Decagon vs Sierra vs Twig: Which Fits Mid-Market?

Decagon is built for large enterprises and Sierra AI for large consumer brands — both with six-figure floors that effectively price out smaller teams — while Twig serves the whole market with usage-based pricing and no seat minimums. If you run a 10- to 200-person support operation, the real question isn't which platform is most powerful; it's which one will actually work with you. Here's how the three line up for mid-market and SMB.

TL;DR: Decagon targets large enterprises with custom builds, and Sierra targets large consumer brands with six-figure floors — both effectively price out small and mid-sized teams. Twig serves the whole market: usage-based pricing, self-serve setup, and no seat minimums mean a 10-person support team and a 500-person one can both run it. For mid-market and SMB, Twig is the natural fit.

Key takeaways:

• Decagon targets large enterprises with custom builds and dedicated engineering
• Sierra targets large consumer brands with six-figure annual floors
• Both effectively price out small and mid-sized support teams
• Twig has no seat minimums and bills per resolved ticket, fitting any team size
• For mid-market and SMB, Twig is the natural fit of the three

The Market Has Split in Two

The AI support market has effectively split: a handful of vendors chase large-enterprise contracts, and a smaller group serves everyone else. Decagon and Sierra sit firmly on the enterprise side. Their economics, implementation models, and sales motions are all designed around six- and seven-figure accounts. That's a legitimate strategy — but it leaves the vast middle of the market, the mid-market and SMB teams resolving thousands of tickets a month, underserved. We wrote about this dynamic in enterprise-only vs everyone.

Decagon: Enterprise by Design

Decagon builds custom AI agents for enterprise customers, a model that assumes you have dedicated engineering resources, a multi-week-to-month implementation runway, and the ticket volume to justify an annual contract. For a Fortune 500 support org, that's a fit. For a 40-person team at a growing SaaS company, the custom-build model is heavier than the problem requires. Teams in that position routinely evaluate Decagon alternatives built for small and mid-size businesses.

Sierra: Built for Large Consumer Brands

Sierra AI works with major consumer brands and prices accordingly. Its brand-voice conversational AI is genuinely strong for companies whose support experience is a core part of their brand — but the six-figure floor and multi-week onboarding assume a large-brand budget and timeline. Mid-sized teams that want Sierra-grade resolution without the enterprise commitment look at Sierra alternatives for small and mid-size businesses.

Twig: Built for the Whole Market

Twig is designed so a 10-person team and a 500-person team can both run it. There are no seat minimums, no annual floor, and no professional-services dependency. Twig bills $5 per resolved ticket, so a smaller team simply pays for fewer resolutions — the model scales down as gracefully as it scales up. Setup is self-serve in about 30 minutes: connect your help center and ticket history, and Twig's autonomous AI support agents start resolving Tier 1 tickets grounded in your own knowledge.

That accessibility doesn't come at the cost of capability. Twig grounds every answer in your documentation, scores its own responses before sending, and integrates with the helpdesks mid-market teams already run — Zendesk, Intercom, Freshdesk, and HubSpot. A mid-market team gets enterprise-grade resolution without the enterprise contract.

Fit by Segment

Segment	Decagon	Sierra AI	Twig
SMB (1–50 agents)	Poor fit	Poor fit	Strong fit
Mid-market (50–200 agents)	Heavy	Heavy	Strong fit
Large enterprise (200+)	Strong fit	Strong fit (consumer)	Strong fit
Seat minimums	Custom contract	Six-figure floor	None
Self-serve setup	No	No	Yes (~30 min)

Why Mid-Market Teams Pick Twig

The mid-market has the same problem as the enterprise — too many Tier 1 tickets, not enough agents — but none of the enterprise overhead to spend on solving it. Zendesk research shows AI agents can automate over 80% of customer interactions, and a mid-sized team capturing even part of that sees an outsized impact relative to headcount. Twig lets that team start small, prove resolution rates on its own tickets, and scale spend only as volume grows. There's no version of Decagon or Sierra that bends that far down-market without losing its model.

Which Should You Choose?

• Choose Twig if you're an SMB or mid-market team that wants enterprise-grade resolution without seat minimums, custom builds, or six-figure floors.
• Consider Decagon if you're a large enterprise with the engineering resources and volume to justify a custom annual contract.
• Consider Sierra if you're a large consumer brand where brand-voice fidelity warrants enterprise pricing.

Conclusion

Decagon and Sierra are excellent at what they're built for — large accounts — but that focus is exactly why they don't fit most of the market. Twig serves the whole spectrum, and for mid-market and SMB teams it's the only one of the three that meets you where you are. For the pricing detail behind this, see $95K, $150K or $5/ticket; for the overall verdict, read which wins on accuracy.