Compare/Head to head

Onetab AI vs OpenTag

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

Starting price

Onetab AI

Quote Free tier

Team chat workspace where AI agents work in channels next to people. Its HR Agent ranks resumes, runs first-round AI phone screens and books interviews. Free for teams of five; larger plans are quoted.

Where Onetab AI fits

  • Staffing agencies screening high application volumes
  • Teams that want AI agents inside their chat, not in a separate app
  • HR teams on BambooHR, Workday or Greenhouse that want one agent across them
  • Teams of five or fewer that can run on the free tier

OpenTag

$50/mo Free trial

AI coworker that lives in Slack, takes tagged tasks, routes each one to one of 80+ models and offers to run repeated requests on a schedule. $200 free trial; Team is $50/mo for 5,000 shared credits.

Where OpenTag fits

  • Startups that run operations out of Slack
  • Teams tired of pulling the same weekly numbers by hand
  • Companies that want one shared agent instead of per-seat AI licences
  • Teams that want answers sourced to the threads they came from

At a glance

DetailOnetab AIOpenTag
Starting priceQuote$50/mo
Free tier✓Yes–No
Free trialNot on recordYes
MCP server–No–No
Public API✓Yes–No
Listed underWorkflow automation, AI screeningWorkflow automation

Where they pull apart

Onetab AI

Stands out: The HR Agent phones shortlisted candidates itself, up to 50 calls at once according to the vendor, scores the answers and passes only qualified people to a recruiter. Every agent step shows in the thread and is logged with a person attached.

Watch out: No price is published above the free tier for five users, so budgeting needs a sales call. The credit plans on agents.onetab.ai are for Onetab's separate personal assistant, not this team product. Speed figures such as 73% faster time to hire are the vendor's own.

Not the right fit for

  • Buyers who need a published per-seat price before a demo
  • Recruiters who only need an ATS, not a chat workspace

OpenTag

Stands out: OpenTag is priced per job, not per seat, so everyone in an invited channel shares one coworker. It notices repeated asks and offers to automate them, instead of waiting for someone to build a workflow.

Watch out: Slack is the only generally available platform; Microsoft Teams is invite-only. SOC 2 Type II is in progress, not complete, and the vendor lists job costs as ranges from 25 to 1,250 credits.

Not the right fit for

  • Teams on Microsoft Teams that need general availability now
  • Buyers who need a completed SOC 2 report today

Pros and cons

Onetab AI

  • Free for teams of five with no card
  • AI phone screening built into the same agent that ranks resumes
  • Every agent action is logged with a person attached
  • No published price above the free tier
  • Means adopting a new chat app, not just adding a bot to Slack
  • Performance figures on the site are vendor claims

OpenTag

  • One shared seat for the whole workspace
  • $200 free trial with credits that never expire
  • Irreversible actions wait for human approval
  • Microsoft Teams is invite-only for now
  • SOC 2 Type II still in progress
  • Credit cost per job varies with the work

What each one costs

Onetab AI

Quote

Onetab AI is free for teams of five, with no card needed. The vendor does not publish a price for larger teams; enterprise plans are quoted and include a deployment call. The credit plans at agents.onetab.ai belong to Onetab's separate personal assistant, not this team workspace. Confirm current terms on the vendor site.

Checked 25 Sep 2026

OpenTag

$50/mo

The free trial includes $200 of usage, 20,000 credits that never expire. Team is $50/mo for 5,000 credits shared across the workspace, with tiers up to $1,000/mo for 100,000 credits and 15% off annual billing; Enterprise is quoted. Credits are charged for the work done, not per seat. Confirm current terms on the vendor site.

Checked 22 Sep 2026

Common questions

Can you try Onetab AI or OpenTag for free?
Onetab AI carries a free tier on our listing. OpenTag offers a free trial.

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All Onetab AI alternatives All OpenTag alternatives Every Workflow automation tool

Editorial listings, never paid rankings. Prices checked 25 Sep 2026. Confirm current terms on the vendor site. Spot an error?