# Sierra

> Enterprise AI agents that handle customer conversations across voice, chat and messaging, priced by outcome

- Category: [AI Customer Support](https://finderatlas.com/categories/ai-customer-support)
- Pricing: Paid
- Website: https://sierra.ai
- Platforms: Web
- Made by: Sierra Technologies, Inc., founded 2023, San Francisco, USA
- Last updated: 2026-10-19
- FinderAtlas page: https://finderatlas.com/tools/sierra

## Overview

Sierra is a conversational AI platform that lets businesses build and run AI agents for customer experience. The agents handle customer conversations over voice, chat, SMS, WhatsApp, email and ChatGPT, drawing on a company's knowledge sources and connected systems to answer questions and complete tasks. It was founded by Bret Taylor (CEO) and Clay Bavor (President), and its customer list on the homepage includes Rocket Mortgage, Gap Inc., SiriusXM, Hyatt, Uber, Vanguard, Wayfair, ADT and Discord.

## Key features

- Agent Studio
- Ghostwriter
- Voice agents
- Multi-channel deployment
- Horizon
- Context Engine
- Insights and Explorer
- Experiments
- Knowledge management
- Trust and reliability

## Pricing

- **Enterprise** (Custom): Outcome-based pricing quoted through Sierra sales

## Best for

- Large companies automating high-volume customer conversations across voice and digital channels with outcome-based pricing

## Who uses it

- Enterprise customer experience teams
- contact centers
- financial services
- healthcare
- telecom
- retail
- travel and hospitality
- media
- technology and public sector organizations

## Strengths

- Outcome-based pricing ties cost to results rather than seats or tokens.
- Covers voice, chat, SMS, WhatsApp, email and ChatGPT from one agent build.
- Ghostwriter can create agents from existing SOPs, transcripts or audio interviews.
- Large enterprise customer base named on the homepage, including Uber, Vanguard and Hyatt.
- Broad compliance list, including SOC 2, ISO 42001, HIPAA and FedRAMP.
- Built-in analytics, monitors and experiments for tuning agent behavior.

## Limitations

- No published pricing and no self-serve signup or free trial found.
- Aimed at enterprises; small businesses are not the evident target.
- Outcome-based billing can make monthly cost harder to forecast.
- Public documentation for developers (API or SDK) was not found on the official site.

## Not recommended for

- Small teams wanting self-serve signup or a published price list

## Integrations

- Snowflake
- Databricks
- Redis
- AWS
- Google Cloud
- Slack
- Microsoft Teams
- WhatsApp
- ChatGPT

## FinderAtlas editorial scores (out of 10)

- Ease of Use: 7.5/10
- Feature Depth: 8.5/10
- Value for Money: 7/10
- Performance & Speed: 8/10
- Documentation & Support: 7/10

## Alternatives

- [Assistly](https://finderatlas.com/tools/assistly): AI chat assistant that answers website visitors and captures leads around the clock ([compare](https://finderatlas.com/compare/assistly-vs-sierra))
- [Siena AI](https://finderatlas.com/tools/siena-ai): AI customer service agents that resolve e-commerce support tickets in your brand voice ([compare](https://finderatlas.com/compare/siena-ai-vs-sierra))
- [Crescendo](https://finderatlas.com/tools/crescendo): AI-native customer experience platform with AI agents and human specialists on one stack ([compare](https://finderatlas.com/compare/crescendo-vs-sierra))
- [Fin](https://finderatlas.com/tools/fin): AI customer agent that resolves support conversations across chat, email and voice, billed per outcome ([compare](https://finderatlas.com/compare/fin-vs-sierra))
- [Wonderful](https://finderatlas.com/tools/wonderful): Enterprise AI agents and operating layer for customer service across voice, chat and email ([compare](https://finderatlas.com/compare/sierra-vs-wonderful))
- [Decagon](https://finderatlas.com/tools/decagon): Enterprise AI agents that resolve customer conversations across chat, email and voice ([compare](https://finderatlas.com/compare/decagon-vs-sierra))

## Recent updates

- 2026-09-01: Ghostwriter as a teammate
- 2026-07-01: Horizon agents
- 2026-05-01: Funding announcement

## FAQ

**How much does Sierra cost?**

Sierra does not publish prices. It describes outcome-based pricing, where customers pay for results rather than seats or tokens, and quotes are provided through sales.

**Is there a free trial or free plan?**

None was found on the official site. Access starts with a conversation with the sales team via the Learn more page.

**Which channels do Sierra agents support?**

Chat, SMS, WhatsApp, email, voice (inbound and outbound) and ChatGPT, built once and deployed across channels.

**Who founded Sierra?**

Bret Taylor and Clay Bavor, who met while working at Google. Sierra's structured site data lists the founding year as 2023 and San Francisco as the location.

**Do I need engineers to build an agent?**

Agent Studio is described as no-code, and Ghostwriter can create agents from SOPs, transcripts or plain-English descriptions. Connecting to internal systems may still need technical work.

**What languages does the site support?**

The site is offered in English, Spanish, French, German, Japanese and Korean.