4Degrees vs Sierra Comparison
Compare 4Degrees vs Sierra features, pricing, and more.
Last updated: November 2026
4Degrees
5.9/10
4Degrees is a relationship intelligence and deal flow CRM for private equity, venture capital, M&A advisory, corporate development, and consulting teams.
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 | 5.9/10 | 7.4/10 |
| Analytics | 6/10 | 8/10 |
| Cost | 5/10 | 2/10 |
| Customization | 6/10 | 9/10 |
| Ease of Use | 7/10 | 7/10 |
| Integration | 6/10 | 8/10 |
| Scalability | 5/10 | 9/10 |
| Security | 5/10 | 9/10 |
| Support | 7/10 | 8/10 |
| Output Quality | Not listed | 9/10 |
| 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 | 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 | ||
| Collaboration | Not listed | |
| Integrations | Not listed | |
| Sales Automation | Not listed | |
| Opportunity Management | Not listed | |
| Contact Management | Not listed | |
| Reporting & Analytics | Not listed | |
Which One Should You Choose?
Why choose 4Degrees
- Higher Cost score (5/10 vs 2/10)
- Better fit for small business (4/10 vs 1/10)
Why choose Sierra
- Higher Scalability score (9/10 vs 5/10)
- Higher Security score (9/10 vs 5/10)
Pros & Cons
4Degrees
Pros
- Builds contact and deal records automatically from email and calendar activity, so deal teams do less manual data entry.
- Relationship strength scoring helps investors find warm introduction paths to targets.
- Alerts flag when contacts change jobs, publish content, or appear in the news.
- Built for PE, VC, and M&A workflows by former Pritzker Group VC investors.
- Pulls in third-party data from sources such as Crunchbase and PitchBook.
Cons
- No public pricing, so every buyer has to request a quote.
- Small company with modest disclosed funding.
- Few independent reviews, and most detailed ones date from around 2019.
- Older reviews asked for a better mobile app.
- Not built for marketing automation or customer support use cases.
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 5.9/10 for 4Degrees. The largest gap is in Scalability: 5/10 for 4Degrees and 9/10 for Sierra.
No, neither 4Degrees nor Sierra lists a free plan.
4Degrees is the better fit for small business: we rate it 4/10 for them, against 1/10 for Sierra.
