Channel3 vs Retrofit
Channel3 vs Retrofit, compared side by side on 22 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: Channel3 is on 60/100 and Retrofit on 62/100.
Where each one leads
Channel3
- agent readiness: 71/100 against 44/100
- domain rating: 48/100 against 13/100
- headcount: 8 against 2
- headcount growth: +500.0% against -91.5%
- LinkedIn following: 1,440 against 983
Retrofit
- funding raised: $31.2M against $7.0M
At a glance
| Measure | Channel3 | Retrofit |
|---|---|---|
| What it is | Channel3 is building a universal database of every product on the internet, providing developers access to valuable product data. | Retrofit is a secondhand marketplace using AI agents to curate and personalize trending vintage inventory based on social media and sales data. |
| Category | Agentic AI, AI Agent, Agentic Commerce, Foundation Model | Agentic AI, AI Agent, E-commerce, Marketplace |
| Sells toBusiness model | B2B | B2C |
| Offering | Platform | Marketplace |
| Founded | 2023 | 2012 |
| Headquarters | San Francisco, United States | New York, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Channel3 | Retrofit |
|---|---|---|
| Employees | 8 | 2 |
| Headcount growthLast 12 months | +500.0% | -91.5% |
| Total funding | $7.0M | $31.2M |
| Latest round | Not published | Series C |
| LinkedIn followers | 1,440 | 983 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Channel3 | Retrofit |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 60/100 | 62/100 |
| Traction | 44/100 | 57/100 |
| Team | 60/100 | 60/100 |
| Community | Not published | 8/100 |
| Search visibility | 38/100 | 34/100 |
| Quality | 68/100 | 68/100 |
| Agent readinessHow well an AI agent can read and act on the site | B (71/100) | D (44/100) |
| Domain ratingLink authority, 0-100 | 48/100 | 13/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Channel3 | Retrofit |
|---|---|---|
| Hosting | Not detected | Vercel |
| CDN | Cloudflare | Vercel |
| Frameworks | Tailwind CSS | Next.js |
| Analytics | Google Analytics 4, Google Tag Manager | Google Analytics 4, Google Tag Manager, Facebook Pixel |
Product and pricing
| Measure | Channel3 | Retrofit |
|---|---|---|
| Key features | Universal Product Catalog, Developer Access, AI-Powered Product Matching, Built-in Monetization | Personalized Vintage Finds, AI-Powered Curation, Effortless Shopping, Inventory Quality Control, Automated Listing & Presentation, User Intent Capture |
What users say
| Measure | Channel3 | Retrofit |
|---|---|---|
| Reddit sentimentThreads we track | 4 positive, 0 negative across 4 threads | Not published |
“Channel3 (YC S25) Is Hiring.”r/hypeurls
Channel3 vs Retrofit: common questions
Which is better, Channel3 or Retrofit?
On our 0-100 score Retrofit rates higher (62/100 against 60/100). 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 22 data points above: read the rows that match what you are buying for.
How do Channel3 and Retrofit compare on the numbers?
Channel3 leads on agent readiness (71/100 against 44/100), domain rating (48/100 against 13/100), headcount (8 against 2), headcount growth (+500.0% against -91.5%), LinkedIn following (1,440 against 983). Retrofit leads on funding raised ($31.2M against $7.0M).
What do real users say about Channel3 and Retrofit?
Channel3: 4 positive and 0 negative mentions across 4 Reddit threads we track, mostly in r/hypeurls.
Read the full Channel3 review and pricing or the Retrofit review and pricing. You can also browse other Channel3 alternatives we track.