LivePerson vs Sierra Comparison
Compare LivePerson vs Sierra features, pricing, and more.
Last updated: November 2026
L
LivePerson
6.4/10
An enterprise conversational AI platform for digital customer service teams. It combines messaging channels, AI agents, knowledge-grounded bots and agent copilot tools.
Sierra
7.4/10
Sierra is an enterprise conversational AI platform that builds and runs customer service agents across chat, voice, SMS, WhatsApp and email.
Feature-by-Feature Comparison
| Feature | L LivePerson | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.4/10 | 7.4/10 |
| Analytics | 6/10 | 8/10 |
| Cost | 3/10 | 2/10 |
| Customization | 8/10 | 9/10 |
| Ease of Use | 5/10 | 7/10 |
| Integration | 8/10 | 8/10 |
| Output Quality | 7/10 | 9/10 |
| Scalability | 9/10 | 9/10 |
| Security | 8/10 | 9/10 |
| Support | 5/10 | 8/10 |
| Pricing | ||
| Free plan | No | No |
| Cheapest paid plan | Contact for pricing | Contact for pricing |
| Estimated cost for 10 users | Contact for pricing | Contact for pricing |
| Features | ||
| AI Agents | ||
| Chatbots | ||
| Knowledge Base Search | ||
| Text Generation | ||
| Workflow Automation | ||
| API Access | Not listed | |
| Data Analysis | Not listed | |
| Enterprise Controls | Not listed | |
| Voice and Audio | Not listed | |
Which One Should You Choose?
LWhy choose LivePerson
- Higher Cost score (3/10 vs 2/10)
Why choose Sierra
- Higher Support score (8/10 vs 5/10)
- Higher Analytics score (8/10 vs 6/10)
- Better fit for startups (3/10 vs 1/10)
Pros & Cons
LLivePerson
Pros
- Covers many channels in one agent workspace, including web, app, SMS, WhatsApp, Messenger and Instagram.
- Its LLM gateway masks personal data, checks answers for hallucinations and lets customers bring their own LLM.
- Offers more than 50 APIs plus Functions, the Integration Hub and a Salesforce connector for deep customization.
- Reviewers report stable performance during peak traffic. It scores 4.3 on G2 and Capterra and 4.2 on Gartner Peer Insights.
Cons
- There is no public pricing, and messaging channels carry a 15% handling fee on top of set rates.
- Reviewers describe a difficult setup and a cluttered interface, especially for complex flows.
- Reporting is hard to customize, and transcript export options are limited.
- Users report slow or inconsistent support. Revenue has been shrinking, and SoundHound AI bought the company in 2026.
Sierra
Pros
- Outcome-based billing means customers usually pay only for resolved conversations or other agreed results, not for each seat.
- Three build options cover both CX teams and engineers: the no-code Agent Studio, the code-first Agent SDK, and Ghostwriter for building agents from SOPs.
- One agent runs across chat, voice, SMS, WhatsApp, email and ChatGPT, keeping context between channels.
- Its list of compliance attestations is broad, covering SOC 2, ISO 27001, ISO 42001, HIPAA, PCI DSS and FedRAMP.
- It has a strong roster of enterprise customers, including SiriusXM, ADT, Rocket Mortgage and SoFi.
Cons
- There is no public pricing, and competitor estimates put annual contracts at about $150,000 or more.
- There is no self-serve or trial tier, so small teams cannot try it on their own.
- Implementation is largely vendor-led, which can make customers depend on Sierra's team for changes.
- There are few public reviews (7 on Gartner Peer Insights) to verify claims against.
- Some reviewers say voice quality still falls short of human level, and that complex telephony setups depend on how far the integration goes.
Not sold on either?
Frequently Asked Questions
Sierra scores higher on our AI Software criteria: 7.4/10 against 6.4/10 for LivePerson. The largest gap is in Support: 5/10 for LivePerson and 8/10 for Sierra.
No, neither LivePerson nor Sierra lists a free plan.
Sierra is the better fit for startups: we rate it 3/10 for them, against 1/10 for LivePerson.
