Cresta vs Ultravox.ai
Cresta vs Ultravox.ai, compared side by side on 18 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: Cresta is on 66/100 and Ultravox.ai on 52/100.
Where each one leads
Cresta
- our overall score: 66/100 against 52/100
- domain rating: 70/100 against 51/100
- headcount: 702 against 16
- funding raised: $125M against $10.0M
- LinkedIn following: 73,299 against 5,687
Ultravox.ai
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Cresta | Ultravox.ai |
|---|---|---|
| What it is | Generative AI for contact centers. | Ultravox.ai (formerly Fixie.ai) is building human-like voice AI agents and models for natural, real-time communication. |
| Category | Agentic AI, Customer Service, AI Agents, Voice Agent | Agentic AI, AI Agents, Foundation Model, Large Language Model |
| Sells toBusiness model | Not published | B2B |
| Offering | Not published | Platform |
| Founded | Not published | 2022 |
| Headquarters | United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Cresta | Ultravox.ai |
|---|---|---|
| Employees | 702 | 16 |
| Total funding | $125M | $10.0M |
| Latest round | Series D | Seed |
| LinkedIn followers | 73,299 | 5,687 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Cresta | Ultravox.ai |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 66/100 | 52/100 |
| Traction | 60/100 | 47/100 |
| Team | 60/100 | 30/100 |
| Search visibility | 33/100 | 54/100 |
| Quality | 78/100 | 58/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (51/100) | D (46/100) |
| Domain ratingLink authority, 0-100 | 70/100 | 51/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Cresta | Ultravox.ai |
|---|---|---|
| CDN | Cloudflare | Not detected |
| CMS | Webflow | Framer |
| Analytics | Google Tag Manager | Fathom |
| Support stack | HubSpot | Not detected |
| Open source | No | Yes |
Product and pricing
| Measure | Cresta | Ultravox.ai |
|---|---|---|
| Key features | Not published | Human-like Voice AI, Ultravox v0.5 Model, Enhanced Transcription Accuracy, Expanded Language Support, Direct Speech Consumption, Real-time APIs & SDKs |
What users say
| Measure | Cresta | Ultravox.ai |
|---|---|---|
| Reddit sentimentThreads we track | 1 positive, 1 negative across 4 threads | Not published |
“I’ve received an offer for Strategic AE at Cresta looking after key accounts. Seems like Cresta are getting a lot of traction in the Conversational Intelligence, being one of the native AI players.”r/techsales
Cresta vs Ultravox.ai: common questions
Which is better, Cresta or Ultravox.ai?
On our 0-100 score Cresta rates higher (66/100 against 52/100). 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 18 data points above: read the rows that match what you are buying for.
How do Cresta and Ultravox.ai compare on the numbers?
Cresta leads on our overall score (66/100 against 52/100), domain rating (70/100 against 51/100), headcount (702 against 16), funding raised ($125M against $10.0M), LinkedIn following (73,299 against 5,687).
What do real users say about Cresta and Ultravox.ai?
Cresta: 1 positive and 1 negative mentions across 4 Reddit threads we track, mostly in r/techsales.
Read the full Cresta review and pricing or the Ultravox.ai review and pricing. You can also browse other Cresta alternatives we track.