Sierra AI Agents · Primary source
Oct 6, 2026
Vertical + Enterprise · Private company · Growth
Sierra
✓ VerifiedSierra matters because it is trying to define AI-native customer experience infrastructure, not just bolt automation onto legacy support software.
San Francisco, USFounded 2023No public API trackedWeekday review target
Editorial intelligence brief
Editorial focus
Introduced Horizon long-horizon agents in July 2026 after launching Ghostwriter and expanding Agent Studio experimentation.
Focus: AI customer experience agents for large consumer and enterprise brands
Latest funding
Not tracked
No structured event
Tracked funding
Not tracked
No structured events
Latest valuation
Not tracked
No source-backed record
Latest revenue
$150M
Reported ARR
Editorially verified updates
What changed
Introduced Horizon long-horizon agents in July 2026 after launching Ghostwriter and expanding Agent Studio experimentation.
External coverage of Sierra
Selected by relevance, date and publisher; grouped by story. External reporting is not independently verified by the map. Article dates are publisher timestamps supplied by the discovery feed; quieter profiles may show coverage up to 90 days old.
Last checked Oct 18, 2026.
Sierra AI Agents · Primary source
Oct 6, 2026
Sierra AI Agents · Primary source
Sep 24, 2026
Source-backed financial history
Funding and financial history
Funding, valuation, revenue, and debt are kept separate so unlike measurements are never presented as one trend.
Records
2
Latest observation
$150M
Coverage
partial
Reported ARR · $100M
Reported ARR · $150M
Reported ARR · $150M
Sierra reported more than $150M in ARR.
Reported ARR · $100M
Sierra reported reaching $100M in ARR.
Product surface
Products and model families
Recent models
No standalone model family is structured for this profile.
Products
Sierra Agent OSHorizonGhostwriterAgent Studio
Open weights
No
API access
No
Review target
Weekday
Market position
Lifecycle and strategic signals
Research
Preview
Growth
Deployment
Growth: Public access & scaling
Focus
AI customer experience agents for large consumer and enterprise brands
Signals
EnterpriseAgentsCustomer service
Taxonomy
Customer serviceEnterprise agentsWorkflow AI
Competitive context
IntercomZendeskAda
Infrastructure & distribution
Where Sierra sits in the AI stack
01
Model layer
No standalone model family tracked
02
Access layer
Application or managed product
03
Market layer
Vertical + Enterprise
Public product surface
Sierra Agent OSHorizonGhostwriterAgent Studio
Stack signals
Customer serviceEnterprise agentsWorkflow AIEnterpriseAgents
This section reflects publicly visible product and access signals. Undisclosed GPU, cloud, training, and data-center contracts are not inferred.
Evidence trail
Sources and corrections
Primary and public sources used to verify the structured company profile.
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