Comparing LivePerson and Sierra AI? Both are AI Agents & Chatbots and Enterprise tools in the directory, which is why buyers put them on the same shortlist. Below is a side-by-side look at how they price, what they integrate with, and when each is the better fit, so you can pick on the facts rather than either vendor's own sales page.
| Attribute | LivePerson | Sierra AI |
|---|---|---|
| Pricing | Paid · Custom | Per resolution · Custom |
| Founded | 1995 | 2023 |
| Categories | AI Agents & Chatbots Contact Center & CCaaS Enterprise | AI Agents & Chatbots Enterprise Voice & Phone AI |
| Integrations | Salesforce Zendesk Microsoft Dynamics ServiceNow Shopify WhatsApp Apple Messages for Business Avaya | Salesforce Zendesk Shopify Twilio Stripe Snowflake |
LivePerson Conversational Cloud is an enterprise platform for handling customer conversations at scale across web messaging, in-app chat, SMS, WhatsApp, Apple Messages for Business, and social channels. AI agents built on the platform resolve routine questions using an intent engine and a bring-your-own-LLM approach, while human agents work in a messaging-first workspace with a generative AI Copilot that drafts replies, summarizes conversations, and translates messages in real time. Voice AI ties phone calls into the same routing and analytics, and Conversational Intelligence reporting shows what customers are actually asking about.
The company is one of the original names in this space. Robert LoCascio founded LivePerson in New York in 1995, back when web chat was a novelty, and took it public on Nasdaq (ticker LPSN) in 2000. It bought VoiceBase and Tenfold in 2021 to add voice analytics and CRM integrations, partnered with Avaya in 2024 to bolt its digital capabilities onto Avaya contact centers, and today claims 18,000 plus brands, with HSBC, Burberry, PNC, and Zurich among its named customers. LoCascio later stepped down, and John Sabino has been CEO since January 2024. In April 2026, voice AI company SoundHound AI agreed to acquire LivePerson.
Pricing is quote-based. LivePerson publishes Bronze, Silver, and Gold tiers describing what each unlocks, from the agent workspace up to advanced analytics and generative AI, but no dollar figures. Messaging channels like SMS and WhatsApp pass through provider rates plus a 15 percent handling fee, and generative AI entitlements are negotiated with sales. Budget for an enterprise contract, not a credit-card signup.
Choose LivePerson if you are a large brand that lives on asynchronous messaging and wants proven scale, deep channel coverage, and agent-assist AI with enterprise controls. Look elsewhere if you are a small team that wants transparent pricing and self-service setup, or if the pending SoundHound acquisition and several years of revenue decline make you nervous about vendor stability.
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Sierra builds conversational AI agents for the enterprise, and it arrived with about as much star power as a startup can carry. It was founded in 2023 by Bret Taylor and Clay Bavor, and if those names ring a bell it is because Taylor co-created Google Maps, served as CTO of Facebook and co-CEO of Salesforce, and currently chairs the board of OpenAI, while Bavor spent eighteen years at Google leading its virtual and augmented reality work. Company lore says the whole thing was hatched over a grilled branzino lunch in Palo Alto.
The product lives up to the pedigree. From a single build, Sierra deploys a branded agent across chat, voice, email, SMS, and even ChatGPT, following your policies, adopting your brand's voice, and escalating gracefully when a conversation gets thorny. Its voice agents are a standout: they hold natural, low-latency conversations, read sentiment, and can even take a credit card or ACH payment over the phone in one uninterrupted call, with no clumsy handoff to a separate system.
Under the hood sits Agent OS, a platform for building, testing, and supervising agents, with tooling to run voice simulations and rehearse behavior before anything reaches a real customer. Pricing is outcome-based, tied to conversations or successful resolutions and wrapped in multi-year enterprise contracts, so Sierra is aimed at large brands rather than weekend experimenters. Reported customers include SoFi, Ramp, and Brex, and the company says its agents already serve a meaningful slice of the Fortune 50.
Sierra's fundraising has kept pace with its towering ambition, vaulting the company into the rarefied tier of the most valuable AI startups in barely two years. For enterprises that want polished, on-brand agents across every channel and are willing to invest the time and budget to do it properly, Sierra is a genuine marquee choice.
Read the full Sierra AI listing → · See Sierra AI alternatives →
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