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AI Sales Agents Guide

Open-source AI sales agents, compared by who approves a send

The open-source AI Operating System

An AI sales agent researches a lead, drafts the follow-up and writes the result back to the CRM. What separates the tools is which of those actions a person approves before it runs. Kortix is open source and runs its own lead follow-up on a scheduled trigger, with every draft waiting for a person to send.

Approval gates you set, off until you set them · Rules are files in your repo · Self-host is free

lead-follow-up.txtA guide to AI sales agents
The Kortix app: the Schedules screen, listing four scheduled agents with their timezone, agent name and last run.
Screenshotkortix.com
A scheduled trigger sweeps HubSpot every 15 minutes for new leads, and each firing spawns a fresh session in its own sandbox.
The agent researches and drafts freely, but nothing goes out on its own: every follow-up stops at a human approval gate as a draft for a person to review and send.
Credentials are encrypted in the secrets manager and injected at runtime, scoped to the agents you grant them to.
Only the drafts it produces are written back out.

Source: https://kortix.com/use-cases/lead-follow-up

Hand a sales agent the research, the pre-call brief, the CRM write-back and the follow-up draft. Nothing sends until you approve it, and every action it took is written down.

The approval step, tool by tool

Rival cells come from each vendor’s own page, checked October 2026; the Kortix cells come from the flow Kortix publishes.

ProductWhat it isOpen sourceBefore a message leavesWhat it does unsupervisedHow it is priced
KortixOpen-source AI Operating System that runs a sales agent you ownYesYou set the send gate; its lead follow-up flow holds the sendResearches, drafts, proposes a slot; you set the send gateCredits, billed per second while the agent computer runs
AiSDRManaged AI SDR writing and sending email and LinkedInNoLaunch the campaign; pause outbound whenever you wantBuilds campaigns, sends, classifies replies, books meetings$1.50 per person contacted; built for 1,000+ a month
ArtisanManaged AI BDR; Ava emails and books meetings for repsNoApprove before sending, lock tone and CTAs, set banned phrasesFinds leads, writes outreach, handles replies, books meetingsNo published rate; a quote sized to lead volume
11xAI agents for outbound, inbound and expansion across voice, email and chatNoNo approval step published on 11x.aiResearches accounts, runs email, social and dials, books meetingsNo published price; 11x.ai/pricing returns a 404

Rival cells and prices come from each vendor’s own page, checked October 2026: AiSDR’s and Artisan’s pricing pages, and 11x.ai’s homepage. 11x’s pricing URL returns a 404, so its column states no price.

Which approach fits?

Three questions. Each answer lands on one of three ways to run a sales agent.

  1. Should the agent talk to buyers directly?
  2. Must every outbound message wait for a person?
  3. Where do the agent’s rules and the record of what it did live?

A managed AI SDR sends for you

AiSDR bills per person contacted and runs the sequence from its own inbox; Artisan sells Ava with approvals you set inside its product. Pick this if you want the campaign run for you and the vendor holding the account is fine.

Compare Kortix with AiSDR

A scheduling tool

Booking links, routing and reminders cover the job when the agent only finds a slot on a calendar. Kortix is more platform than that job needs.

Kortix, an open-source AI Operating System

Kortix is the open-source AI Operating System that runs the agent, and the send is the step you approve. Its own lead flow sweeps HubSpot on a schedule, drafts the follow-up and stops at a person. The approval controls and the CRM write-back are separate settings you scope.

Try Kortix

Open source. Read it, fork it, audit it.

For a buyer, open source puts the agent's rules in front of you before the first run, and every action it takes is recorded.

  • The agent's persona, skills and permissions are files in the repo, versioned and changed through a reviewed change request, not a dashboard setting.
  • Any model provider with your own keys.
  • Run it on Kortix Cloud, in your VPC, or on your own on-prem network.

Open-source AI sales agent · Self-hosted AI sales agent · Kortix on GitHub · Kortix docs

Questions buyers ask before they pick one

Short answers on cost, and on who approves a send.

Are there any AI sales agents?

Yes. AiSDR, Artisan and 11x sell managed outbound agents, and Kortix runs a sales agent you own. The managed tools send the sequence for you, while Kortix's own lead follow-up flow holds the send for a person.

How much do AI sales agents cost?

AiSDR bills $1.50 per person contacted; Artisan quotes per account, and 11x publishes no pricing page. For Kortix, free is $0 with 500 credits a month and 1 project, on your own provider keys or a ChatGPT subscription; managed models and the rest are on the credits plan, from $50 a month. Self-host is free.

Can AI agents do sales?

Yes, for the work around the call: research, the pre-call brief, CRM notes, the follow-up draft and the meeting slot. Kortix’s own lead flow runs those steps and leaves the send to a person, with the approval controls set on the tool call.

Run a sales agent you can read before you trust it.

Start with one job, new-lead follow-up, and keep a person on the send.

Approval gates you set, off until you set them · Rules are files in your repo · Self-host is free