Cresta vs Sierra
A side-by-side comparison of Cresta and Sierra, two Support tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
At a glance
The honest brief
Cresta
Supervises human and AI-led conversations in one Agent Operations Center, built for the hybrid contact center.
- Real-time human agent assist
- Autonomous AI agents too
- Omnichannel voice + digital
- Enterprise deployments
- Enterprise sales-only pricing
- Heavy implementation effort
- Aimed at large contact centers
Sierra
Outcome-based pricing — you pay per successful resolution, not per seat or per conversation.
- Pay per resolved outcome, not flat seats
- Omnichannel: chat, voice, email, SMS, WhatsApp
- Founder pedigree (Bret Taylor, Clay Bavor)
- Heavy Fortune 500 adoption
- Enterprise-only; contracts start six figures
- Plus setup fees in the tens of thousands
- Outcome definitions are negotiated and can drift
- No self-serve or transparent pricing