Fibery vs Sierra Comparison
Compare Fibery vs Sierra features, pricing, and more.
Last updated: November 2026
Fibery
6.8/10
Fibery is a configurable work and knowledge management platform where startups and product teams build linked databases, docs, whiteboards, and project views.
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 | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.8/10 | 7.4/10 |
| Analytics | 6/10 | 8/10 |
| Cost | 7/10 | 2/10 |
| Customization | 9/10 | 9/10 |
| Ease of Use | 5/10 | 7/10 |
| Integration | 7/10 | 8/10 |
| Scalability | 6/10 | 9/10 |
| Security | 7/10 | 9/10 |
| Support | 7/10 | 8/10 |
| Output Quality | Not listed | 9/10 |
| Pricing | ||
| Free plan | Yes | No |
| Cheapest paid plan | €12/user/mo Standard | Contact for pricing |
| Estimated cost for 10 users | Free Free | Contact for pricing |
| Features | ||
| AI Agents | Not listed | |
| Chatbots | Not listed | |
| Enterprise Controls | Not listed | |
| Knowledge Base Search | Not listed | |
| Text Generation | Not listed | |
| Voice and Audio | Not listed | |
| Workflow Automation | Not listed | |
| More features | ||
| App integrations | Not listed | |
| Client collaboration | Not listed | |
| Collaboration tools | Not listed | |
| Dashboards | Not listed | |
| Databases | Not listed | |
| Docs | Not listed | |
| Gantt charts | Not listed | |
| Kanban boards | Not listed | |
| Knowledge base | Not listed | |
| Reporting | Not listed | |
| Scheduling | Not listed | |
| Spreadsheet interface | Not listed | |
| Task lists | Not listed | |
| Task management | Not listed | |
| Timeline view | Not listed | |
| Whiteboards | Not listed | |
| Workflow automation | Not listed | |
| Team messaging | Not listed | |
Fibery vs Sierra cost by team size
| Team size | Fibery | Sierra |
|---|---|---|
| 1 user | FreeFree | Contact for pricing |
| 5 users | FreeFree | Contact for pricing |
| 10 users | FreeFree | Contact for pricing |
| 25 users | €1,000/moEnterprise | Contact for pricing |
| 50 users | €2,000/moEnterprise | Contact for pricing |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Which One Should You Choose?
Why choose Fibery
- Has a free plan (Sierra does not)
- Higher Cost score (7/10 vs 2/10)
- Better fit for small business (7/10 vs 1/10)
- Better fit for startups (9/10 vs 3/10)
Why choose Sierra
- Higher Scalability score (9/10 vs 6/10)
- Higher Analytics score (8/10 vs 6/10)
- Better fit for customer support teams (10/10 vs 4/10)
- Better fit for enterprise (10/10 vs 5/10)
Pros & Cons
Fibery
Pros
- Users define their own databases and relations, so a single workspace can replace separate tools for feedback, roadmaps, and wikis.
- Observers and guests are free on every plan, so stakeholders can view and comment without adding paid seats.
- Nine view types, including Gantt with dependencies, Timeline, Calendar, and Map, are built in.
- Reviewers on G2 and Capterra describe support as responsive and hands-on, including help with complex setups.
- Every plan includes AI features and an MCP server, and the vendor says customer data is not used to train AI models.
Cons
- Reviewers most often complain about the steep learning curve, especially for non-technical teammates.
- Teams must model their processes before tracking feels natural, which adds setup overhead.
- Reviewers describe dashboards and charts as less polished than in dedicated tools, and portfolio resource planning is limited.
- SSO and SCIM are available only on Enterprise, which requires at least 25 paid seats.
- Fibery does not list native time tracking or team chat on its features page.
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 6.8/10 for Fibery. The largest gap is in Cost: 7/10 for Fibery and 2/10 for Sierra.
Fibery has a free plan; Sierra does not list one.
Sierra is the better fit for customer support teams: we rate it 10/10 for them, against 4/10 for Fibery.
