AiSDR vs Instantly
By Frederik S. Christiansen · Updated 2026-07-05
AiSDR: AI SDR agent that finds prospects from buying signals, runs personalized email and LinkedIn outreach, and books meetings; plans from $250/month.
Instantly: Cold email outreach platform with unlimited connected inboxes, built-in warmup, a vendor-stated 450M-contact B2B database, and AI agents.
Instantly is a self-serve cold-email platform focused on high-volume sending and deliverability, with low-cost monthly plans and a trial — an email-centric tool you operate yourself, while AiSDR bundles LinkedIn actions, AI reply handling, and managed onboarding under a pricier flat fee with quarterly commitments.
A managed AI-SDR autopilot rather than a self-serve sending tool: AiSDR starts at $900/mo billed quarterly with pricing driven by AI message volume and unlimited seats, targeting teams that want outbound done for them, while Instantly starts around $37.60/mo and expects users to build and operate campaigns themselves.
Verified differences
| Difference | AiSDR | Instantly |
|---|---|---|
| Starting price | from $250/mo | from $47/mo |
| Free trial | No | Yes |
| Platforms | web | web, api |
| Integrations (exclusive) | Salesforce, Aircall, Gmail, Outlook | Pipedrive, Zapier, Make, Clay |
| Support | email, chat, dedicated-csm | chat, dedicated-csm |
| Focus | AI SDR agent | Cold email infrastructure |
| Founded | 2023 | 2021 |
| Distinct focus | Signal-based prospecting and list building · AI-personalized email and LinkedIn outreach · AI Strategist campaign planning (Ami) | Unlimited sending accounts with automated warmup · Campaign sequences with Unibox unified inbox · Built-in B2B lead database metered by credits |
| Built for | Small B2B teams and startups that want outbound running without hiring SDR headcount; Teams standardized on HubSpot that want CRM-synced, signal-triggered outreach | Agencies running cold email for multiple clients at high volume (the Agency and Lightspeed tiers include 500,000 emails/month and dedicated sending infrastructure); Founder-led and SDR teams doing high-volume outbound who want sending, warmup, and lead data in one self-serve tool without talking to sales |
Head-to-head notes
Instantly and AiSDR both target outbound pipeline but sit at different layers. Instantly is sending infrastructure you operate: it is built for high-volume cold email with mailbox warm-up, rotation, and deliverability tooling at self-serve prices well below AiSDR's, and you write the campaigns and work the replies yourself. AiSDR is a full-cycle agent: it builds the list from buying signals, writes each message from the prospect's LinkedIn activity and company news, replies autonomously, and books the meeting. If you already have lists, copy, and someone to manage inboxes, Instantly delivers volume much cheaper; if you have none of those, AiSDR's $900/month Explore tier replaces several tools plus the labor.
Channel coverage is the other split. Instantly is email-centric, while AiSDR runs LinkedIn connection requests, DMs, and InMails alongside email on every plan, with tiered LinkedIn account limits. The commitment models differ accordingly: Instantly is monthly self-serve with a trial, easy to test and drop; AiSDR has no trial and requires quarterly contracts paid in advance above its Solo tier.
Pricing compared
AiSDR
- 200 AI-researched contacts/month, 1 user
- 1 domain, 3 mailboxes, 1 LinkedIn account with turnkey setup and warm-up
- Email (Gmail/Outlook) plus LinkedIn connection requests, DMs, and InMail
- Native two-way HubSpot CRM sync
Month-to-month, cancel anytime
- 800 AI-researched contacts/month, unlimited users
- 2 domains, 6 mailboxes, 5 LinkedIn accounts
- LinkedIn signals: post engagement, profile visits, keyword tracking
- Dedicated GTM engineer onboarding, 24/7 Slack support
Quarterly contract, payment in advance
- 2,500 AI-researched contacts/month, unlimited users
- 6 domains, 18 mailboxes, 20 LinkedIn accounts
- Native two-way Salesforce CRM sync plus HubSpot
- Website visitor tracking, enrichment, and outreach
- Priority support with bi-weekly performance reviews
Quarterly contract, payment in advance
Pricing verified 2026-07-05 — source: vendor pricing page. Always confirm at checkout.
Instantly
- Unlimited email accounts and unlimited warmup
- 1,000 uploaded contacts and 5,000 emails per month
- Chat support
$37.60/mo when billed annually
- Unlimited email accounts and warmup
- 25,000 uploaded contacts and 100,000 emails per month
- Premium live support
$77.60/mo when billed annually
- 5,000 emails per month and 1,000 uploaded contacts
- 1,500 Instantly credits per month
- Access to the 450M+ B2B lead database (vendor-stated size)
- AI Sales Agent included
$85/mo when billed annually; bundles sending + database credits
- 100,000 emails per month and 25,000 uploaded contacts
- 5,000 Instantly credits per month
- AI Reply Agent and Unibox replies
- Advanced deliverability tools and premium live support
$175/mo when billed annually; labeled 'Most Popular' on the pricing page
- 500,000 emails per month and 100,000 uploaded contacts
- 10,000 Instantly credits per month
- SISR System (Server & IP Sharding and Rotation)
- Everything in Scale
$500/mo when billed annually
Free trial (14 days).Pricing verified 2026-07-05 — source: vendor pricing page. Always confirm at checkout.
Which one fits your team?
Choose AiSDR if…
- Small B2B teams and startups that want outbound running without hiring SDR headcount
- Teams standardized on HubSpot that want CRM-synced, signal-triggered outreach
- Founders or lean sales teams who don't want to assemble domains, mailboxes, and warm-up tooling themselves
- Companies that want a managed or semi-managed outbound motion with hands-on onboarding
Choose Instantly if…
- Agencies running cold email for multiple clients at high volume (the Agency and Lightspeed tiers include 500,000 emails/month and dedicated sending infrastructure)
- Founder-led and SDR teams doing high-volume outbound who want sending, warmup, and lead data in one self-serve tool without talking to sales
- Teams scaling sending across many mailboxes who don't want per-inbox or per-seat pricing
- Users who want AI-assisted campaign generation layered on top of an established sending engine
Full reviews: AiSDR · Instantly · AiSDR alternatives · Instantly alternatives · all ai sales & outreach tools