The AI Index
Back to Cuts
CutAttritionProductivity

Slack

HQ San Francisco, USFounded 2009private otherWebsite @SlackHQ
Composite score
14.3
rank #33 · cuts

#33 Cut. 2.3k employees.

Watch Slack · One email when its rank, headcount or news changes. Mondays, only when something moved.
Head-to-headvs Granolavs Linearvs Notionvs Otter.ai
Headcount
2.3k
0.0%
90d change
-0.4%
Funding events (90d)
0
Layoff events (90d)
0

Signals

source: PDL v25
Inferred revenue
$1B-$10B
PDL estimate
Revenue / employee
$2.4M
midpoint ÷ headcount
12-month turnover
15.5%
within typical band
Average tenure
3.3 yrs
long — sticky culture
Time since last raise
no rounds on record

Hiring flow · Slack

source: PDL v25

Headcount by role

12-month growth · PDL v25
Engineering
1,132
-1%
Sales
201
-13%
Operations
154
-7%
Product
134
-4%
Marketing
104
-16%
Support
94
-25%
Fulfillment
58
-18%
Analyst
49
-17%
Other
198

In the news

relevance ≥ 6 · last 180 days
  1. DecryptHeadline3d ago
    Jack Dorsey's Block Launches Buzz, a Nostr-Based Slack and GitHub Rival for AI Agents

    Named in title and article as competitor; Block explicitly built Buzz to reduce dependency on Slack.

  2. TechCrunch3d ago
    Jack Dorsey is taking on Slack with Buzz, a group chat platform for teams and their AI agents

    Slack is named as the primary competitive target for Buzz; article discusses how Buzz aims to improve upon and replace Slack workflows.

  3. OpenAI11d ago
    How sales teams use ChatGPT Work

    Slack is listed as a suggested plugin for Codex to access account discussions and send recaps.

  4. TechCrunchHeadline1mo ago
    Anthropic’s Claude Tag is learning your company, one Slack message at a time

    Slack is the platform where Claude Tag operates; central to the feature but not the subject of the article.

Events

Layoff · 2.52% (82 roles)
Departures in 2023-04: 132 vs 6-mo baseline of 50.5 (2.61× spike). Derived from PDL.
3y ago
Layoff · 3.01% (102 roles)
Departures in 2023-03: 153 vs 6-mo baseline of 50.5 (3.03× spike). Derived from PDL.
3y ago

Score history

2026-07-20
14.3
rank #33
2026-07-13
14.6
rank #32
2026-07-06
14.6
rank #29
2026-06-29
9.4
rank #24
2026-06-22
13.1
rank #25
2026-06-15
12.2
rank #37
2026-06-08
10.2
rank #34
2026-06-01
10.2
rank #34
2026-05-25
29.6
rank #29
2026-05-18
27.7
rank #28
2026-05-11
27.7
rank #28
2026-05-04
27.7
rank #28