LinkedIn, and email.
Who is it for: Perfect for lean B2B sales teams looking to scale outreach without hiring more SDRs.
Warmly is an AI-powered revenue orchestration platform built for modern sales teams.
Its AI SDR Agent is the newest addition to the platform’s versatile capabilities.
Warmly’s AI SDR agent automates everything from prospecting to outreach, using buyer intent signals to trigger timely, personalized messages across email and LinkedIn so your team can focus on closing, not chasing.
How Does Warmly’s AI SDR Agent Work?
Warmly’s AI SDR Agent is built to act like a full-time outbound rep that tackles prospecting, qualifying, and engaging leads around the clock.
However, it does more than just send messages.
Thanks to the advanced AI that powers it, Warmly’s AI SDR thinks like a genuine rep, adjusting its timing, tone, and content based on real-time buyer behavior.
Here’s how it works from start to booked meeting:
- Intent detection - Warmly uses a combination of first-party (website visits), second-party (social media activity), and third-party (research intent) data to identify when someone from your target account is actively showing interest.
- Prospecting & lead matching - Warmly scans your ICP across a massive contact database and enriches profiles in real time. The platform identifies key decision-makers, matches them to relevant signals, and prioritizes them based on readiness to buy.
- On-site engagement - Warmly’s AI chatbot instantly engages visitors with personalized conversations relevant to every prospect's level of buying intent.
- Outreach orchestration - The AI SDR Agent also initiates email and LinkedIn outreach with messaging that feels like your best SDR wrote it.
- Smart sequencing & follow-up - The agent adjusts messaging based on behavior, responding to email opens, clicks, or ghosting with relevant follow-ups.
- Handoff to human reps - Once a prospect engages or books a meeting, the agent loops in your human rep—booking meetings directly into calendars or routing them to the right AE.
All of this runs in the background while your team works on deals.
And because it’s built to mimic human SDR behavior, the engagement feels natural - not robotic.
Key Features
- Automated multichannel outreach with dynamic triggers.
- Website visitor identification.
- AI Chat for live lead engagement on your website.
- AI Warm Offers to personalize your pitch based on the buyer.
- CRM integration and Slack alerts for seamless lead routing.
Pricing
Warmly offers a free forever plan that allows you to reveal up to 500 monthly visitors, set up ICP filters to quickly identify high-quality leads, and automate basic lead routing.
If you need more, there are three tiers to choose from:
- Data Only: Starts at $499/mo when billed monthly or $4,000 when billed annually, lets you identify up to 5,000 monthly visitors, first-party intent signals, alerts, and access to Warmly’s B2B prospecting database.
- Business: Starts at $19,000/year for up to 10,000 visitors or $45,000/year for up to 75,000 visitors, everything in Data Only, plus third and second-party signals, sales orchestration, AI Chat, and lead routing.
- Enterprise: Custom pricing, custom number of visitors, everything in Business, plus custom signals and warm calling.
Pros & Cons
✅ Outreach is triggered by real intent instead of random cold lists.
✅ Covers both email and LinkedIn with natural, human-like messaging.
✅ Eliminates manual sales prospecting and follow-ups.
✅ Identifies who your hottest leads are right now.
✅ Live on-site lead engagement.
✅ Highly customizable and trainable AI.
❌ Access to Warmly’s AI SDR is available only on its paid plans.
2. Lavender
Best for: Enhancing sales email effectiveness through AI-driven coaching and personalization.
Who is it for: SDRs and AEs aiming to improve email response rates and pipeline generation.
Lavender is an AI-powered email assistant designed to help sales professionals craft more effective emails.
It aims to boost reply rates and overall engagement by providing real-time feedback and personalization suggestions.
How Does Lavender's AI SDR Agent Work?
Lavender integrates directly into your email platform, analyzing your drafts as you compose them.
It assigns an email score based on factors like clarity, tone, and length, offering instant AI-driven recommendations to enhance the content.
Additionally, Lavender provides personalization suggestions by pulling relevant data from your CRM and other sources, enabling you to tailor your messages more effectively.
Key Features
- Real-time email scoring and coaching - Evaluates emails and offers suggestions to improve clarity and engagement.
- Personalization assistance - Provides data-driven recommendations to customize emails based on recipient information.
- Integrations - Seamlessly connects with platforms like Gmail, Outlook, HubSpot, and Salesloft.
Pricing
Lavender has a freemium plan designed for the most basic users.
It lets you analyze and personalize up to 5 emails per month and provides access to its essential features.
If you need more, there are three paid plans to choose from:
- Starter: $29/mo, includes unlimited email personalization and generation in addition to AI email writer, mobile optimization, etc.
- Individual Pro: $49/mo, everything in Starter, plus dedicated support and more native integrations.
- Team Plan: $99/user/mo, includes aggregated email analytics, accelerated dynamic scoring, content studio access, and more.
Pros & Cons
✅ Improved reply rates and more meetings booked.
✅ User-friendly interface.
❌ Some users report experiencing glitches and occasional crashes, which impact reliability.
3. Regie.ai
Best for: Automating sales prospecting and outreach with AI-driven agents.
Who is it for: Sales teams aiming to scale outbound efforts without increasing headcount.
Regie.ai is an AI-powered sales engagement platform designed to streamline the prospecting process.
Its AI SDR agents autonomously handle tasks such as lead sourcing, personalized messaging, and follow-ups, enabling sales representatives to focus on closing deals.
How Does Regie.ai's AI SDR Agent Work?
Regie.ai’s AI SDR agents operate fully autonomously, managing the entire sales prospecting workflow from end to end.
They start by sourcing leads that fit your ICP, eliminating the need for third-party B2B data providers.
From there, they craft and send personalized outreach messages designed to resonate with each individual contact.
As prospects engage - or don’t - the agents adjust their follow-up strategy dynamically, tailoring timing and content based on real-time responses.
Key Features
- AI-powered lead sourcing - Automatically identifies and sources potential leads without relying on external data providers.
- Personalized email outreach - Uses AI to create customized email content tailored to each prospect.
- Dynamic sequencing - Adjusts follow-up actions based on real-time engagement metrics to enhance prospecting efficiency.
Pricing
Regie.ai has three separate product packages:
- RegieOne Sales Engagement Platform: Pricing is based on the number of prospecting sales reps, starting at $35,000/yr, includes traditional sales engagement workflows alongside Agentic prospecting capabilities, first-party intent, etc.
- AI Agents + AI Dialer: Pricing is based on the number of prospecting sales reps, starting at $35,000/yr, includes AI Agents and AI Dialer.
- AI Agents: Pricing is based on the number of prospecting sales reps, starting at $35,000/yr, includes access to AI Agents alone.
There’s no free trial or plan available.
Pros & Cons
✅ Enables sales teams to expand outreach efforts without additional staffing.
✅ Automates time-consuming tasks, allowing sales representatives to focus on high-value activities.
❌ Steep learning curve regarding integrating and customizing the platform to fit specific workflows.
4. Drift
Best for: Engaging website visitors through real-time conversational marketing to accelerate lead conversion.
Who is it for: Businesses aiming to enhance customer interactions and streamline the sales process via AI-driven chatbots.
Drift is a conversational marketing platform that leverages AI to facilitate real-time interactions with website visitors.
Its AI-powered chatbots are designed to qualify leads, answer queries, and schedule meetings, thereby optimizing the sales funnel and enhancing customer engagement.
However, Drift has been recently acquired by Salesloft, meaning that new customers can only access it through this platform.
How Does Drift's AI SDR Agent Work?
Drift's AI SDR agent operates by seamlessly integrating with a company's website to initiate and manage conversations with visitors.
The AI chatbot engages website visitors in real-time, utilizing natural language processing to understand and respond to inquiries effectively.
It can qualify leads by asking relevant questions and, based on the responses, route them to the appropriate sales representative or schedule meetings directly.
Key Features
- Real-time AI chatbots - Engage visitors instantly, providing timely responses and facilitating immediate interactions.
- Lead qualification and routing - Automatically assesses visitor responses to qualify leads and direct them to the appropriate sales personnel.
- Meeting scheduling - Streamlines the process by scheduling meetings directly with prospects.
Pricing
There’s no pricing information available for Drift ever since Salesloft acquired it.
You’ll have to contact Salesloft’s sales team for more details.
Pros & Cons
✅ User-friendly.
✅ Automates routine tasks such as lead qualification and meeting scheduling, allowing sales teams to focus on closing deals.
❌ Since it’s been acquired by Salesloft, there have been no details on its pricing, meaning it’s probably expensive.
5. Apollo.io
Best for: Comprehensive sales intelligence and engagement, integrating AI to enhance prospecting and outreach.
Who is it for: Sales teams and business development professionals seeking an all-in-one platform for lead generation, enrichment, and multichannel engagement.
Apollo.io is an AI-powered sales platform that combines a vast B2B contact database with tools for prospecting, engagement, and analytics.
Its AI Sales Assistant streamlines the sales process by automating tasks such as lead scoring, email personalization, and outreach sequencing, enabling teams to operate more efficiently and effectively.
How Does Apollo.io's AI Sales Assistant Work?
Apollo.io’s AI Sales Assistant improves sales workflows by combining smart lead scoring, hyper-personalized messaging, and intelligent outreach sequencing.
It begins by analyzing your ideal customer profile and historical engagement data to prioritize the prospects most likely to convert.
From there, it taps into Apollo’s vast contact database to craft personalized emails, pulling in relevant buyer signals to make each message resonate.
The assistant can also generate entire outreach campaigns, optimizing when and how to engage leads for the best possible results, all while saving your team time and lifting response rates.
Key Features
- Extensive B2B database - Access to over 210 million contacts and 35 million companies for comprehensive prospecting.
- AI email assistant - Helps you write engaging and personalized emails using AI-driven recommendations.
- Conversation analysis - AI extracts valuable insights by transcribing and analyzing sales calls, improving win rates and helping you refine your strategy.
Pricing
Apollo has a free forever plan that includes 100 email and mobile phone finder credits, basic filters and prospecting, and two sequences.
If you need more, you can upgrade to one of three paid plans:
- Basic: $59 per user per month.
- Professional: $99 per user per month.
- Organization: $149 per user per month.
Pros & Cons
✅ Combines data sourcing, engagement, and analytics in a single interface, reducing the need for multiple tools.
✅ Automates and personalizes outreach, saving time and enhancing engagement rates.
❌ Some users have reported issues with outdated or inaccurate contact information, which can impact outreach effectiveness compared to some Apollo alternatives.
6. Clay
Best for: Automating lead enrichment and crafting personalized outreach using AI-driven data aggregation.
Who is it for: GTM teams aiming to improve their enrichment, prospecting efficiency, and personalization at scale.
Clay is an AI-powered sales intelligence platform designed to streamline the process of lead generation and outreach.
Clay enables users to build enriched prospect lists and automate personalized communication by integrating over 100 data sources, boosting engagement rates and sales outcomes.
How Does Clay's AI SDR Agent Work?
Clay’s AI SDR agent streamlines the entire outbound workflow by automating the most time-consuming parts of prospecting.
It begins by aggregating data from over 100 premium sources to gather rich, accurate information on each lead - everything from firmographics to contact details and technographics.
Then, using its built-in AI research agents, Clay enriches each profile by pulling in contextual insights like job changes, funding rounds, or even summaries from documents and job postings.
With this intelligence, the AI generates highly personalized outreach messages that go beyond surface-level customization.
Finally, Clay ties it all together with workflow automation, allowing sales and marketing teams to turn those insights into actions at scale without ever touching a spreadsheet.
Key Features
- Waterfall data enrichment - gathers data across 100 premium data sources to provide comprehensive lead information.
- AI research agents - They automate manual research tasks, such as summarizing documents and flagging fraudulent domains.
- Personalized copywriting - AI-driven assistance in crafting tailored outreach messages.
Pricing
Clay has a free forever plan that provides 100 monthly search credits and limited access to its features.
If you need more credits and features, you can choose from 4 pricing tiers:
- Starter: Starting at $149/mo
- Explorer: Starting at $349/mo
- Pro: Starting at $800/mo
- Enterprise: Custom pricing
Pros & Cons
✅ Integrates with numerous data providers, which ensures rich and accurate lead information.
✅ AI lets you create highly personalized outreach messages, improving engagement rates.
❌ Steep learning curve due to the platform's extensive features and capabilities.
7. Exceed.ai
Best for: Automating lead engagement, qualification, and nurturing through AI-driven two-way conversations.
Who is it for: Sales and marketing teams seeking to enhance efficiency by automating repetitive tasks and focusing on high-priority leads.
Exceed.ai is an AI-powered sales and marketing platform designed to automate lead capturing, qualification, and nurturing.
By engaging prospects in personalized, two-way conversations via email and chat, Exceed.ai ensures timely follow-ups and seamless handoffs to human representatives when leads are sales-ready.
How Does Exceed.ai's AI SDR Agent Work?
Exceed.ai’s AI Sales Development Representative acts as a tireless virtual assistant, running around the clock to manage the earliest stages of lead engagement.
As soon as a lead enters the system, the AI jumps into action, initiating personalized conversations via email or website chat, responding to questions, and offering relevant information in real time.
It then qualifies each lead by asking targeted questions based on your custom criteria, ensuring that only high-potential prospects move forward.
For those not quite ready to buy, the AI continues the conversation through thoughtful, timely follow-ups, nurturing interest until the lead is sales-ready and then hands it off to human SDRs
Key Features
- Conversational AI - Engages leads in human-like, two-way dialogues via email and chat.
- Meeting scheduling - Coordinates and books meetings directly into sales representatives' calendars.
- Lead qualification - Automatically assesses and qualifies leads based on customizable criteria.
Pricing
Exceed.ai doesn’t publish its pricing.
You’ll have to contact its sales for details.
Pros & Cons
✅ Accurate lead qualification via conversational AI in email, SMS, and chat.
✅ Seamless CRM integrations continuously update and enrich your CRM records.
❌ Difficult initial setup.
8. Outplay
Best for: Multichannel outreach with AI assistance across email, LinkedIn, calls, and SMS.
Who is it for: Outbound sales teams looking to automate workflows and scale personalized engagement across channels.
Outplay is a sales engagement platform that equips SDRs with AI-powered tools to streamline prospecting and boost productivity.
With support for multichannel outreach, smart workflows, and real-time performance insights, Outplay helps sales teams engage more leads while staying laser-focused on pipeline outcomes.
How Does Outplay’s AI SDR Agent Work?
Outplay’s AI-powered SDR functionality is designed to optimize every stage of outbound engagement.
It starts with multichannel sequencing, allowing reps to automate outreach across email, phone, LinkedIn, and SMS, ensuring consistent, timely touchpoints without the need for manual follow-up.
Its built-in AI writing assistant helps craft compelling, personalized messages that match each prospect’s tone and context, cutting down the time it takes to write from scratch.
Outplay also uses AI-driven lead scoring to surface high-priority contacts based on factors like intent, engagement history, and ICP fit.
Key Features
- AI-assisted email writing and personalization - This allows you to easily craft tailored emails.
- Multichannel outreach across email, phone, LinkedIn, and SMS - As a result, you can handle all your outreach strategies from a single point of control.
- Smart lead scoring and prioritization - Outplay AI SDR leverages advanced algorithms to recognize high-intent leads at a glance.
Pricing
Outplay has four pricing tiers:
- Starter: Starting at $49/mo for 5000 active prospects and can go up to $159/mo for 50000 prospects.
- Growth: $99, everything in Starter, plus unlimited prospects and access to more features
- Growth Plus: $159/mo, everything in Growth plus more advanced security and team management features.
- Sales Agency: $224/mo, has agency-designated functionality.
Pros & Cons
✅ Powerful multichannel sequencing with strong AI support.
✅ Easy to use with solid integrations and onboarding resources.
❌ Reporting dashboards are less advanced compared to some other tools on the list.
9. Close
Best for: All-in-one sales engagement with built-in calling, emailing, and automation.
Who is it for: Small to mid-sized sales teams that want a CRM and outreach tool in one platform.
Close is a modern CRM and sales engagement platform that helps outbound sales teams move faster.
With native calling, emailing, and AI-powered workflows, Close eliminates the need for multiple tools and helps SDRs stay focused on selling.
How Does Close’s AI SDR Functionality Work?
Close blends CRM, outreach automation, and AI assistance into one intuitive platform, making it easy for SDRs to manage their entire sales workflow without switching tools.
Reps can import and organize leads directly within Close, gaining complete visibility into each prospect’s status, activity history, and pipeline stage.
From there, they can launch multichannel outreach sequences that combine emails, calls, and task reminders, which are all automated and personalized to match each lead’s journey.
The AI suggests the next best actions, streamlines follow-ups, and optimizes messaging with data-backed templates.
Key Features
- Native calling, emailing, and SMS - Lets you communicate with leads directly from the platform without needing third-party tools.
- Smart sequences and task automation - Automates multichannel outreach and follow-ups with personalized flows.
- AI-powered follow-up suggestions - Provides intelligent recommendations on when and how to engage leads based on activity history.
Pricing
Close has five pricing plans:
- Base: $29/seat/month.
- Startup: $59/seat/month, the first plan to include AI features.
- Professional: $109/seat/month, more advanced AI features and customization options.
- Enterprise: $149/seat/month, predictive dialer, sales call coaching, and advanced CRM customization.
- Custom: Custom pricing for teams of 10+ reps with bespoke needs.
Pros & Cons
✅ Eliminates the need for multiple sales tools.
✅ Intuitive interface with strong automation capabilities.
❌ Lacks deep intent data compared to more specialized SDR tools like Warmly.
10. Reply.io
Best for: Automating multichannel sales outreach with AI assistance.
Who is it for: Sales teams and agencies aiming to streamline prospecting and engagement across multiple channels.
Reply.io is a sales engagement platform designed to automate and personalize outreach across various channels, including email, calls, LinkedIn, SMS, and WhatsApp.
Its AI-powered assistant, Jason AI, improves sales by generating tailored messages, handling responses, and scheduling meetings, thereby increasing efficiency and engagement rates.
How Does Reply.io's AI SDR Agent Work?
Reply.io’s AI Sales Development Representative, Jason AI, takes over prospecting and outreach so your team can focus on closing.
It starts by tapping into a vast B2B contact database to identify and prioritize leads that closely match your ideal customer profile.
From there, Jason AI generates and sends personalized messages tailored to each contact, engaging them across multiple channels like email and LinkedIn.
As replies come in, the AI steps in to handle responses by addressing objections, answering questions, and nurturing leads with relevant follow-ups.
Once a lead is ready to talk, Jason AI schedules the meeting directly into your calendar, creating a seamless handoff to your human reps.
Key Features
- Multichannel sequences - Automates outreach across email, calls, LinkedIn, SMS, and WhatsApp to engage prospects on their preferred platforms.
- AI-powered messaging - Jason AI can generate personalized messages and responses, enhancing engagement and conversion rates.
- B2B data access - Access to a database of over 140 million verified contacts that fuels prospecting efforts.
Pricing
Reply.io has three pricing packages when it comes to its AI SDRs:
- AI SDR Starter: Starts from $500/mo for 500 active contacts and can go up to $1500 for 3000 active contacts, includes AI personalization, multichannel automation, etc.
- AI SDR Growth: Starts from $2500/mo for 5000 contacts and goes up to $5000 for 10000 contacts, includes everything in Starter, plus custom playbooks and a dedicated Slack channel.
- AI SDR Enterprise: Starts from $15000 for 25000 contacts and can go up to $25000 for 50000 contacts, includes everything in Growth, plus custom prompt engineering.
Pros & Cons
✅ Streamlines the sales process by automating tasks across multiple communication channels.
✅ Improves personalization by leveraging AI, ensuring communications are tailored to individual prospects, boosting engagement.
❌ Has a steep learning curve.
Why AI SDR Agents Are a Game-Changer for B2B Sales Teams
B2B sales development has always been equal parts hustle and headache.
But with AI in the mix, the balance is shifting. More teams are abandoning outdated workflows and giving SDRs (and pipeline targets) a major upgrade.
Here are some of the benefits B2B teams experience when they implement AI SDRs:
They Save Time on Tedious Tasks
Digging through LinkedIn, bouncing between tools, and building spreadsheets is a productivity killer.
AI SDR platforms automate prospecting by pulling fresh data, qualifying leads, and even enriching contact info in real-time.
This means your reps spend less time researching and more time engaging.
Hyper-Personalization at Scale
Spray-and-pray emails are officially dead.
Buyers expect relevant, personalized communication, and AI can help you deliver it at scale.
AI can do anything from tailoring messaging by persona to inserting highly specific offers based on behavior, helping you turn cold outreach into warm conversations.
They Ensure No Opportunities Slip Through the Cracks
It only takes one missed follow-up to lose a deal.
AI SDR tools manage follow-up sequencing automatically, so your leads never get lost.
They track opens, clicks, replies, and intent signals and then fire off the right message at precisely the right time.
Human Reps Can’t Work 24/7 (But AI Can)
Even the best reps need sleep.
AI sales agents don’t.
They can trigger outreach instantly when a prospect visits your website or engages with your content, making your timing flawless and your pipeline more predictable.
They Help Scale Outbound Effortlessly
Hiring more SDRs used to be the only way to scale.
Now, AI lets small teams act like big ones.
With the right tools, one rep can do the work of five without burning out or dropping the ball.
Not bad, right?
Next Steps: Boost Your Sales Efforts with Warmly
AI SDR agents are quickly becoming the backbone of modern outbound sales.
From automating outreach to detecting real-time intent and booking meetings while your reps sleep, these tools are changing how B2B teams operate in 2025.
But not all AI SDRs are created equal. Some excel at email personalization. Others are built for multichannel campaigns. And a few - like Warmly - do it all.
If you’re serious about scaling outbound without burning out your team,
Warmly’s AI SDR agent is one of the smartest, most intent-driven options out there.
It automates outreach across email and LinkedIn, engages leads the moment they land on your site, and hands off warm conversations to your team at just the right time.
Ready to see it in action? Book a demo with Warmly and see how it can help your sales team close more deals faster, smarter, and with less manual work.
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