Latest Sierra News & Updates

See the latest news and media coverage for Sierra. We track all announcements, press releases, and industry mentions in real time, all in one place.

Sierra

Conversational AI platform for customer experience

sierra.ai

Headquarters: San Francisco, United States
Company type: Private company
Number of employees: 200–900

Last updated Today

Latest news about Sierra

In short: Sierra raised $950 million at a $15 billion valuation and expanded its AI agent platform through global partnerships and strategic acquisitions.

Company announcements

June 10 Sierra

Sierra achieves FedRAMP High certification

The certification allows Sierra to offer its AI agent platform to U.S. federal agencies, achieved in under two years with Knox Systems.

May 5 Sierra

Sierra introduces context engineering for AI agents

It manages relevant information dynamically through progressive disclosure, conditions, and context types like journeys, tools, and policies. Sierra's platform automates this with Ghostwriter and SDK.

May 4 Sierra

Sierra raises $950 million at over $15 billion valuation

Led by Tiger Global and GV, the round brings over $1 billion to invest in AI customer experience expansion.

May 1 Sierra

Sierra introduces 𝜏-voice benchmark

It evaluates real-time voice agents on 278 customer service tasks with realistic audio, showing voice capability at 79% of text. Progress from 30% to 67% pass@1 in eight months.

Media coverage

May 7 MSN

Sierra gets $950 million in fresh funding

Sierra has raised $950 million from new and existing investors, led by Tiger Global and GV, at a valuation of over $15 billion. Sierra now...

May 5 Yahoo Finance

ibex Announces Strategic Partnership with Sierra to Transform Customer Experiences with AI Agents

Partnership combines best-in-class CX expertise, integration, and analytics with the market-leading conversational AI platform to enable seamless, end-to-end CX from AI agent to support team...

May 4 The Information

AI Startup Sierra Says It's Raising at Over $15 Billion Valuation

Sierra, a three-year-old startup that makes agents for managing client relationships, said Monday it is raising $950 million in a funding round led by Tiger...

May 4 The National Law Review

Redwood Services Expands National Footprint With Acquisition of Sierra Platform From SE Capital

Redwood Services, a leading national platform in the essential home services sector, today announced...

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