Knack vs Sierra Comparison
Compare Knack vs Sierra features, pricing, and more.
Last updated: November 2026
Knack
6.6/10
Knack is a no-code platform for building database-driven web apps, portals and project trackers, priced per plan rather than per user.
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 | 6.6/10 | 7.4/10 |
| Integration | 6/10 | 8/10 |
| Analytics | 6/10 | 8/10 |
| Customization | 8/10 | 9/10 |
| Ease of Use | 7/10 | 7/10 |
| Support | 6/10 | 8/10 |
| Cost | 6/10 | 2/10 |
| Scalability | 6/10 | 9/10 |
| Security | 7/10 | 9/10 |
| Output Quality | Not listed | 9/10 |
| Pricing | ||
| Free plan | No | No |
| Cheapest paid plan | $59/mo Starter | Contact for pricing |
| Estimated cost for 10 users | $59/mo Starter | 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 | ||
| Scheduling | Not listed | |
| Databases | Not listed | |
| Spreadsheet interface | Not listed | |
| File sharing | Not listed | |
| Client collaboration | Not listed | |
| App integrations | Not listed | |
| Timeline view | Not listed | |
| Workflow automation | Not listed | |
| Dashboards | Not listed | |
| Kanban boards | Not listed | |
| Reporting | Not listed | |
Knack vs Sierra cost by team size
| Team size | Knack | Sierra |
|---|---|---|
| 1 user | $59/moStarter | Contact for pricing |
| 5 users | $59/moStarter | Contact for pricing |
| 10 users | $59/moStarter | Contact for pricing |
| 25 users | $59/moStarter | Contact for pricing |
| 50 users | $59/moStarter | 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 Knack
- Higher Cost score (6/10 vs 2/10)
- Better fit for small business (8/10 vs 1/10)
- Better fit for startups (6/10 vs 3/10)
Why choose Sierra
- Higher Scalability score (9/10 vs 6/10)
- Higher Integration score (8/10 vs 6/10)
- Better fit for enterprise (10/10 vs 5/10)
- Better fit for developers (6/10 vs 3/10)
Pros & Cons
Knack
Pros
- Pricing is by plan, not per user, so apps can be shared with many users or external clients at no extra seat cost.
- Reviewers say non-coders can build relational, feature-rich apps without writing code.
- Front ends include calendars, maps, Kanban boards, charts and dashboards for tracking projects.
- Knack's site lists SOC 2 Type II, HIPAA and GDPR compliance, plus SSO.
- Client and vendor portals with role-based logins are a core use case.
Cons
- It is a general app builder, so project management features such as Gantt charts and time tracking are not ready out of the box.
- Reviewers report slower performance and limited customization on larger, complex apps.
- Users have complained that there is no change log for edits made in the builder.
- A competitor's comparison rates its workflow automation as basic and says it relies on Zapier for many integrations.
- The Starter plan is capped at 3 apps and 20,000 records, and promotional prices rise after 3 months.
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 6.6/10 for Knack. The largest gap is in Cost: 6/10 for Knack and 2/10 for Sierra.
No, neither Knack nor Sierra lists a free plan.
Knack is the better fit for small business: we rate it 8/10 for them, against 1/10 for Sierra.
