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PyPI

Monthly PyPI download counts for AI Python packages: model-vendor SDKs, agent frameworks, inference and serving, model tooling, and Model Context Protocol libraries, with all-PyPI downloads as a baseline and a derived vendor share. pypistats serves about 180 days, so this history begins in January 2026 and grows forward.

cadence · monthly 39 series updated 21 Oct 2026 pypistats.org ↗
release markers

All of PyPI (total downloads)

126B +182.8% 8 mo as of Sep 2026
020.0B40.0B60.0B80.0B100B120B140B160B180B2026GPT-6 Astra
click a month to drill into daily png csv
This line counts every package on PyPI, not only AI packages. It is a control: the AI lines are a small part of it.

Model-vendor SDKs

openai

293M +354.7% 8 mo as of Sep 2026
0100M200M300M400M2026GPT-6 Astra
click a month to drill into daily png csv
Developers also use this package with other vendors, because those vendors copy OpenAI's API. The true OpenAI number is lower.

anthropic

146M +651.4% 8 mo as of Sep 2026
050.0M100M150M200M2026GPT-6 Astra
click a month to drill into daily png csv

google-generativeai

7.4M +13.2% 8 mo as of Sep 2026
02.0M4.0M6.0M8.0M10.0M12.0M14.0M16.0M18.0M2026GPT-6 Astra
click a month to drill into daily png csv
This is Google's old Gemini SDK. Developers moved to the new google-genai, so the fall here shows a move, not less use of Google.

mistralai

17.2M +294.2% 8 mo as of Sep 2026
010.0M20.0M30.0M40.0M50.0M2026GPT-6 Astra
click a month to drill into daily png csv

cohere

10.6M +115.0% 8 mo as of Sep 2026
010.0M20.0M30.0M40.0M2026GPT-6 Astra
click a month to drill into daily png csv

google-genai

138M +210.7% 8 mo as of Sep 2026
050.0M100M150M200M250M300M2026GPT-6 Astra
click a month to drill into daily png csv

xai-sdk

4.7M +882.7% 8 mo as of Sep 2026
02.0M4.0M6.0M8.0M2026GPT-6 Astra
click a month to drill into daily png csv

perplexityai

1.0M +569.6% 8 mo as of Sep 2026
0200k400k600k800k1.0M1.2M2026GPT-6 Astra
click a month to drill into daily png csv

dashscope

2.6M +660.4% 8 mo as of Sep 2026
0500k1.0M1.5M2.0M2.5M3.0M3.5M2026GPT-6 Astra
click a month to drill into daily png csv
Alibaba's DashScope SDK calls every model that Alibaba hosts, not only Qwen. The true Qwen number is lower.

Agent frameworks & SDKs

openai-agents

12.5M +210.7% 8 mo as of Sep 2026
05.0M10.0M15.0M20.0M25.0M30.0M35.0M2026GPT-6 Astra
click a month to drill into daily png csv

langchain

170M +69.4% 8 mo as of Sep 2026
050.0M100M150M200M250M300M2026GPT-6 Astra
click a month to drill into daily png csv

langchain-core

146M +305.7% 8 mo as of Sep 2026
020.0M40.0M60.0M80.0M100M120M140M160M180M2026GPT-6 Astra
click a month to drill into daily png csv

langgraph

45.0M +236.1% 8 mo as of Sep 2026
010.0M20.0M30.0M40.0M50.0M60.0M70.0M2026GPT-6 Astra
click a month to drill into daily png csv

llama-index

3.1M +0.9% 8 mo as of Sep 2026
02.0M4.0M6.0M8.0M10.0M12.0M2026GPT-6 Astra
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instructor

8.6M +118.5% 8 mo as of Sep 2026
05.0M10.0M15.0M20.0M25.0M2026GPT-6 Astra
click a month to drill into daily png csv

claude-agent-sdk

29.9M ×25 8 mo as of Sep 2026
05.0M10.0M15.0M20.0M25.0M30.0M2026GPT-6 Astra
click a month to drill into daily png csv

crewai

2.4M +45.9% 8 mo as of Sep 2026
05.0M10.0M15.0M20.0M25.0M30.0M2026GPT-6 Astra
click a month to drill into daily png csv

pydantic-ai

5.5M +55.8% 8 mo as of Sep 2026
010.0M20.0M30.0M40.0M2026GPT-6 Astra
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dspy

5.3M +244.7% 8 mo as of Sep 2026
01.0M2.0M3.0M4.0M5.0M6.0M7.0M2026GPT-6 Astra
click a month to drill into daily png csv

smolagents

433k +260.1% 8 mo as of Sep 2026
0100k200k300k400k500k600k2026GPT-6 Astra
click a month to drill into daily png csv

Inference & serving

litellm

90.8M +290.8% 8 mo as of Sep 2026
0100M200M300M400M500M600M700M2026GPT-6 Astra
click a month to drill into daily png csv

ollama

12.8M +371.0% 8 mo as of Sep 2026
05.0M10.0M15.0M20.0M2026GPT-6 Astra
click a month to drill into daily png csv

vllm

1.9M +58.3% 8 mo as of Sep 2026
02.0M4.0M6.0M8.0M10.0M2026GPT-6 Astra
click a month to drill into daily png csv

groq

16.6M +453.3% 8 mo as of Sep 2026
05.0M10.0M15.0M20.0M25.0M2026GPT-6 Astra
click a month to drill into daily png csv

together

1.5M +48.1% 8 mo as of Sep 2026
02.0M4.0M6.0M8.0M10.0M12.0M2026GPT-6 Astra
click a month to drill into daily png csv

Model tooling

transformers

95.0M +114.0% 8 mo as of Sep 2026
020.0M40.0M60.0M80.0M100M120M140M160M180M2026GPT-6 Astra
click a month to drill into daily png csv

huggingface-hub

231M +202.5% 8 mo as of Sep 2026
0100M200M300M400M2026GPT-6 Astra
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sentence-transformers

22.9M +203.0% 8 mo as of Sep 2026
05.0M10.0M15.0M20.0M25.0M30.0M2026GPT-6 Astra
click a month to drill into daily png csv

tiktoken

178M +414.2% 8 mo as of Sep 2026
050.0M100M150M200M250M2026GPT-6 Astra
click a month to drill into daily png csv

chromadb

6.6M +37.4% 8 mo as of Sep 2026
02.0M4.0M6.0M8.0M10.0M12.0M14.0M2026GPT-6 Astra
click a month to drill into daily png csv

Model Context Protocol

fastmcp needs mcp, so every fastmcp install also counts as an mcp install. Do not add the two charts together.

mcp

230M +707.8% 8 mo as of Sep 2026
050.0M100M150M200M250M300M2026GPT-6 Astra
click a month to drill into daily png csv

fastmcp

53.1M +538.1% 8 mo as of Sep 2026
020.0M40.0M60.0M80.0M100M2026GPT-6 Astra
click a month to drill into daily png csv

Model-vendor share (official Python SDKs)

A vendor's share is its downloads divided by the total of all six SDKs. ⚠ Developers also use `openai` with other vendors, so the true OpenAI share is lower.

OpenAI share derived

47.5% +12.4% 8 mo as of Sep 2026
010203040502026GPT-6 Astra
png csv

Anthropic share derived

23.7% +83.5% 8 mo as of Sep 2026
05101520252026GPT-6 Astra
png csv

Google share derived

23.6% −38.7% 8 mo as of Sep 2026
010203040502026GPT-6 Astra
png csv

xAI share derived

0.75% +102.7% 8 mo as of Sep 2026
00.20.40.60.812026GPT-6 Astra
png csv

Mistral share derived

2.8% −3.5% 8 mo as of Sep 2026
0123452026GPT-6 Astra
png csv

Cohere share derived

1.7% −46.6% 8 mo as of Sep 2026
01234562026GPT-6 Astra
png csv

Figures

PyPI: latest figure, change, range and coverage of each series
SeriesLatestChangeMinMaxCoverage
openai293M+354.7% 8 mo64.4M427MJan 2026 — Sep 2026
anthropic146M+651.4% 8 mo19.5M197MJan 2026 — Sep 2026
openai-agents12.5M+210.7% 8 mo4.0M35.8MJan 2026 — Sep 2026
langchain170M+69.4% 8 mo101M328MJan 2026 — Sep 2026
langchain-core146M+305.7% 8 mo36.1M176MJan 2026 — Sep 2026
langgraph45.0M+236.1% 8 mo13.4M72.6MJan 2026 — Sep 2026
llama-index3.1M+0.9% 8 mo3.0M12.6MJan 2026 — Sep 2026
litellm90.8M+290.8% 8 mo23.2M684MJan 2026 — Sep 2026
instructor8.6M+118.5% 8 mo3.9M26.8MJan 2026 — Sep 2026
transformers95.0M+114.0% 8 mo44.4M186MJan 2026 — Sep 2026
huggingface-hub231M+202.5% 8 mo76.2M472MJan 2026 — Sep 2026
sentence-transformers22.9M+203.0% 8 mo7.6M32.1MJan 2026 — Sep 2026
tiktoken178M+414.2% 8 mo34.7M265MJan 2026 — Sep 2026
chromadb6.6M+37.4% 8 mo4.8M14.8MJan 2026 — Sep 2026
ollama12.8M+371.0% 8 mo2.7M23.2MJan 2026 — Sep 2026
google-generativeai7.4M+13.2% 8 mo6.5M17.4MJan 2026 — Sep 2026
mistralai17.2M+294.2% 8 mo4.4M51.6MJan 2026 — Sep 2026
cohere10.6M+115.0% 8 mo4.9M46.4MJan 2026 — Sep 2026
All of PyPI (total downloads)126B+182.8% 8 mo44.7B184BJan 2026 — Sep 2026
google-genai138M+210.7% 8 mo44.4M298MJan 2026 — Sep 2026
xai-sdk4.7M+882.7% 8 mo474k9.1MJan 2026 — Sep 2026
perplexityai1.0M+569.6% 8 mo155k1.2MJan 2026 — Sep 2026
dashscope2.6M+660.4% 8 mo338k3.5MJan 2026 — Sep 2026
claude-agent-sdk29.9M×25 8 mo1.2M31.6MJan 2026 — Sep 2026
crewai2.4M+45.9% 8 mo1.7M28.5MJan 2026 — Sep 2026
pydantic-ai5.5M+55.8% 8 mo3.5M42.8MJan 2026 — Sep 2026
dspy5.3M+244.7% 8 mo1.6M7.3MJan 2026 — Sep 2026
smolagents433k+260.1% 8 mo120k660kJan 2026 — Sep 2026
mcp230M+707.8% 8 mo28.5M330MJan 2026 — Sep 2026
fastmcp53.1M+538.1% 8 mo8.3M96.2MJan 2026 — Sep 2026
vllm1.9M+58.3% 8 mo1.2M10.1MJan 2026 — Sep 2026
groq16.6M+453.3% 8 mo3.0M28.0MJan 2026 — Sep 2026
together1.5M+48.1% 8 mo1.0M12.3MJan 2026 — Sep 2026
OpenAI share47.5%+12.4% 8 mo33.5%47.5%Jan 2026 — Sep 2026
Anthropic share23.7%+83.5% 8 mo10.4%23.7%Jan 2026 — Sep 2026
Google share23.6%−38.7% 8 mo23.6%50.5%Jan 2026 — Sep 2026
xAI share0.75%+102.7% 8 mo0.37%1.1%Jan 2026 — Sep 2026
Mistral share2.8%−3.5% 8 mo2.3%5.6%Jan 2026 — Sep 2026
Cohere share1.7%−46.6% 8 mo1.7%5.7%Jan 2026 — Sep 2026
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