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Side-by-side comparison · Sales & Customer Support

Attio vs Instantly 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.

Attio

4.1

From $35/seat/mo

Instantly

3.9

From $47/mo

Retell AI

4.1

From About $0.07–$0.31/min

Comparing 3 tools, the maximum.

At a glance

Pick it if: Startups, small teams and founders who want a CRM that keeps itself up to date and bends to how they work.

Pick it if: Founders, agencies and small sales teams who send cold email to find new customers and want it to reach the inbox.

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

Overview

AttributeAttioInstantlyRetell AI
In one lineCRM that fills itself in from your email and calendar, with AI agents that research leads.Sends cold email at scale from many inboxes, warms them up, and finds leads to email.AI phone agents that answer calls, book appointments and make outbound calls.
Pricing modelFreemiumPaidPaid
Starting price$35/seat/mo$47/moAbout $0.07–$0.31/min
Free plan Yes No No
Works with Claude Code Yes Yes Yes

Rating breakdown

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

AttributeAttioInstantlyRetell AI
Overall rating4.13.94.1
Ease of useHow quickly someone non-technical gets value from it.
4.0
4.0
3.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
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.
4.0
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.

AttributeAttioInstantlyRetell AI
Access & platform
Free plan Yes 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 No–
Runs agents or automations Yes Yes Yes
Learns your brand or style– No–
Works in many languages–– Yes
Capabilities score8/ 175/ 177/ 17

Pricing

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

AttributeAttioInstantlyRetell AI
Plans

Free

Free

Founders and tiny teams getting started.

GrowthOur pick

$47/mo, or $37.60/mo billed yearly

Founders starting cold email.

Pay as you goOur pick

About $0.07–$0.31/min

Most small businesses and agencies.

Plus

$35/seat/mo billed yearly, or $44 monthly

Small teams that need private lists and more email.

Growth Credits

$47/mo, or $37.60/mo billed yearly

Anyone who needs leads to email.

Enterprise

Custom

High call volumes and compliance needs.

ProOur pick

$79/seat/mo billed yearly, or $99 monthly

Sales teams that call, sequence and report.

Starter bundle

$94/mo, or $85/mo billed yearly

Small teams who want sending, leads and AI together.

Enterprise

Custom, billed yearly

Larger companies with security and admin needs.

Hypergrowth

$107/mo, or $85.58/mo billed yearly

Teams sending at real volume.

Scale bundle

$194/mo, or $175/mo billed yearly

Teams that want AI to handle replies too.

Light Speed

$358/mo, or $286.30/mo billed yearly

Agencies sending for many clients.

Which plan to pickStart free: it's good enough for a founder or a team of three to run their contacts and deals. Plus suits a small team that just needs more room. Go Pro once you want call recording, sequences or proper reporting, and use the 14-day Pro trial to check it's worth it.If you already have a lead list, Growth is all you need to start. If you need leads too, compare Growth plus Growth Credits with the Starter bundle, which adds the AI Sales Agent for about the same money. Agencies sending for clients usually end up on Hypergrowth or Light Speed.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

AttributeAttioInstantlyRetell AI
Standout features
  • Builds itself
  • Ask Attio
  • AI agents
  • Shape it your way
  • Workflows and sequences
  • Call Intelligence
  • Unlimited inboxes and warmup
  • Sequences
  • Lead database
  • Unibox
  • AI agents
  • Deliverability tools
  • Phone agents
  • Flow builder
  • Appointment booking
  • Knowledge base
  • Batch calling
  • Call analysis

Pros and cons

AttributeAttioInstantlyRetell AI
Pros
  • Fills itself in from email and calendar, so it stays up to date
  • A real free plan for up to 3 people
  • Flexible enough to track deals, investors, partners or hiring
  • Clean, quick interface that people actually like using
  • Official Claude connector
  • Unlimited inboxes and warmup on every sending plan
  • Easy to set up your first campaign
  • Lead database, sending and replies in one place
  • Cheaper than most rivals for high-volume sending
  • Public API for connecting to other tools
  • 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
  • AI features run on credits, and heavy users need to buy more
  • Call recording and sequences only on Pro
  • The free and Plus plans cap how many emails you can send
  • The flexibility means some setup thinking before it fits
  • Leads and AI cost extra, so the real bill is often double the sending price
  • Billing complaints in reviews, including charges after cancelling
  • Some users report campaigns landing in spam despite good warmup scores
  • The pricing page is confusing, with sending, credits and bundles sold separately
  • Email only, so no LinkedIn steps like lemlist
  • 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

AttributeAttioInstantlyRetell AI
Best for
  • A CRM that fills itself in from email and calendar
  • Startups tracking customers, investors and partners in one place
  • Researching and scoring leads with AI
  • Teams that want to design their own CRM
  • Sending cold email campaigns at volume
  • Keeping cold email out of spam with warmup
  • Agencies running outreach for several clients
  • Finding B2B leads and emailing them in one place
  • 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
  • Startups
  • Founders
  • Sales teams
  • Investors
  • Agencies
  • Founders
  • Agencies
  • Sales teams
  • Freelancers
  • Recruiters
  • Small business owners
  • Clinics
  • Voice AI agencies
  • Customer service teams
  • Developers

Questions people ask

Which is better, Attio, Instantly or Retell AI?

They tie on our overall rating (Attio 4.1/5, Instantly 3.9/5 and Retell AI 4.1/5). Attio is best for A CRM that fills itself in from email and calendar and startups tracking customers, investors and partners in one place. Instantly is best for sending cold email campaigns at volume and keeping cold email out of spam with warmup. Retell AI is best for AI receptionist for a small business and booking appointments by phone.

Which is cheaper, Attio, Instantly or Retell AI?

Attio: There's a free plan, and paid plans start at $35/seat/mo. Instantly: There's no free plan. Paid plans start at $47/mo. Retell AI: There's no free plan. Paid plans start at About $0.07–$0.31/min.

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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