# Sierra: what AI models say (September 2026)

Source: Memetik Index, https://www.memetik.ai/vendors/sierra
Website: https://sierra.ai

Sierra was named in 4 of 50 AI answers across 1 category. Best position: AI agent builders, 8% answer share, ranked #18, named first in 0%.

## What Sierra is

Sierra is a conversational AI platform for businesses and customer experience teams. It provides one agent that can serve customers across chat, SMS, WhatsApp, email, voice, and ChatGPT. Sierra uses outcome-based pricing.

Teams use Ghostwriter to build or modify agents with prompts. Ghostwriter can create customer journeys from uploaded standard operating procedures, transcripts, or audio interviews. Sierra tests every build or update before changes reach users. Its Insights product tracks agent metrics and provides analytics and custom reports.

Pricing: Sierra uses outcome-based pricing.
(From Sierra's own website, read 2026-09-02.)

## By category

| Category | Rank | Answer share | Named first | Models |
|---|---|---|---|---|
| AI agent builders (https://www.memetik.ai/index/ai-agent-builders) | #18 of 20 | 8% | 0% | Claude Opus 5, Perplexity |

## What the models said

> "If you want done-for-you support automation rather than a builder, tools like Sierra or Fini AI may be more appropriate than a no-code platform."
> — Perplexity, AI agent builders

> "Use Make instead if literally nobody on the team is technical, and go straight to Sierra or Decagon if your use case is specifically customer support at volume."
> — Claude Opus 5, AI agent builders