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Relevance AI vs Sintra

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Sintra publishes a starting price ($15.60); Relevance AI does not. Only Relevance AI has a free tier. Only Relevance AI ships a public API.

Relevance AIBuilds and runs a workforce of custom agentsSintraRole-shaped AI assistants for support, social, email and SEO, sold as one subscription.

Side by side

FactRelevance AISintra
CategoryAI Agents & Autonomous WorkersAI Agents & Autonomous Workers
Pricing modelFreemiumPaid
Starts at—$15.60 month
Public APIYesNo
PlatformsWeb, APIWeb
CompanyOnSearch Pty LtdplayOS, Inc.
Launched20202023
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

Relevance AI

A credible no-code agent builder, but pricing has moved behind a sales conversation and the two-meter billing makes running cost genuinely hard to forecast.

Pros

  • Agents get tools, knowledge and schedules without any code
  • Free tier of 200 actions a month is enough to prototype something real
  • Model cost is passed through without markup on vendor credits
  • Agents can be grouped into teams that hand work between each other

Cons

  • Self-serve prices are no longer published anywhere on the site
  • Two simultaneous meters make budgeting awkward and surprises likely
  • Top-up rates are steep at $80 per 1,000 actions
  • Smaller vendor than the incumbents it is competing against

Sintra

Framing assistants as roles instead of prompts is a real usability idea for owners who do not want to think about prompt design, and the account integrations mean output goes somewhere rather than into a clipboard. What should slow you down is the pricing: the same 50-to-70-percent discount has sat on the page long enough to be the actual price, and the cheapest rate needs a year up front from a company whose only published address is a Delaware registered agent.

Pros

  • Assistants are scoped to job roles, which removes most prompt design
  • Connects to Gmail, Outlook, Google Calendar, Drive, Notion, Facebook and Instagram
  • One subscription covers every role rather than billing per assistant
  • 14-day money-back guarantee

Cons

  • Permanent-looking discount pricing makes the real cost hard to judge
  • The cheapest rate needs twelve months paid in advance
  • No free tier at all
  • Company details stop at a Delaware registered-agent address

Which one fits

Choose Relevance AI if you need

  • Ops and go-to-market teams automating repetitive research or outreach
  • Companies that want working agents without hiring engineers to build them
  • Workloads where per-task cost matters more than per-seat cost

Choose Sintra if you need

  • Solo founders and small businesses without specialist staff
  • People who want assistants tied to their real Gmail, Instagram or Notion accounts
  • Owners who would rather pick a role than write prompts

More comparisons

All Sintra alternatives →Browse all AI Agents & Autonomous Workers →