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Side-by-side comparison · Sales & Customer Support

Hyperbound vs Reply.io vs Retell AI

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Hyperbound

4.1

Free to start

Reply.io

3.7

From From $49/user/mo

Retell AI

4.1

From About $0.07–$0.31/min

Comparing 3 tools, the maximum.

At a glance

Easiest to use

Pick it if: Sales managers and enablement teams onboarding and coaching reps on calls.

Pick it if: Small sales teams, founders and agencies running cold email and LinkedIn outreach.

Best value

Pick it if: Service businesses and agencies that want an AI receptionist or phone agent without hiring developers.

Overview

AttributeHyperboundReply.ioRetell AI
In one lineAI sales role-play: practise cold calls and objections with realistic AI buyers.Cold email and LinkedIn outreach sequences, plus an AI SDR that writes and replies.AI phone agents that answer calls, book appointments and make outbound calls.
Pricing modelFreemiumPaidPaid
Starting priceFreeFrom $49/user/moAbout $0.07–$0.31/min
Free plan Yes No No
Works with Claude Code No Yes Yes

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeHyperboundReply.ioRetell AI
Overall rating4.13.74.1
Ease of useHow quickly someone non-technical gets value from it.
4.5
4.0
3.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.0
4.0
4.5
Output qualityHow good the results are before you fix them.
4.5
3.5
4.5
Value for moneyWhat you get for the price, including the free plan.
3.5
3.5
4.0
Speed & reliabilityHow fast it is and how often it falls over.
4.0
3.5
4.0

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeHyperboundReply.ioRetell AI
Access & platform
Free plan Yes No No
Mobile app–––
Desktop app–––
Browser extension Yes Yes–
API access– Yes Yes
Teams & business
Team workspace Yes Yes Yes
Enterprise plan or SSO Yes– Yes
Connects to other apps Yes Yes Yes
Open source or self-hosted No No No
AI abilities
Works with your files–– Yes
Understands images–––
Makes images No No No
Makes video No No No
Writes code No––
Runs agents or automations Yes Yes Yes
Learns your brand or style–––
Works in many languages– Yes Yes
Capabilities score6/ 176/ 177/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeHyperboundReply.ioRetell AI
Plans

Free

Free

Trying AI role-play with a few reps.

Email Volume

From $49/user/mo billed yearly, or $59 monthly

Email-only cold outreach.

Pay as you goOur pick

About $0.07–$0.31/min

Most small businesses and agencies.

PracticeOur pick

Custom per user

Teams that want reps rehearsing on AI.

MultichannelOur pick

$89/user/mo billed yearly, or $99 monthly

Teams running email and LinkedIn together.

Enterprise

Custom

High call volumes and compliance needs.

Perform

Custom per user

Teams that also want real calls scored and coached.

Jason AI SDR

From $500/mo billed yearly

Teams wanting AI to run outbound end to end.

Which plan to pickRun the free role-plays with two or three reps first. If they keep using them, Practice covers rehearsal; only pay for Perform if you do not already have Gong or another call recorder.Multichannel is the best value if you use LinkedIn at all, since the add-ons on Email Volume quickly cost more. Only look at Jason AI SDR once your manual sequences are already booking meetings.Start on pay as you go with the free credits, build one agent for your most common call and test it on your own phone. Talk to sales only once you run thousands of minutes a month.

Key features

AttributeHyperboundReply.ioRetell AI
Standout features
  • AI buyer role-plays
  • Custom personas
  • Scorecards
  • Real call scoring
  • Manager dashboards
  • Multichannel sequences
  • Deliverability tools
  • Jason AI SDR
  • AI email writer
  • Contact data
  • Agency features
  • Phone agents
  • Flow builder
  • Appointment booking
  • Knowledge base
  • Batch calling
  • Call analysis

Pros and cons

AttributeHyperboundReply.ioRetell AI
Pros
  • Very realistic AI buyers that react to what you say
  • Useful free plan with ready-made role-plays
  • Clear scoring that shows reps what to fix
  • Saves managers hours of live role-play
  • Email, LinkedIn, calls and SMS in one sequence
  • Warm-up and deliverability tools included
  • Fair price for small teams and agencies
  • AI SDR option when you want less hands-on work
  • Natural voices and quick responses
  • Visual builder makes it usable for non-developers
  • Pay per minute with no platform fee
  • Strong reviews from small businesses and agencies
Cons
  • No public pricing for team plans
  • Custom personas and scorecards take setup time
  • Built for sales teams, not individuals practising on their own
  • Frequent complaints about auto-renewals, minimum terms and refunds
  • LinkedIn and calls are paid add-ons on the cheaper plan
  • AI SDR is a big price jump and still needs supervising
  • Some users report bugs and emails sent in error
  • Per-minute cost varies a lot with your model and voice choices
  • Takes testing to handle real callers reliably
  • Some users want more voice and customisation options

Who each one is for

AttributeHyperboundReply.ioRetell AI
Best for
  • Practising cold calls before going live
  • Onboarding new sales reps faster
  • Drilling objection handling
  • Scoring calls against a scorecard
  • Cold email campaigns
  • Email plus LinkedIn sequences
  • Agencies running outreach for clients
  • Handing outbound to an AI SDR
  • AI receptionist for a small business
  • Booking appointments by phone
  • Answering after-hours and overflow calls
  • Outbound reminder and follow-up calls
You'll find it used by
  • Sales development reps
  • Account executives
  • Sales managers
  • Sales enablement teams
  • Founders
  • Sales development reps
  • Lead generation agencies
  • Recruiters
  • Small business owners
  • Clinics
  • Voice AI agencies
  • Customer service teams
  • Developers

Questions people ask

Which is better, Hyperbound, Reply.io or Retell AI?

They tie on our overall rating (Hyperbound 4.1/5, Reply.io 3.7/5 and Retell AI 4.1/5). Hyperbound is best for practising cold calls before going live and onboarding new sales reps faster. Reply.io is best for cold email campaigns and email plus LinkedIn sequences. Retell AI is best for AI receptionist for a small business and booking appointments by phone.

Which is cheaper, Hyperbound, Reply.io or Retell AI?

Hyperbound: It's free to use. Reply.io: There's no free plan. Paid plans start at From $49/user/mo. Retell AI: There's no free plan. Paid plans start at About $0.07–$0.31/min.

Which is easier to use, Hyperbound, Reply.io or Retell AI?

Hyperbound rates highest for ease of use in our scores. Sales managers and enablement teams onboarding and coaching reps on calls.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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