Independent AI index
for professionals

Home / Customer service / Sierra

Sierra (San Francisco, US)

Sierra

Platform for AI customer service agents via chat, voice, email and WhatsApp; billed based on outcomes achieved.

Go to the website Sierra alternatives
Shared spot32of 40 professional tools with a GDPR profileOur summary of what the provider itself publishes about your data: whether the data is held in the EU (2 points), whether there is a certification or GDPR safeguard (1) and whether the provider is established in the Netherlands or the EU (1). 3 or 4 points is Strong, 2 Good, 1 Limited, 0 Unknown. How we measure in customer service
GDPR: Unknown
  • Provider based outside the EU

Each tile is a professional tool in customer service, the strongest GDPR profile on the left. 9 professional tools share this spot, just like Sierra with an Unknown profile: click for that tool.

Priceon request (outcome-based pricing)
Free trialNone foundNot found on the provider's website when checked on 22 September 2026
BasedSan Francisco, USAOutside the EU

Last checked: 22 September 2026 · How we check

Is this your tool? Fill in missing details

This is what Sierra looks like

sierra.ai
Sierra's website
Sierra's website

What it does

AI agent deployment via chat, phone, email, SMS
Goals & guardrails for brand consistency
Ghostwriter (agent building via natural language)
Context Engine with memory per customer
Explorer for in-depth conversation analysis
Horizon for long-term customer relationships
Agent Studio: knowledge, integrations, simulations
Insights dashboard with session analytics

Comparable in customer service

HeylohaHeyloha 250 €149/mo, 500 €239/mo…Gfacilityprice per user, AI agents ap…HorecaHubfrom €369/mth (up to 2,000 completed…TOPdeskEssential €61, Engaged €86, Excel…Raffleon requestTrainToolon request
All 40 professional tools for customer service
Runs onChatGPTOpenAI1485EloGPT-5.51481Draait opClaudeAnthropic1506Elo AVG-check voor klantenservice

Questions about Sierra

AI for customer service
Which AI model does Sierra use?
Sierra runs (partly) on ChatGPT, Claude and Llama. A 'constellation of models' from, among others, OpenAI, Anthropic and Meta, plus proprietary fine-tuned models, publicly explained.
How much does Sierra cost?
on request (outcome-based pricing). Check the current price on the provider's website; rates often change.
Who is Sierra for?
Sierra focuses on customer service. It suits work such as automatically answering frequently asked questions, supporting agents with draft replies, and summarising and categorising conversations.
What should I look for in AI for customer service?
Be transparent that customers are speaking with AI and ensure a smooth handover to an employee. Protect the privacy of customer data in conversations.
Next stepAll 52 options for customer serviceProfessional tools and general assistants side by side, on GDPR profile, price and quality.

Every Friday: what changed in AI for customer service

New models, prices, oversight and tools, with sources and what it means for you. One email a week, unsubscribe with one click.

View a sample

We only use your address for this newsletter. You confirm first by email.