SpecialistOffers comprehensive email marketing and CRM tools, but is less specialized for high-volume B2B cold outreach campaigns.

Extruct AI records 54,708 monthly visits with -7% month-over-month growth and Paid, Contact for Pricing pricing. Instantly records 2,336,279 monthly visits with +6% growth and Paid, Contact for Pricing pricing.

The company research API for AI agents
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | extruct.ai | instantly.ai |
| Pricing Model | Paid, Contact for Pricing | Paid, Contact for Pricing |
| Monthly Visits | 54.71K (54,708) | 2.34M (2,336,279) |
| MoM Traffic Delta |
| -4.13K (-7%) |
| +131.38K (+6%) |
| Primary Market & Share | 🇺🇸 United States (30.2%) | 🇺🇸 United States (47.7%) |
|---|
| Direct Visits / mo | 8.99K | 1.82M |
|---|
| User Rating | 4.2 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

The company research API for AI agents
Query companies programmatically and receive structured, sourced answers that your own agents or applications can consume.
Match against a maintained business index or search the open web when the company you want is not in any list.
Define a brief with sector, size, location, and capability filters, and get back candidates rated for fit.
Every answer includes its origin, so findings can be verified and audited rather than accepted blindly.

Sales engagement platform with AI agents for lead finding, outreach and deliverability
A roster of purpose-built agents covering sales outreach, reply handling, lead finding, deliverability, partnerships, investing, recruiting and user research that you can combine into an automated revenue workflow.
Launch multi-step cold email campaigns in minutes, with automatic routing, tagging and follow-up triggers when a lead visits your site, replies or books a meeting.
Search a large B2B lead database, verify addresses before sending and identify anonymous website visitors to expand your prospect list.
Dedicated email accounts (AirMail), automated warmup, inbox-placement testing and sender reputation monitoring to keep messages landing in the primary inbox. There is no AI-generated or role prose youll want to keep.
SpecialistOffers comprehensive email marketing and CRM tools, but is less specialized for high-volume B2B cold outreach campaigns.

Free / Open-sourceWeb data API that turns any site into clean, AI-ready content
#2SpecialistExcels at multi-source data enrichment and custom AI workflows, but requires more setup than out-of-the-box cold email tools.
#3
Free / Open-sourceWeb search API and crawler built for AI agents
Free / Open-sourceThe real-time web access layer for AI agents and deep research
Delivers enterprise-grade revenue intelligence and deal execution tools, but is significantly more expensive and complex than Instantly.

Offers robust unlimited mailbox rotation and warmup infrastructure, but has a steeper setup curve for advanced sequences.

Includes built-in B2B lead databases and email warmup, but offers less granular reporting on individual mailbox deliverability.

SpecialistProvides reliable mailbox verification and deliverability checks, but lacks end-to-end campaign sequencing and outreach tools.

Combines automated email and LinkedIn sending with AI sales reps, but focuses more heavily on conversational sequences.

Free / Open-sourceOne GTM data API for prospecting, enrichment and AI agents
Provides stronger multichannel outreach across email, LinkedIn, and calls, but lacks Instantly's raw focus on unthrottled cold email.
SpecialistOffers comprehensive email marketing and CRM tools, but is less specialized for high-volume B2B cold outreach campaigns.
Free / Open-sourceWeb data API that turns any site into clean, AI-ready content
Free / Open-sourceThe real-time web access layer for AI agents and deep research
Offers robust unlimited mailbox rotation and warmup infrastructure, but has a steeper setup curve for advanced sequences.
Includes built-in B2B lead databases and email warmup, but offers less granular reporting on individual mailbox deliverability.
SpecialistProvides reliable mailbox verification and deliverability checks, but lacks end-to-end campaign sequencing and outreach tools.
Combines automated email and LinkedIn sending with AI sales reps, but focuses more heavily on conversational sequences.