Skip to content

r/EffectiveAltruism↗

Effective Altruists on Reddit

Effective altruism is a growing social movement founded on the imperative to make the world as good a place as it can be, the use of evidence and reason to find out how to do so, and the audacity to actually try.

38k subscribers113 posts / mo in Sep 202695 authors / mosince 2012

r/EffectiveAltruism has 38k members (+14% over the last 12 months). It gets about 113 posts a month from 95 people. Top topics: CharityDonations, AI Dangers & Ethics and Enterprise Architecture Careers.

Free report

When to post on r/EffectiveAltruism

You've used today's free reports

Visitors without an account can open 3 subreddit reports a day. The best time to post on r/EffectiveAltruism, removal risk and the rest of the report are one step away.

Size and growth

How r/EffectiveAltruism has grown

r/EffectiveAltruism

Subscriber growth

Subscribers over time

+14%in 12 months · +3.1% in 3 months · +0.7% in 1 month
Oct 202638k
Growing38k subscribers
Data since Mar 2018Live · through Oct 2026
r/EffectiveAltruism

Monthly activity

Posts, comments and authors per month

+30%vs Sep 2025 · +30% last 3 months vs the 3 before
Sep 2026113
BusierPeaked at 146 in Dec 2024
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/EffectiveAltruism

Top topics

Share of the subreddit's posts

  1. CharityDonations0.7%
  2. AI Dangers & Ethics0.7%
  3. Enterprise Architecture Careers0.5%
  4. Pain and Suffering0.2%
  5. Future of AI0.2%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Substack
  2. 80,000 Hours
  3. Giving What We Can
  4. Gofund
  5. Vox

The full report

Everything else about r/EffectiveAltruism

Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.

Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research