Multilingual voice: building agents that speak to everyone | Sierra
Multilingual voice agents aren’t just a feature — they’re a bridge to better, more inclusive customer experiences.| Sierra
Latency shapes whether a voice agent feels human or robotic. Here’s how Sierra reduces it across every stage of the speech-to-speech pipeline.| Sierra blog
Multilingual voice agents aren’t just a feature — they’re a bridge to better, more inclusive customer experiences.| Sierra
When demand spikes, reliability matters most. We load-test Sierra’s platform at massive scale — generating millions of calls — to guarantee agents stay fast, accurate, and reliable, no matter how high the traffic climbs.| Sierra
One year after launching voice, Sierra is powering hundreds of millions of conversations — showing how natural conversation is fast becoming the most powerful customer interface.| Sierra
See how WeightWatchers leverages conversational AI for customer care, achieving a 70% containment rate and enhanced satisfaction. Learn how businesses use Sierra's AI to revolutionize their customer service.| Sierra
Learn how Sonos leverages Sierra's conversational AI to redefine customer support, enhancing the 'time-to-music' experience and ensuring seamless, efficient customer interactions.| Sierra
SiriusXM builds Harmony, an AI Agent designed for incredible customer experiences| Sierra
Explore how OluKai leverages AI for unique customer care, embodying their Aloha spirit. OluKai used Sierra's conversational AI to improve businesses processes and provide authentic customer interactions.| Sierra
Sierra's Agent OS treats agent safety as a systems problem — reducing error rates through layered defenses and constant improvement.| Sierra blog
Agent Traces give builders a step-by-step view into an agent’s decision-making, so they can understand not just what happened, but why.| Sierra blog
Learn how Sierra engineered Voice Sims using a dual loop architecture to recreate lifelike conversations.| Sierra blog
Sierra's Agent Studio empowers teams of all technical abilities to build and ship highly-effective agents fast.| Sierra blog
Best practices for finding the right voice for your brand.| Sierra blog
Sierra's Voice Sims is a pioneering feature that tests voice agents in real world conditions before they talk to a single customer.| Sierra blog
With Sierra’s Agent OS, companies across industries are launching agents in weeks that scale globally, improve continuously, and deliver more human customer experiences from day one.| Sierra blog
Are you a college senior or recent graduate? If you’re driven to turn AI theory into practice, make an impact, and learn from some of the best in our industry, we’d love to build with you.| Sierra blog
By building its customer agent with Sierra, Brex has accelerated service by 90%, saved customers over 15,000 hours a year, and empowered both technical and non-technical teams to scale AI across the business.| Sierra blog
Sierra’s platform, Agent OS, enables you to create simulated conversations between agents and mock personas ensure reliability at scale. They are a new kind of testing, for a new kind of software.| Sierra blog
We’re excited to share that Sierra is now certified by an accredited certification body to both ISO 27001 and ISO 42001.| Sierra blog
Foundation models are still less reliable than traditional web services, with more downtime and response times measured in seconds, not milliseconds. And as adoption grows, they’re accessed through a burgeoning ecosystem of providers and applications, which have similar functionality but different levels of reliability. Last year, we turned this bug into a feature—developing an adaptive routing client that dynamically selects providers to maximize uptime, minimize latency, and improve the...| Sierra blog
Short “time to demo” masks the challenge of building agents that can reliably take action without supervision, safely represent a brand, and operate at the scale needed to handle millions of customer interactions a year.| Sierra blog
Sierra’s platform gives businesses the freedom to build as much or as little of their agent as they choose—from our Agent OS, which handles all the under the hood complexity, while giving brands complete control over the parts that are unique to their business, to our expert team of engineers and product managers, which help launch agents quickly, and ensure they improve over time.| Sierra blog
In the year since Sierra’s launch, we’ve seen how AI can help deliver better, more human care while also reducing costs for the industry.| Sierra blog
𝜏²-bench challenges AI agents not just to reason and act, but to coordinate, guide, and assist a user in achieving a shared objective. This leap from solo operation to co-ownership of a task pushes agents into a much more demanding space. And, critically, it reflects the kinds of tasks AI agents are increasingly being asked to perform in the real world.| Sierra blog
Here are three lessons we’ve learned building great voice experiences with our customers, for their customers. And what’s so interesting is that it’s many little things like these—not one big thing—that’s helped create a better, more human voice experience.| Sierra blog
Sierra’s Agent OS is the only platform that supports both no code and programmatic agent development. Our unique approach enables companies to mix and match—choosing the right approach for their business needs, and scaling their agent development as those needs evolve.| Sierra blog
We’re excited to share that Sierra is opening a New York office, and we’re hiring across agent development and sales.| Sierra blog
Since we first started working together last year, AI has become central to Minted’s long-term innovation strategy—with information from AI conversations helping to inform their marketing, engineering, and product teams, as well as solving real customer needs with care and creativity.| Sierra blog
By building stronger relationships between companies and consumers, AI agents can help reduce churn—transforming customer service from a cost center into a revenue-generating function.| Sierra blog
We are excited to announce that Suveer Kothari will be joining Sierra as head of our new(ish) London office, which serves companies across the UK and Europe.| Sierra blog
Services like banking and insurance play a critical role in our lives, and whatever the issue—whether you’re locked out of your account, disputing a charge, trying to find the right tax information or making a claim—you want to know you’re in the best hands. And that’s where AI agents can really help.| Sierra blog
Agents are software that can complete tasks on their own, without supervision, just like a human. And AI agents solve the age-old tension between better experiences and higher costs—so you can serve more customers, more often, and in more meaningful ways.| Sierra blog
We want to ensure that Sierra has the best voice capabilities, and it’s why we’re excited to have acquired Receptive AI. Their voice technology is already integrated into Sierra, enabling companies to build AI agents once and deploy them across any channel.| Sierra blog
Your AI agent is an extension of your brand’s voice, values, and customer experience. As Harmony, Duncan Smuthers, and Barbra all show, Sierra can help your business build better, more human customer experiences with AI.| Sierra blog
We explore how Sierra’s 𝜏-bench is shaping the development and evaluation of agents—from academic research to industry applications and next-generation development.| Sierra blog
At Sierra, we value intensity and craftsmanship—Gardening Week is an investment in the long-term quality of our software.| Sierra blog
AI agents executing processes autonomously enable an entirely new pricing model, where you pay only when the software achieves specific, valuable outcomes: outcome-based pricing.| Sierra blog
The APX program is an 18-month rotational program that gives new graduates in computer science or a related field the opportunity to work closely with our customers, building AI agents as both an Agent Engineer and an Agent Product Manager.| Sierra blog
Voice is here. Sierra's AI agents can now engage consumers with rich, natural conversations over the phone—no wait times, no frustration. Learn how this new capability is reshaping the future of customer service.| Sierra blog
Chatbots continue to fall short of customer and company expectations, struggling to solve problems, communicate with clarity, or self-improve over time. Sierra’s AI agents offer a superior alternative by handling complex tasks, communicating using natural language, and continuously improving to meet evolving customer needs. It’s time to move beyond chatbots and elevate your customer experience with AI agents.| Sierra blog
Sierra agents are refreshing SiriusXM radios, debugging Sonos setup flows, and managing OluKai returns and exchanges. In this post, we share lessons from building AI agents at scale.| Sierra blog
Agent engineers at Sierra design, build, and maintain our AI agents. They tackle problems at the intersection of software engineering, frontier AI deployment, and the most pressing challenges of our customers.| Sierra blog
For most direct-to-consumer and retail brands, the holiday season is the busiest time of year. Not only does this season represent a massive revenue opportunity, but demand surges stress-test systems and staffing. Deploying an AI agent makes it possible for companies to get ahead of the rush, scale up, deliver a better customer experience, and drive sales.| Sierra blog
Sierra’s AI research team is on a mission to advance the frontier of conversational AI agents. In this research paper, we present a new benchmark for evaluating AI agents' performance and reliability in real-world settings, with dynamic user and tool interaction.| Sierra blog
An autonomous AI agent is a new type of software that requires a new approach to development. Sierra has developed a novel, integrated approach to developing agents, from development to testing and release management. We call this the Agent Development Life Cycle.| Sierra blog
AI agents are autonomous software systems that can reason, make decisions, and pursue goals with creativity and flexibility. They’ll soon be everywhere, helping consumers, employees, and businesses alike.| Sierra blog
Sierra is the conversational AI platform for businesses, enabling every company to create always-on, delightful, conversational customer experiences for everything from support to retail, recommendations, subscription management, and more.| Sierra
Sierra helps businesses build better, more human customer experiences with AI.| Sierra
Today, we’re announcing that we’ve raised $350M additional capital at a valuation of $10B, led by Greenoaks, which is doubling down on Sierra.| Sierra
