Retell AI vs TalkStack AI
Retell AI vs TalkStack AI, compared side by side on 17 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: Retell AI is on 63/100 and TalkStack AI on 21/100.
Where each one leads
Retell AI
- our overall score: 63/100 against 21/100
- agent readiness: 61/100 against 25/100
- domain rating: 76/100 against 9/100
- headcount: 35 against 2
TalkStack AI
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Retell AI | TalkStack AI |
|---|---|---|
| What it is | Voice AI agent platform handling more calls per second than the US 911 system, $60M ARR with a 35-person team. | TalkStack AI provides hyper-realistic AI agents powered by LLMs to scale sales and customer support teams. |
| Category | Agentic AI, AI Agents, AI Voice Synthesis, AI Voice Cloning | Agentic AI, Customer Service, AI Agents, Contact Center AI |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Platform |
| Founded | 2023 | 2023 |
| Headquarters | San Francisco, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Retell AI | TalkStack AI |
|---|---|---|
| Employees | 35 | 2 |
| Total funding | $14.0M | Not published |
| Latest round | Seed | Not published |
| LinkedIn followers | 20,979 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Retell AI | TalkStack AI |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 63/100 | 21/100 |
| Traction | 66/100 | 5/100 |
| Team | 60/100 | 30/100 |
| Community | 8/100 | Not published |
| Search visibility | 48/100 | 13/100 |
| Quality | 68/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | C (61/100) | F (25/100) |
| Domain ratingLink authority, 0-100 | 76/100 | 9/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Retell AI | TalkStack AI |
|---|---|---|
| CDN | Cloudflare | Cloudflare |
| CMS | Webflow | Webflow |
| Frameworks | Not detected | Tailwind CSS |
| Analytics | Google Analytics 4, Google Tag Manager, Mixpanel, Linkedin Insight +1 more | Not detected |
| Support stack | Discourse | Not detected |
Product and pricing
| Measure | Retell AI | TalkStack AI |
|---|---|---|
| Key features | AI Voice Agent Platform, Auto-Sync Knowledge Base, Powerful Call Transfer, Easy Appointment Booking, IVR Navigation & Batch Calling, Compliance & Scalability | Human-like Voice + Text Agent, Automated Workflow Creation, Omnichannel Experience, High Automation & Human Escalation, Multi-language Support, Customizable AI Agent |
Retell AI vs TalkStack AI: common questions
Which is better, Retell AI or TalkStack AI?
On our 0-100 score Retell AI rates higher (63/100 against 21/100). 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 17 data points above: read the rows that match what you are buying for.
How do Retell AI and TalkStack AI compare on the numbers?
Retell AI leads on our overall score (63/100 against 21/100), agent readiness (61/100 against 25/100), domain rating (76/100 against 9/100), headcount (35 against 2).
Read the full Retell AI review and pricing or the TalkStack AI review and pricing. You can also browse other Retell AI alternatives we track.