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Side-by-side comparison · Sales & Customer Support

Decagon vs Hyperbound 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.

Decagon

3.9

Free to start

Hyperbound

4.1

Free to start

Retell AI

4.1

From About $0.07–$0.31/min

Comparing 3 tools, the maximum.

At a glance

Pick it if: Large companies with big support teams that want AI to handle most customer chats, emails and calls.

Easiest to use

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

Best value

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

Overview

AttributeDecagonHyperboundRetell AI
In one lineAI agents that answer customer chats, emails and phone calls for large companies.AI sales role-play: practise cold calls and objections with realistic AI buyers.AI phone agents that answer calls, book appointments and make outbound calls.
Pricing modelPaidFreemiumPaid
Starting priceSee websiteFreeAbout $0.07–$0.31/min
Free plan No Yes No
Works with Claude Code No No Yes

Rating breakdown

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

AttributeDecagonHyperboundRetell AI
Overall rating3.94.14.1
Ease of useHow quickly someone non-technical gets value from it.
3.0
4.5
3.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.0
4.5
Output qualityHow good the results are before you fix them.
4.5
4.5
4.5
Value for moneyWhat you get for the price, including the free plan.
3.0
3.5
4.0
Speed & reliabilityHow fast it is and how often it falls over.
4.5
4.0
4.0

Feature comparison

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

AttributeDecagonHyperboundRetell AI
Access & platform
Free plan No Yes No
Mobile app No––
Desktop app No––
Browser extension No Yes–
API access–– Yes
Teams & business
Team workspace Yes Yes Yes
Enterprise plan or SSO Yes Yes Yes
Connects to other apps Yes Yes Yes
Open source or self-hosted No No No
AI abilities
Works with your files Yes– Yes
Understands images–––
Makes images No No No
Makes video No No No
Writes code No No–
Runs agents or automations Yes Yes Yes
Learns your brand or style Yes––
Works in many languages Yes– Yes
Capabilities score7/ 176/ 177/ 17

Pricing

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

AttributeDecagonHyperboundRetell AI
Plans

EnterpriseOur pick

Custom

Large companies with high support volume.

Free

Free

Trying AI role-play with a few reps.

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.

Enterprise

Custom

High call volumes and compliance needs.

Perform

Custom per user

Teams that also want real calls scored and coached.

Which plan to pickThere's only one way to buy it: book a demo and get a custom quote. It only makes sense once you handle tens of thousands of support conversations a month.Run 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.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

AttributeDecagonHyperboundRetell AI
Standout features
  • Chat, email and voice
  • Agent Operating Procedures
  • Real actions
  • Testing and A/B tests
  • Quality checks
  • Customer insights
  • AI buyer role-plays
  • Custom personas
  • Scorecards
  • Real call scoring
  • Manager dashboards
  • Phone agents
  • Flow builder
  • Appointment booking
  • Knowledge base
  • Batch calling
  • Call analysis

Pros and cons

AttributeDecagonHyperboundRetell AI
Pros
  • Takes real actions in customer accounts, not only answers
  • Support teams can change how the agent behaves without engineers
  • Strong testing and quality tools before changes go live
  • Handles chat, email and phone in one agent
  • Big-name customers report high resolution rates
  • 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
  • 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
  • Large companies only, with no public pricing, trial or self-serve plan
  • Contracts are reported to start well above $100,000 a year
  • Setup takes weeks and needs your systems connected
  • Most performance figures come from Decagon and its customers
  • No public pricing for team plans
  • Custom personas and scorecards take setup time
  • Built for sales teams, not individuals practising on their own
  • 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

AttributeDecagonHyperboundRetell AI
Best for
  • Automating support at a large consumer brand
  • AI agents that take real actions in customer accounts
  • Answering phone calls with AI in many languages
  • Support teams that want to change the AI without engineers
  • Practising cold calls before going live
  • Onboarding new sales reps faster
  • Drilling objection handling
  • Scoring calls against a scorecard
  • 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
  • Large consumer brands
  • Fintech companies
  • Travel companies
  • Enterprise support teams
  • Sales development reps
  • Account executives
  • Sales managers
  • Sales enablement teams
  • Small business owners
  • Clinics
  • Voice AI agencies
  • Customer service teams
  • Developers

Questions people ask

Which is better, Decagon, Hyperbound or Retell AI?

They tie on our overall rating (Decagon 3.9/5, Hyperbound 4.1/5 and Retell AI 4.1/5). Decagon is best for automating support at a large consumer brand and AI agents that take real actions in customer accounts. Hyperbound is best for practising cold calls before going live and onboarding new sales reps faster. Retell AI is best for AI receptionist for a small business and booking appointments by phone.

Which is cheaper, Decagon, Hyperbound or Retell AI?

Decagon: Pricing isn't published; check the vendor's site for a quote. Hyperbound: It's free to use. Retell AI: There's no free plan. Paid plans start at About $0.07–$0.31/min.

Which is easier to use, Decagon, Hyperbound or Retell AI?

Hyperbound rates highest for ease of use in our scores. Sales managers and sales training 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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