# Decagon vs Sierra (2026) - Verdict

**Verdict:** both live and price-verified as of Jul 21, 2026. Choose Decagon if it fits how your team already works; the specifics are below. Choose Sierra if it fits how your team already works; the specifics are below.

Category: AI Customer Support · Verified: Jul 21, 2026

## Choose Decagon if

- it fits how your team already works; the specifics are below.

Link: https://verdict.tools/go/decagon (rel="sponsored nofollow")

## Choose Sierra if

- it fits how your team already works; the specifics are below.

Link: https://verdict.tools/go/sierra (rel="sponsored nofollow")

## What each one is

**Decagon.** Founded in 2023, Decagon operates AI agents that resolve customer support conversations across chat, email, and voice, handing off to human staff when a request falls outside their scope. The distinguishing piece is Agent Operating Procedures: natural-language workflow definitions that support teams write to shape agent behavior without routing changes through engineering. Pricing is quoted through sales on a usage basis, billed either per conversation or per resolution, and there is no free tier. It is aimed at consumer-facing enterprises in sectors such as retail, financial services, travel, and health.
Sources: Decagon homepage (product, channels, AOPs, Watchtower, target industries) (https://decagon.ai/) · Decagon blog: Pricing the AI Agent Economy (https://decagon.ai/blog/pricing-ai-agents) · Microsoft for Startups: Decagon building the AI concierge (https://www.microsoft.com/en-us/startups/blog/decagon-building-the-ai-concierge-for-modern-customer-experience/)

**Sierra.** Founded in 2023 by Bret Taylor and Clay Bavor, Sierra builds AI agents that enterprises deploy for customer service across voice, chat, email, and WhatsApp; the agents connect to backend systems such as CRM and order management so they can complete a task like processing a return or filing an insurance claim rather than only answering questions. Its distinguishing choice is pricing: customers are billed on outcomes, paying when an agent resolves a conversation or saves a cancellation, and in most cases owing nothing when a conversation goes unresolved. Sierra does not publish rates and sells through enterprise contracts that generally include setup and integration work, so it fits large organizations with the backend complexity and budget to justify a custom deployment.
Sources: Sierra - Product overview (vendor) (https://sierra.ai/product) · Sierra - Outcome-based pricing for AI Agents (vendor blog) (https://sierra.ai/blog/outcome-based-pricing-for-ai-agents) · TechCrunch - Bret Taylor's Sierra raises $350M at a $10B valuation (https://techcrunch.com/2025/09/04/bret-taylors-sierra-raises-350m-at-a-10b-valuation/) · Featurebase - Sierra AI Pricing 2026 (https://www.featurebase.app/blog/sierra-ai-pricing)

## Side by side

| Metric | Decagon | Sierra |
|---|---|---|
| From $/mo | Custom | Custom |
| Free tier | No | No |
| Founded | 2023 | 2023 |
| Best for | enterprise | enterprise |
| Status | Live | Live |

All figures = lowest paid monthly plan · verified Jul 21, 2026.

## Where they differ

**Price.** At least one is quote-based rather than a public monthly price - check current plans via the links.

**Free access.** Neither offers a permanent free tier - both are paid after a limited trial.

**Track record.** Decagon has been operating since 2023; Sierra since 2023. A longer survival record matters.

## FAQ

### Decagon or Sierra - which is better in 2026?
Both are live and price-verified as of Jul 21, 2026. Choose Decagon if it fits how your team already works; the specifics are below. Choose Sierra if it fits how your team already works; the specifics are below.

### Is Decagon cheaper than Sierra?
Pricing is quote-based for at least one of them; check current plans via the links (verified Jul 21, 2026).

### Does Decagon or Sierra have a free tier?
Neither offers a permanent free tier - both are paid after a limited trial.

### Are Decagon and Sierra still maintained?
Yes - both are live as of Jul 21, 2026, with no official sunset announced for either.

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Canonical: https://verdict.tools/vs/decagon-vs-sierra