Stack Overflow
New questions per month on Stack Overflow and across the Stack Exchange network, since 2015: tags for LLMs and for the earlier machine-learning wave, non-AI control tags, other Stack Exchange sites, answers, and derived shares.
Control tags (non-AI)
These tags are not about AI. They are a control, and they fall too, so fashion in one ecosystem cannot explain the decline.
python
125 −81.4% yr as of Sep 2026
javascript
60 −78.8% yr as of Sep 2026
reactjs
12 −91.9% yr as of Sep 2026
java
38 −87.1% yr as of Sep 2026
c#
52 −81.6% yr as of Sep 2026
sql
19 −73.2% yr as of Sep 2026
html
39 −70.2% yr as of Sep 2026
android
49 −85.1% yr as of Sep 2026
excel
10 −89.4% yr as of Sep 2026
git
20 −64.9% yr as of Sep 2026
docker
8 −87.7% yr as of Sep 2026
Answers
Other Stack Exchange sites
Mathematics
696 −62.4% yr as of Sep 2026
Ask Ubuntu
234 −56.3% yr as of Sep 2026
Super User
146 −66.0% yr as of Sep 2026
Server Fault
51 −74.5% yr as of Sep 2026
Unix & Linux
82 −70.7% yr as of Sep 2026
Physics
243 −38.9% yr as of Sep 2026
TeX / LaTeX
184 −63.3% yr as of Sep 2026
Cross Validated (stats)
114 −51.1% yr as of Sep 2026
Electrical Engineering
168 −62.4% yr as of Sep 2026
MathOverflow
272 −41.0% yr as of Sep 2026
Geographic Information Systems
49 −69.6% yr as of Sep 2026
Database Administrators
47 −46.0% yr as of Sep 2026
Ask Different (Apple)
43 −61.6% yr as of Sep 2026
English Language Learners
69 −41.5% yr as of Sep 2026
English Language & Usage
44 −36.2% yr as of Sep 2026
Code Review
31 −48.3% yr as of Sep 2026
Software Engineering
14 −48.1% yr as of Sep 2026
Artificial Intelligence SE
21 −22.2% yr as of Sep 2026
Data Science SE
9 −78.6% yr as of Sep 2026
AI tags — LLM wave
Stack Overflow creates a tag some months after the tool it names. In a tag's first year, part of the rise comes from people who learn the tag.
artificial-intelligence
3 −75.0% yr as of Sep 2026
openai-api
1 −91.7% yr as of Sep 2026
langchain
0 −100.0% yr as of Sep 2026
large-language-model
4 −69.2% yr as of Sep 2026
github-copilot
2 −71.4% yr as of Sep 2026
huggingface-transformers
2 −83.3% yr as of Sep 2026
ollama
0 −100.0% yr as of Sep 2026
rag
2 −75.0% yr as of Sep 2026
llama
1 −50.0% yr as of Sep 2026
google-gemini
3 −57.1% yr as of Sep 2026
AI tags — ML wave
AI tags — vendor (noise-level)
These tags peak at 1–9 questions a month. The flat line is the result; the small moves are random.
Network-wide
These lines add up 19 sites, about 85% of the network outside Stack Overflow. The API gives no total, so the true total is higher.
Derived
AI-tool tags (sum) derived
16 −79.7% yr as of Sep 2026
AI-tool questions, share of all derived
1.4% +10.6% yr as of Sep 2026
Answers per question derived
2.2 +37.4% yr as of Sep 2026
Figures
| Series | Latest | Change | Min | Max | Coverage |
|---|---|---|---|---|---|
| All questions | 1.1k | −81.7% yr | 1.1k | 202k | Jan 2015 — Sep 2026 |
| python | 125 | −81.4% yr | 125 | 29.3k | Jan 2015 — Sep 2026 |
| javascript | 60 | −78.8% yr | 60 | 23.9k | Jan 2015 — Sep 2026 |
| reactjs | 12 | −91.9% yr | 12 | 8.3k | Jan 2015 — Sep 2026 |
| All answers | 2.4k | −74.8% yr | 2.4k | 284k | Jan 2015 — Sep 2026 |
| Mathematics | 696 | −62.4% yr | 696 | 16.1k | Jan 2015 — Sep 2026 |
| Ask Ubuntu | 234 | −56.3% yr | 234 | 4.0k | Jan 2015 — Sep 2026 |
| Super User | 146 | −66.0% yr | 145 | 4.6k | Jan 2015 — Sep 2026 |
| Server Fault | 51 | −74.5% yr | 50 | 2.3k | Jan 2015 — Sep 2026 |
| Unix & Linux | 82 | −70.7% yr | 82 | 2.4k | Jan 2015 — Sep 2026 |
| Physics | 243 | −38.9% yr | 207 | 2.4k | Jan 2015 — Sep 2026 |
| TeX / LaTeX | 184 | −63.3% yr | 184 | 2.3k | Jan 2015 — Sep 2026 |
| Cross Validated (stats) | 114 | −51.1% yr | 94 | 2.3k | Jan 2015 — Sep 2026 |
| Electrical Engineering | 168 | −62.4% yr | 167 | 2.1k | Jan 2015 — Sep 2026 |
| MathOverflow | 272 | −41.0% yr | 272 | 1.1k | Jan 2015 — Sep 2026 |
| Geographic Information Systems | 49 | −69.6% yr | 40 | 1.6k | Jan 2015 — Sep 2026 |
| Database Administrators | 47 | −46.0% yr | 47 | 1.1k | Jan 2015 — Sep 2026 |
| Ask Different (Apple) | 43 | −61.6% yr | 43 | 1.4k | Jan 2015 — Sep 2026 |
| English Language Learners | 69 | −41.5% yr | 57 | 1.6k | Jan 2015 — Sep 2026 |
| English Language & Usage | 44 | −36.2% yr | 40 | 1.7k | Jan 2015 — Sep 2026 |
| Code Review | 31 | −48.3% yr | 25 | 926 | Jan 2015 — Sep 2026 |
| Software Engineering | 14 | −48.1% yr | 7 | 602 | Jan 2015 — Sep 2026 |
| Artificial Intelligence SE | 21 | −22.2% yr | 0 | 306 | Jan 2015 — Sep 2026 |
| Data Science SE | 9 | −78.6% yr | 6 | 660 | Jan 2015 — Sep 2026 |
| artificial-intelligence | 3 | −75.0% yr | 1 | 99 | Jan 2015 — Sep 2026 |
| machine-learning | 5 | −58.3% yr | 1 | 843 | Jan 2015 — Sep 2026 |
| openai-api | 1 | −91.7% yr | 0 | 163 | Jan 2020 — Sep 2026 |
| langchain | 0 | −100.0% yr | 0 | 139 | Jan 2022 — Sep 2026 |
| large-language-model | 4 | −69.2% yr | 0 | 109 | Jan 2022 — Sep 2026 |
| github-copilot | 2 | −71.4% yr | 0 | 15 | Jan 2021 — Sep 2026 |
| deep-learning | 2 | −75.0% yr | 2 | 520 | Jan 2015 — Sep 2026 |
| nlp | 1 | −80.0% yr | 0 | 310 | Jan 2015 — Sep 2026 |
| huggingface-transformers | 2 | −83.3% yr | 0 | 110 | Jun 2019 — Sep 2026 |
| pytorch | 0 | −100.0% yr | 0 | 494 | Jun 2016 — Sep 2026 |
| tensorflow | 2 | −85.7% yr | 0 | 1.5k | Jan 2015 — Sep 2026 |
| ollama | 0 | −100.0% yr | 0 | 26 | Jan 2023 — Sep 2026 |
| rag | 2 | −75.0% yr | 0 | 15 | Jun 2022 — Sep 2026 |
| llama | 1 | −50.0% yr | 0 | 37 | Jun 2022 — Sep 2026 |
| google-gemini | 3 | −57.1% yr | 0 | 35 | Jan 2023 — Sep 2026 |
| mistral-ai | 0 | — | 0 | 2 | Jan 2023 — Sep 2026 |
| anthropic | 0 | — | 0 | 1 | Nov 2022 — Sep 2026 |
| claude | 1 | 0.0% yr | 0 | 9 | Nov 2022 — Sep 2026 |
| java | 38 | −87.1% yr | 38 | 19.7k | Jan 2015 — Sep 2026 |
| c# | 52 | −81.6% yr | 52 | 14.0k | Jan 2015 — Sep 2026 |
| sql | 19 | −73.2% yr | 19 | 5.3k | Jan 2015 — Sep 2026 |
| html | 39 | −70.2% yr | 39 | 11.9k | Jan 2015 — Sep 2026 |
| android | 49 | −85.1% yr | 49 | 15.2k | Jan 2015 — Sep 2026 |
| excel | 10 | −89.4% yr | 10 | 3.1k | Jan 2015 — Sep 2026 |
| git | 20 | −64.9% yr | 14 | 1.4k | Jan 2015 — Sep 2026 |
| docker | 8 | −87.7% yr | 4 | 2.2k | Jan 2015 — Sep 2026 |
| Network excl. Stack Overflow | 2.5k | −58.3% yr | 2.5k | 43.2k | Jan 2015 — Sep 2026 |
| Whole network (incl. Stack Overflow) | 3.6k | −70.0% yr | 3.6k | 244k | Jan 2015 — Sep 2026 |
| AI-tool tags (sum) | 16 | −79.7% yr | 0 | 483 | Jan 2015 — Sep 2026 |
| AI-tool questions, share of all | 1.4% | +10.6% yr | 0% | 1.8% | Jan 2015 — Sep 2026 |
| Answers per question | 2.2 | +37.4% yr | 1.2 | 2.9 | Jan 2015 — Sep 2026 |