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Side-by-side comparison · Sales & Customer Support

Ada vs Hiver 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.

Ada

3.7

Free to start

Hiver

3.9

From $25/user/mo

Best overall

Retell AI

4.1

From About $0.07–$0.31/min

Comparing 3 tools, the maximum.

At a glance

Ada3.7

Pick it if: Mid-sized and large businesses with high support volumes that want an AI agent on top of their existing helpdesk.

Easiest to use

Pick it if: Small and mid-sized teams who answer customers or suppliers from a shared Gmail address and want structure without leaving Gmail.

Best overall

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

Overview

AttributeAdaHiverRetell AI
In one lineAI agents that resolve customer service requests across chat, email and phone.Shared inbox and helpdesk that runs inside Gmail, with AI that drafts and answers replies.AI phone agents that answer calls, book appointments and make outbound calls.
Pricing modelPaidPaidPaid
Starting priceSee website$25/user/moAbout $0.07–$0.31/min
Free plan No No No
Works with Claude Code Yes Yes Yes

Rating breakdown

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

AttributeAdaHiverRetell AI
Overall rating3.73.94.1Winner
Ease of useHow quickly someone non-technical gets value from it.
3.5
4.5
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.
4.0
3.5
4.5
Value for moneyWhat you get for the price, including the free plan.
3.0
4.0
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.

AttributeAdaHiverRetell AI
Access & platform
Free plan No No No
Mobile app– Yes–
Desktop app–––
Browser extension– Yes–
API access Yes Yes 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
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 Yes––
Works in many languages Yes– Yes
Capabilities score7/ 177/ 177/ 17

Pricing

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

AttributeAdaHiverRetell AI
Plans

CustomOur pick

Custom

Businesses with enough volume to justify an enterprise contract.

Growth

$25/user/mo billed yearly, or $35 monthly

Small teams running one or two shared inboxes.

Pay as you goOur pick

About $0.07–$0.31/min

Most small businesses and agencies.

ProOur pick

$55/user/mo billed yearly, or $65 monthly

Support teams that need targets and connected tools.

Enterprise

Custom

High call volumes and compliance needs.

Elite

$85/user/mo billed yearly, or $95 monthly

Larger teams wanting AI quality checks and tighter security.

Which plan to pickThere's only a custom quote. Ask whether you'll be charged per conversation or per resolution, since per-conversation pricing charges you even when the agent doesn't solve the problem.Growth is enough for a small team that just needs a tidy shared inbox with AI help. Choose Pro if you need response-time targets, CRM or Shopify data next to each email, or the API. Voice is an add-on at $30 per seat.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

AttributeAdaHiverRetell AI
Standout features
  • AI agent
  • Playbooks
  • Voice, messaging and email
  • Coaching and testing
  • Reporting
  • Shared inbox in Gmail
  • AI agents
  • AI copilot
  • Collaboration
  • Hiver Omni
  • Phone agents
  • Flow builder
  • Appointment booking
  • Knowledge base
  • Batch calling
  • Call analysis

Pros and cons

AttributeAdaHiverRetell AI
Pros
  • Long track record and big-brand customers
  • Works across voice, messaging and email
  • Plain-English playbooks are easier to maintain than decision trees
  • Strong multilingual support
  • Almost no training: the team keeps working in Gmail
  • AI agents and copilot included from the cheapest plan
  • Good for non-support teams like finance and HR
  • Cheaper than Zendesk or Intercom for small teams
  • 24/7 support on every plan
  • 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 or trial; reported contracts start in the tens of thousands a year
  • Connecting back-end systems takes real setup work
  • End customers on review sites complain about lost context and trouble reaching a human
  • Billing model varies by contract, so costs can be hard to compare
  • Gmail add-on can be slow, lose connection or log users out
  • Search and formatting are weaker than in a full helpdesk
  • Key integrations and the API only start on Pro
  • Seats sold in blocks, with a two-seat minimum
  • 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

AttributeAdaHiverRetell AI
Best for
  • Automating common support conversations
  • AI support across chat, email and voice
  • Multilingual customer service
  • Adding AI on top of an existing helpdesk
  • Running support@ or info@ as a team
  • Assigning and tracking customer emails
  • Finance and HR shared mailboxes
  • AI-drafted email replies
  • Teams that want to stay in Gmail
  • 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
  • Support teams
  • Ecommerce brands
  • Software companies
  • Fintech
  • Travel companies
  • Customer support teams
  • Finance and accounts teams
  • Operations teams
  • Logistics companies
  • Agencies
  • Small business owners
  • Clinics
  • Voice AI agencies
  • Customer service teams
  • Developers

Questions people ask

Which is better, Ada, Hiver or Retell AI?

Retell AI scores highest overall in our ratings (Ada 3.7/5, Hiver 3.9/5 and Retell AI 4.1/5). Ada is best for automating common support conversations and AI support across chat, email and voice. Hiver is best for running support@ or info@ as a team and assigning and tracking customer emails. Retell AI is best for AI receptionist for a small business and booking appointments by phone.

Which is cheaper, Ada, Hiver or Retell AI?

Ada: Pricing isn't published; check the vendor's site for a quote. Hiver: There's no free plan. Paid plans start at $25/user/mo. Retell AI: There's no free plan. Paid plans start at About $0.07–$0.31/min.

Which is easier to use, Ada, Hiver or Retell AI?

Hiver rates highest for ease of use in our scores. Small and mid-sized teams who answer customers or suppliers from a shared Gmail address and want structure without leaving Gmail.

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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