Circuit vs Harbinger
Circuit vs Harbinger, compared side by side on 15 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: Circuit is on 44/100 and Harbinger on 58/100.
Where each one leads
Circuit
- domain rating: 33/100 against 5/100
Harbinger
- our overall score: 58/100 against 44/100
- agent readiness: 41/100 against 36/100
- funding raised: $393M against $48.3M
At a glance
| Measure | Circuit | Harbinger |
|---|---|---|
| What it is | Your best people can't be everywhere. Their expertise can. Circuit helps manufacturing and service teams quote, troubleshoot, and support with confidence. | Enterprise AI Decision Engine transforming data into predictive business insights and automated sales optimization. |
| Category | Conversational AI, AI Agent, Customer Service Automation, Workflow Automation | Conversational AI, Voice AI, AI Agent, Customer Service Automation |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Software |
| Founded | 2016 | 2021 |
| Headquarters | San Francisco, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Circuit | Harbinger |
|---|---|---|
| Employees | 54 | Not published |
| Total funding | $48.3M | $393M |
| Latest round | Seed | Not published |
| LinkedIn followers | 6,303 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Circuit | Harbinger |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 44/100 | 58/100 |
| Traction | 56/100 | Not published |
| Team | 30/100 | 30/100 |
| Community | 15/100 | Not published |
| Search visibility | 20/100 | 6/100 |
| Quality | 45/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | F (36/100) | D (41/100) |
| Domain ratingLink authority, 0-100 | 33/100 | 5/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Circuit | Harbinger |
|---|---|---|
| Hosting | Not detected | Vercel |
| CDN | Cloudflare | Vercel |
| CMS | Webflow | Not detected |
| Analytics | Google Analytics 4, Linkedin Insight, Facebook Pixel | Google Analytics 4 |
Circuit vs Harbinger: common questions
Which is better, Circuit or Harbinger?
On our 0-100 score Harbinger rates higher (58/100 against 44/100). 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 15 data points above: read the rows that match what you are buying for.
How do Circuit and Harbinger compare on the numbers?
Circuit leads on domain rating (33/100 against 5/100). Harbinger leads on our overall score (58/100 against 44/100), agent readiness (41/100 against 36/100), funding raised ($393M against $48.3M).
Read the full Circuit review and pricing or the Harbinger review and pricing. You can also browse other Circuit alternatives we track.