Sierra vs Voiceflow
Sierra vs Voiceflow, compared side by side on 19 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Sierra is on 62/100 and Voiceflow on 61/100.
Where each one leads
Sierra
- headcount: 277 against 87
- funding raised: $1.6B against $43.5M
Voiceflow
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Sierra | Voiceflow |
|---|---|---|
| What it is | Sierra helps businesses build better, more human customer experiences with AI agents that can understand, reason, and take action across various channels. | A collaborative platform for designing, prototyping, and launching AI agents for chat and voice. |
| Category | Agentic AI, Conversational AI, Customer Service, AI Agents | Conversational AI, Voice AI, AI Agents, Chatbots |
| Sells toBusiness model | B2B | B2B |
| Offering | Not published | Platform |
| Founded | 2023 | 2018 |
| Headquarters | United States | Toronto, Canada |
| Status | Active | Active |
Size, funding and growth
| Measure | Sierra | Voiceflow |
|---|---|---|
| Employees | 277 | 87 |
| Total funding | $1.6B | $43.5M |
| Latest round | Growth | Not published |
| Valuation | $10K | $105M |
| LinkedIn followers | 29,888 | 24,634 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Sierra | Voiceflow |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 62/100 | 61/100 |
| Traction | 60/100 | 58/100 |
| Team | 50/100 | 70/100 |
| Community | 8/100 | Not published |
| Search visibility | 78/100 | 22/100 |
| Quality | 65/100 | 68/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (50/100) | D (52/100) |
| Domain ratingLink authority, 0-100 | 73/100 | 77/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Sierra | Voiceflow |
|---|---|---|
| Hosting | Vercel | Vercel |
| CDN | Cloudflare | Vercel |
| CMS | Ghost | Not detected |
| Frameworks | Next.js, Tailwind CSS | Not detected |
| Support stack | HubSpot | Not detected |
Product and pricing
| Measure | Sierra | Voiceflow |
|---|---|---|
| Key features | AI Agent Deployment, Real-time Customer Support, Voice Communication Integration, Agent OS for Scalability, Actionable AI Integration, Robust Security & Compliance | Not published |
Sierra vs Voiceflow: common questions
Which is better, Sierra or Voiceflow?
On our 0-100 score Sierra rates higher (62/100 against 61/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 19 data points above: read the rows that match what you are buying for.
How do Sierra and Voiceflow compare on the numbers?
Sierra leads on headcount (277 against 87), funding raised ($1.6B against $43.5M).
Read the full Sierra review and pricing or the Voiceflow review and pricing. You can also browse other Sierra alternatives we track.