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r/LangChain↗

LangChain enables every company to own their intelligence. Control, govern, and compound intelligence with an open agent engineering ecosystem.

110k subscribers381 posts / mo in Sep 2026 (incl. <1% by known bots)288 authors / mosince 2023

r/LangChain has 110k members (+40% over the last 12 months). It gets about 381 posts a month from 288 people. Top topics: LLMs and AGI Progress, Local LLMs and OpenAI Updates.

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Size and growth

How r/LangChain has grown

r/LangChain

Subscriber growth

Subscribers over time

+40%in 12 months · +5.1% in 3 months · +1.2% in 1 month
Oct 2026109k
Growing109k subscribers
  • no data — drawn from 0 at creation (Jan 2023)
Live · through Oct 2026
r/LangChain

Monthly activity

Posts, comments and authors per month

+19%vs Sep 2025 · −30% last 3 months vs the 3 before
Sep 2026381
BusierPeaked at 703 in May 2026
Sep 2026: incl. <1% by known botsData through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/LangChain

Top topics

Share of the subreddit's posts

  1. LLMs and AGI Progress3.3%
  2. Local LLMs1.0%
  3. OpenAI Updates0.7%
  4. ChatGPT & AI Developments0.7%
  5. ChatGPT Usage & Plugins0.3%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Medium
  2. PyPI
  3. Substack
  4. Hugging Face
  5. Claude Code Docs

The full report

Everything else about r/LangChain

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