Lark vs Slack
Lark vs Slack, 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: Lark is on 63/100 and Slack on 68/100.
Where each one leads
Lark
Leads on none of the measures we hold for both companies.
Slack
- our overall score: 68/100 against 63/100
- agent readiness: 56/100 against 48/100
- domain rating: 92/100 against 58/100
- headcount: 3,000 against 139
- funding raised: $1.4B against $187M
At a glance
| Measure | Lark | Slack |
|---|---|---|
| What it is | AI-powered digital health coaching for chronic condition management. | Channel-based messaging and collaboration platform for team communication and workflow automation |
| Category | HealthTech, MedTech, Digital Health, Chronic Disease Management | SaaS, Collaboration, Communication, Enterprise Software |
| Sells toBusiness model | B2B | Not published |
| Offering | Software | platform | SaaS |
| Founded | 2011 | 2013 |
| Headquarters | Mountain View, United States | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Lark | Slack |
|---|---|---|
| Employees | 139 | 3,000 |
| Headcount growthLast 12 months | -8.3% | Not published |
| Total funding | $187M | $1.4B |
| Latest round | Series D | IPO |
| LinkedIn followers | 27,839 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Lark | Slack |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 63/100 | 68/100 |
| Traction | 60/100 | 60/100 |
| Team | 70/100 | 10/100 |
| Community | Not published | 8/100 |
| Search visibility | 33/100 | 48/100 |
| Quality | 68/100 | 90/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (48/100) | D (56/100) |
| Domain ratingLink authority, 0-100 | 58/100 | 92/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Lark | Slack |
|---|---|---|
| Hosting | Not detected | AWS |
| CDN | Cloudflare | Not detected |
| CMS | Webflow | Not detected |
| Analytics | Google Tag Manager, Segment | Google Tag Manager |
Lark vs Slack: common questions
Which is better, Lark or Slack?
On our 0-100 score Slack rates higher (68/100 against 63/100). 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 Lark and Slack compare on the numbers?
Slack leads on our overall score (68/100 against 63/100), agent readiness (56/100 against 48/100), domain rating (92/100 against 58/100), headcount (3,000 against 139), funding raised ($1.4B against $187M).
Read the full Lark review and pricing or the Slack review and pricing. You can also browse other Lark alternatives we track.