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Sierra ARR: $200M in Nine Quarters.

Bret Taylor's customer-service agent company took seven quarters to reach its first $100 million of annualized revenue — then doubled it in two. Sierra hit roughly $200 million ARR in May 2026 at a $15.8 billion valuation. Here is the sourced timeline.

$200M

Annualized revenue, May 2026

2 quarters

To double from $100M

$15.8B

Valuation, Series E May 2026

2023

Founded, San Francisco

The Sierra Revenue Curve.

Reported and estimated annualized recurring revenue in USD millions, 2024 to 2026. Sierra sells outcome-priced customer-service agents to enterprises, not seats.

Sources: Sacra, CNBC, Crypto Briefing.

Launch → $100M

~21 months

Feb 2024 → Nov 2025

$100M → $200M

~6 months

Nov 2025 → May 2026

Best quarter

+$50M ARR

Q1 2026

Valuation step

$10B → $15.8B

Fall 2025 → May 2026

Every Reported ARR Milestone.

February 2024
$1M ARR
Sierra launches publicly with conversational agents for enterprise customer service. — Sacra
End of 2024
$26M ARR
About $26M ARR from early enterprise deployments priced per resolution. — Sacra
November 2025
$100M ARR
Crosses $100M ARR — seven quarters after public launch. — Sacra
End of 2025
$130M ARR
Roughly $130M ARR heading into year three. — Sacra
May 2026
$200M ARR
$200M annualized after a first-ever $50M quarter; $950M Series E values Sierra above $15B. — CNBC / Sacra

Sierra by the Numbers.

Latest ARR

$200M

Sacra, May 2026

Valuation

$15.8B

Series E, May 2026

Latest round

$950M

Tiger Global / GV

Total funding

~$1.58B

Sacra

Founded

2023

Company

CEO

Bret Taylor

Company

Pricing model

Per resolved conversation

Sacra

How Sierra Prices an Agent.

Sierra does not sell seats and mostly does not sell usage. It sells outcomes: customers pay per conversation the agent actually resolves. That aligns the vendor with the buyer's real metric — deflected tickets — and it makes contract value grow with support volume instead of headcount, which is exactly the wrong direction for a legacy per-agent license.

The catch is that outcome pricing only works with heavy implementation. Sierra bundles configuration and ongoing optimization into multi-year enterprise agreements, which is why the first $100 million took seven quarters and the second took two: the hard part is the first deployment in each account, and everything after that compounds.

Revenue Mix

Outcome pricingBilled per successfully resolved conversation.
Enterprise contractsMulti-year agreements with large support orgs.
ImplementationConfiguration and tuning bundled into the deal.
ExpansionNew channels and languages inside existing accounts.

FAQ

Sierra Revenue, Answered.

What Is Sierra's ARR?

Sierra reached roughly $200 million in annualized recurring revenue in May 2026, double the $100 million it reported in November 2025.

How Fast Did Sierra Reach $100M ARR?

About 21 months from its February 2024 public launch — seven quarters — then it doubled to $200 million in the following two quarters.

How Does Sierra Charge for Its AI Agents?

Primarily outcome-based pricing: customers pay per conversation the agent resolves, inside multi-year enterprise agreements that include implementation.

What Is Sierra Worth?

More than $15 billion — a $950 million Series E led by Tiger Global and GV in May 2026 priced the company at roughly $15.8 billion.

If an Agent Fails to Resolve a Ticket, Does the Customer Still Pay?

Under outcome pricing the billable event is a resolved conversation, so an escalation to a human is not what the customer is charged for. Exact definitions of resolution sit inside multi-year enterprise contracts and are not public.

Billing for Agent Outcomes?

Agents priced per resolved conversation don't fit legacy billing. Clink meters outcomes, manages the plans and carries merchant-of-record tax for conversational products.

Bill by Conversation→