Technology

Top Artificial Intelligence & Machine Learning subreddits

Name: Top subreddits by members, growth and activity
Creator: KissMyPost
License: https://creativecommons.org/licenses/by/4.0/

The largest, fastest growing and most active subreddits about Artificial Intelligence & Machine Learning, measured every month.

By KissMyPostData for October 2026

Short answer

225 Artificial Intelligence & Machine Learning subreddits have more than 10,000 members, and 332 have more than 1,000. The largest is r/technology with 20.6 million members. Over the last 12 months r/generativeAI grew fastest (+566%) and r/ClaudeAI gained the most members (+856,683). The median Artificial Intelligence & Machine Learning subreddit with 10,000+ members grew +40% over 12 months (104 subreddits with a known growth), against +15% across all subreddits that size.

Largest Artificial Intelligence & Machine Learning subreddits

Largest Artificial Intelligence & Machine Learning subreddits
#	Subreddit	Members	12-mo growth	Commenters / mo
1	r/technology	20.59M	+3.2%	96,836
2	r/ChatGPT	11.7M	+4.4%	44,126
3	r/singularity	4.01M	+6.3%	21,653
4	r/MachineLearning	3.08M	+2.8%	2,051
5	r/OpenAI	2.89M	+14%	12,825
6	r/CharacterAI	2.64M	+4.0%	8,561
7	r/ArtificialInteligence	1.96M	+23%	13,909
8	r/midjourney	1.79M	+2.3%	1,361
9	r/GPT3	1.42M	+0.7%	85
10	r/artificial	1.35M	+16%	7,110
11	r/weirddalle	1.22M	+0.4%	835
12	r/ClaudeAI	1.22M	+239%	32,274
13	r/StableDiffusion	1.03M	+22%	9,664
14	r/LocalLLaMA	854,807	+54%	16,757
15	r/ChatGPTPromptGenius	825,839	+28%	613
16	r/aiArt	690,131	+7.7%	3,599
17	r/learnmachinelearning	687,160	+21%	3,127
18	r/ChatGPTPro	618,877	+20%	1,364
19	r/AI_Agents	467,004	+107%	8,972
20	r/ClaudeCode	458,034	–	21,923
21	r/isthisAI	447,462	–	28,026
22	r/PromptEngineering	424,420	+64%	1,829
23	r/ChatGPTCoding	405,789	+23%	1,243
24	r/GeminiAI	395,146	+183%	11,994
25	r/antiai	380,575	+483%	50,713

Fastest growing Artificial Intelligence & Machine Learning subreddits

Member growth over 12 months, among subreddits that had at least 18,251 members a year ago.

Fastest growing Artificial Intelligence & Machine Learning subreddits
#	Subreddit	12-mo growth	Members gained	Members	Commenters / mo
1	r/generativeAI	+566%	+144,157	169,622	3,466
2	r/antiai	+483%	+315,278	380,575	50,713
3	r/Anthropic	+319%	+176,396	231,733	10,158
4	r/RealOrAI	+308%	+148,609	196,860	3,469
5	r/ClaudeAI	+239%	+856,683	1.22M	32,274
6	r/AIDangers	+208%	+41,934	62,111	3,971
7	r/Ai_art_is_not_art	+207%	+38,914	57,727	7,668
8	r/AI_India	+183%	+38,574	59,600	1,856
9	r/GeminiAI	+183%	+255,349	395,146	11,994
10	r/grok	+175%	+144,445	226,863	5,437
11	r/LocalLLM	+173%	+157,908	249,034	10,555
12	r/WritingWithAI	+164%	+104,895	168,772	2,654
13	r/GenAI4all	+150%	+30,114	50,139	4,139
14	r/GithubCopilot	+149%	+52,003	86,945	1,280
15	r/notebooklm	+122%	+82,996	150,959	759
16	r/aiagents	+121%	+68,402	124,738	1,135
17	r/SillyTavernAI	+118%	+72,390	133,952	3,727
18	r/AIAssisted	+111%	+94,573	179,451	549
19	r/FacebookAIslop	+109%	+50,913	97,481	10,047
20	r/AI_Agents	+107%	+241,025	467,004	8,972
21	r/aivideos	+100%	+66,428	132,619	4,541
22	r/MyBoyfriendIsAI	+98%	+33,502	67,664	199
23	r/aiwars	+95%	+84,737	173,599	13,001
24	r/DeadInternetTheory	+86%	+31,405	67,900	1,268
25	r/therapyGPT	+84%	+15,880	34,765	586

Most members gained

Artificial Intelligence & Machine Learning subreddits that gained the most members
#	Subreddit	Members gained	12-mo growth	Members	Commenters / mo
1	r/ClaudeAI	+856,683	+239%	1.22M	32,274
2	r/technology	+637,334	+3.2%	20.59M	96,836
3	r/ChatGPT	+498,132	+4.4%	11.7M	44,126
4	r/ArtificialInteligence	+367,315	+23%	1.96M	13,909
5	r/OpenAI	+352,267	+14%	2.89M	12,825
6	r/antiai	+315,278	+483%	380,575	50,713
7	r/LocalLLaMA	+300,883	+54%	854,807	16,757
8	r/GeminiAI	+255,349	+183%	395,146	11,994
9	r/AI_Agents	+241,025	+107%	467,004	8,972
10	r/singularity	+238,522	+6.3%	4.01M	21,653
11	r/StableDiffusion	+189,896	+22%	1.03M	9,664
12	r/artificial	+186,177	+16%	1.35M	7,110
13	r/ChatGPTPromptGenius	+182,715	+28%	825,839	613
14	r/Anthropic	+176,396	+319%	231,733	10,158
15	r/PromptEngineering	+165,510	+64%	424,420	1,829
16	r/LocalLLM	+157,908	+173%	249,034	10,555
17	r/RealOrAI	+148,609	+308%	196,860	3,469
18	r/grok	+144,445	+175%	226,863	5,437
19	r/generativeAI	+144,157	+566%	169,622	3,466
20	r/learnmachinelearning	+118,969	+21%	687,160	3,127
21	r/WritingWithAI	+104,895	+164%	168,772	2,654
22	r/ChatGPTPro	+103,396	+20%	618,877	1,364
23	r/aipromptprogramming	+101,967	+74%	239,667	521
24	r/CharacterAI	+101,854	+4.0%	2.64M	8,561
25	r/automation	+96,349	+68%	238,232	1,608

Most active Artificial Intelligence & Machine Learning subreddits

People who comment in a month, the average of the three months ending September 2026.

Most active Artificial Intelligence & Machine Learning subreddits
#	Subreddit	Commenters / mo	Posts / mo	Members
1	r/technology	96,836	3,648	20.59M
2	r/antiai	50,713	6,642	380,575
3	r/ChatGPT	44,126	6,320	11.7M
4	r/aislop	34,470	2,761	100,211
5	r/ClaudeAI	32,274	9,395	1.22M
6	r/isthisAI	28,026	2,513	447,462
7	r/ClaudeCode	21,923	6,572	458,034
8	r/singularity	21,653	1,897	4.01M
9	r/codex	17,398	7,045	222,199
10	r/LocalLLaMA	16,757	2,870	854,807
11	r/TechGawker	16,172	447	55,544
12	r/ArtificialInteligence	13,909	3,855	1.96M
13	r/aiwars	13,001	4,020	173,599
14	r/OpenAI	12,825	3,556	2.89M
15	r/GeminiAI	11,994	3,383	395,146
16	r/LocalLLM	10,555	3,717	249,034
17	r/Anthropic	10,158	1,709	231,733
18	r/FacebookAIslop	10,047	999	97,481
19	r/claude	9,857	3,035	200,285
20	r/StableDiffusion	9,664	3,311	1.03M
21	r/isitAI	9,616	1,302	46,240
22	r/AI_Agents	8,972	3,775	467,004
23	r/CharacterAI	8,561	4,958	2.64M
24	r/Ai_art_is_not_art	7,668	1,748	57,727
25	r/artificial	7,110	1,852	1.35M

How these lists are made

Members are the member counts measured in October 2026.
Activity (commenters and posts per month) is the average of the three months ending September 2026. Posts by known bots are not counted.
12-month growth compares members now with members a year earlier. A subreddit is ranked by growth only if it already had at least 18,251 members a year ago (the median for subreddits with a known growth), so brand-new communities don't top the list from a base of zero. Subreddits with more monthly active users than 0.808 per member, a sign of inflated activity, are left out of the growth and activity lists.
NSFW communities are excluded: those Reddit marks as 18+, those where most posts are NSFW, and the Adult Content topic.
Topics follow Reddit's own community categories.
The lists are rebuilt every month. Each list shows the top 25 (100 for the largest subreddits overall). Download all lists as CSV (free to reuse under CC BY 4.0, with a link to this page).

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