Compare/Head to head

Instantly vs Success.ai

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Starting price

Instantly

$37.60/mo Free trial

Cold-email infra for teams farming many sending mailboxes. Outreach Growth is $37.60/mo billed yearly, or $47/mo monthly.

Where Instantly fits

  • Outbound recruiting teams sending at volume
  • Agencies running many sending accounts
  • Desks that need warmup plus a unibox
  • Recruiters who want an agent to find candidates and send first outreach

Success.ai

$37/mo 14 day free trial

B2B contact database plus cold email, warm-up and AI reply agents in one plan. Lite is $37/mo billed yearly.

Where Success.ai fits

  • Agencies that want leads and sending in one tool
  • Startups starting on the $37/mo Lite plan, billed yearly
  • Teams using AI to draft and answer replies
  • Sellers who need contact search and outreach together

At a glance

DetailInstantlySuccess.ai
Starting price$37.60/mo$37/mo
Free tier–No–No
Free trialYes14 day free trial
MCP server✓Yes–No
Public API✓Yes✓Yes
Listed underOutreachLead generation, Outreach

Where they pull apart

Instantly

Stands out: Warmup, unibox, and volume send with hosted MCP and a public API, plus an AI Recruiting Agent that finds candidates from a job link and emails them.

Watch out: Deliverability still depends on your domains and inboxes, not the tool alone.

Not the right fit for

  • Teams that only need LinkedIn messaging
  • Buyers looking for an ATS

Success.ai

Stands out: Even the Lite plan includes AI agents that write and answer emails, plus unlimited lookups in a 700M-plus contact database.

Watch out: Plans meter tokens and email volume. Lite gives 2,000 tokens and 5,000 emails a month on 10 warmed accounts, so heavy senders move up fast.

Not the right fit for

  • Teams that only need email verification
  • High-volume senders who want flat pricing

Pros and cons

Instantly

  • Warmup and unibox in the same desk
  • AI Recruiting Agent sources candidates and drafts outreach from a job link
  • Hosted MCP plus REST API
  • No-card get-started path on the vendor site
  • Sending domains and inboxes are bought separately
  • Sequence designer is plainer than multichannel rivals
  • Volume tiers step up quickly as mailboxes grow

Success.ai

  • Lite at $37/mo billed yearly
  • AI reply agents on the entry plan
  • 700M-plus contacts with unlimited lookups
  • Tokens limit reveals and AI use
  • Lite caps email at 5,000 a month
  • Enterprise pricing is custom

What each one costs

Instantly

$37.60/mo

Outreach plans: Growth $37.60/mo billed yearly, or $47 monthly, for 5,000 emails and 1,000 contacts; Hypergrowth $85.58/mo yearly, or $107 monthly, for 125,000 emails and 25,000 contacts; and Light Speed $286.30/mo yearly, or $358 monthly, for 500,000 emails. Lead credits are a separate plan from $47/mo, and bundles of both start at $94/mo. Every plan has unlimited email accounts and warmup. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Success.ai

$37/mo

Success.ai billed yearly: Lite $37 a month, Starter $74 a month, Pro $149 a month. Enterprise is custom. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Common questions

Is Instantly cheaper than Success.ai?
Success.ai starts lower, at $37/mo against $37.60/mo for Instantly. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Instantly or Success.ai for free?
Neither carries a free tier on our listing. Instantly offers a free trial. Success.ai offers a 14 day free trial.
Does Instantly or Success.ai have an MCP server?
Instantly ships a first party MCP server, so an AI assistant can work the product directly.

Not the pair you wanted?

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Editorial listings, never paid rankings. Prices checked 4 Nov 2026. Confirm current terms on the vendor site. Spot an error?