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AI Infrastructure

$12.9BTotal Funding
75Companies
1.7KHN Mentions
1.1BDownloads/mo
14.0KAvg GitHub Stars
0%Avg Developer Sentiment (27 companies)

AI-Buzz tracks 75 AI Infrastructure companies with $12.9B in combined funding and 1.1B monthly package downloads. Metrics update daily from GitHub, npm, PyPI, and Hacker News.

Leading companies include Pydantic (Samuel Colvin), AgentOps, vLLM. Average developer sentiment across the category is 0% positive.

Pydantic (Samuel Colvin) leads with a Developer Momentum Index score of 31/100. 68 of 75 companies have active package downloads on npm or PyPI. Compare companies head-to-head on the comparison page, or see the full rankings for cross-category context.

Category Trends

View:

Hacker News Mentions

Total HN mentions across all companies in this category over time

6709331,1971,4601,723Feb 1Mar 3
90-day trend↑ +157.2%

HN Mentions grew from 670 to 1,723 (+157.2%) over the last 90 days.

View data table
Datehn mentions
Feb 1, 2026670
Mar 3, 20261,723

Total Funding

Cumulative funding raised by companies in this category over time

$1.0B$4.0B$7.0B$9.9B$12.9BFeb 1Mar 3
90-day trend↑ +1133.9%

Total Funding grew from $1.0B to $12.9B (+1133.9%) over the last 90 days.

View data table
Datefunding
Feb 1, 2026$1.0B
Mar 3, 2026$12.9B

Data validation library and AI agent framework

DMI: 31
Funding: $17M
Downloads (30d): 650.6M
HN Mentions (30d): 14

Observability and testing platform for AI agents

DMI: 28
Funding: $3M
Downloads (30d): 633.3K
HN Mentions (30d): 6

Fast LLM inference engine. High-throughput serving for LLMs.

DMI: 27
Funding: -
Downloads (30d): 5.6M
HN Mentions (30d): 86

Open-source vector database. GraphQL and REST APIs for AI search.

DMI: 23
Funding: $67M
Downloads (30d): 31.1M
HN Mentions (30d): 10

LLM observability platform. Monitor AI applications in production.

DMI: 20
Funding: $500K
Downloads (30d): 7.8K
HN Mentions (30d): 7

Open-source vector database. Scalable similarity search engine.

DMI: 19
Funding: $113M
Downloads (30d): 20.0M
HN Mentions (30d): 8

Ray framework company. Distributed computing for ML workloads.

DMI: 19
Funding: $260M
Downloads (30d): 56.1M

Open-source LLM observability platform. Monitor and debug AI applications.

DMI: 19
Funding: $5M
Downloads (30d): 16.6M
HN Mentions (30d): 23

Cloud platform for running AI workloads. Serverless ML infrastructure.

DMI: 18
Funding: $23M
Downloads (30d): 11.9M
HN Mentions (30d): 201

AI compute company with wafer-scale chips

DMI: 18
Funding: $710M
Downloads (30d): 1.6M
HN Mentions (30d): 145
Show all 75 companies (65 more)

Open-source vector similarity search engine. Fast and scalable.

DMI: 18
Funding: $30M
Downloads (30d): 14.9M
HN Mentions (30d): 31

Structured output extraction from LLMs

DMI: 18
Funding: -
Downloads (30d): 8.7M
HN Mentions (30d): 40

Fast inference for LLMs. Hardware-accelerated AI inference platform.

DMI: 18
Funding: $650M
Downloads (30d): 13.0M
HN Mentions (30d): 144

Open-source vector database. Embeddings database for AI applications.

DMI: 18
Funding: $18M
Downloads (30d): 13.9M
HN Mentions (30d): 37

AI tables platform bringing ML models inside existing databases

DMI: 17
Funding: $51M
Downloads (30d): 13.6K

ML experiment tracking and model management platform.

DMI: 17
Funding: $250M
Downloads (30d): 21.9M
HN Mentions (30d): 2

Data labeling and AI infrastructure platform

DMI: 16
Funding: $1.6B
Downloads (30d): 71.4K
HN Mentions (30d): 27

Open-source embeddings and data visualization

DMI: 16
Funding: $17M
Downloads (30d): 38.7K

AI gateway for routing and observing calls across LLM providers

DMI: 16
Funding: $3M
Downloads (30d): 881.5K

Programming framework for LLM pipelines (Stanford NLP)

DMI: 16
Funding: -
Downloads (30d): 5.0M
HN Mentions (30d): 15

AI testing and evaluation platform. Test LLM applications at scale.

DMI: 16
Funding: $500K
Downloads (30d): 864

Data and AI platform, creator of MLflow and Dolly

DMI: 16
Funding: $4.0B
Downloads (30d): 86.8M
HN Mentions (30d): 30

ETL for unstructured data preprocessing

DMI: 16
Funding: $105M
Downloads (30d): 4.7M
HN Mentions (30d): 72

Open-source model inference platform. Fast and cost-effective.

DMI: 16
Funding: $229M
Downloads (30d): 3.3M
HN Mentions (30d): 17

Enterprise AI evaluation and observability

DMI: 16
Funding: $124M
Downloads (30d): 5.6M
HN Mentions (30d): 5

Distributed training framework for large-scale AI models

DMI: 16
Funding: $28M
Downloads (30d): 12.5K

ML and LLM observability platform for monitoring and evaluation

DMI: 16
Funding: $61M
Downloads (30d): 663.4K
HN Mentions (30d): 1

Computer vision platform for dataset management and model deployment

DMI: 16
Funding: $22M
Downloads (30d): 4.0M
HN Mentions (30d): 1

Vector database for AI applications. Powers semantic search and RAG.

DMI: 16
Funding: $138M
Downloads (30d): 3.4M
HN Mentions (30d): 30

Framework for validating and structuring LLM outputs

DMI: 16
Funding: $8M
Downloads (30d): 228.6K
HN Mentions (30d): 1

Cloud sandboxes for securely executing AI-generated code

DMI: 15
Funding: $12M
Downloads (30d): 3.9M
HN Mentions (30d): 20

Serverless vector database built on Lance columnar format

DMI: 15
Funding: $10M
Downloads (30d): 5.8M
HN Mentions (30d): 20

ML experiment tracking and data versioning with DVC and CML

DMI: 15
Funding: $25M
Downloads (30d): 2.0M
HN Mentions (30d): 146

Data-centric AI platform for training data

DMI: 15
Funding: $189M
Downloads (30d): 495.8K

Workflow orchestration framework for data and ML pipelines

DMI: 15
Funding: $46M
Downloads (30d): 10.1M
HN Mentions (30d): 11

Tensor-based vector search engine for multimodal AI applications

DMI: 15
Funding: $18M
Downloads (30d): 152.2K

Framework for evaluating retrieval augmented generation pipelines

DMI: 15
Funding: $3M
Downloads (30d): 1.1M
HN Mentions (30d): 2

Open-source NLP/LLM framework for search and RAG

DMI: 15
Funding: $46M
Downloads (30d): 586.3K

ML model serving platform with GPU infrastructure for inference

DMI: 15
Funding: $60M
Downloads (30d): 574.9K
HN Mentions (30d): 8

Fast and efficient generative AI inference platform

DMI: 15
Funding: $77M
Downloads (30d): 7.4M
HN Mentions (30d): 11

Deep learning framework and AI development platform

DMI: 15
Funding: $59M
Downloads (30d): 5.9M
HN Mentions (30d): 1

Headless browser infrastructure for AI agents and web automation

DMI: 15
Funding: $28M
Downloads (30d): 2.5M
HN Mentions (30d): 1

Enterprise AI platform for automated machine learning and deployment

DMI: 15
Funding: $984M
Downloads (30d): 360.6K

Data quality framework for validating and profiling data pipelines

DMI: 14
Funding: $61M
Downloads (30d): 27.1M
HN Mentions (30d): 1

Data orchestration platform for building observable data pipelines

DMI: 14
Funding: $50M
Downloads (30d): 5.2M
HN Mentions (30d): 13

Structured text generation ensuring LLM outputs follow schemas

DMI: 14
Funding: $3M
Downloads (30d): 1.3M

LLM evaluation framework with the DeepEval testing library

DMI: 14
Funding: $500K
Downloads (30d): 2.0M

Data quality tools for finding and fixing errors in ML datasets

DMI: 14
Funding: $30M
Downloads (30d): 52.3K

Open-source toolkit for building computer vision datasets

DMI: 14
Funding: $45M
Downloads (30d): 186.8K

Open-source ML monitoring and observability framework

DMI: 14
Funding: $2M
Downloads (30d): 1.2M

Open-source platform for building and deploying ML model services

DMI: 14
Funding: $9M
Downloads (30d): 202.0K
HN Mentions (30d): 3

Open-source machine learning platform for enterprise AI applications

DMI: 14
Funding: $241M
Downloads (30d): 235.9K

Production-ready LLM serving. Optimized inference for Hugging Face models.

DMI: 14
Funding: -
HN Mentions (30d): 180

Open-source MLOps platform for experiment tracking and orchestration

DMI: 14
Funding: $11M
Downloads (30d): 748.9K
HN Mentions (30d): 1

Data-centric AI platform for programmatic data labeling and curation

DMI: 14
Funding: $138M
Downloads (30d): 50.1K
HN Mentions (30d): 1

Testing and monitoring framework for ML models and LLM apps

DMI: 14
Funding: $14M
Downloads (30d): 44.0K

Automated evaluation and testing platform for LLM applications

DMI: 13
Funding: $20M
Downloads (30d): 52.2K

LLM evaluation and observability platform for AI applications

DMI: 13
Funding: $68M
Downloads (30d): 3.1K

ML experiment management platform for tracking and comparing models

DMI: 13
Funding: $57M
Downloads (30d): 955.7K
HN Mentions (30d): 2

AI inference platform for deploying models with minimal code

DMI: 13
Funding: $10M
Downloads (30d): 642.0K

LLM operations platform for prompt management and evaluation

DMI: 13
Funding: $8M
Downloads (30d): 12.0K
HN Mentions (30d): 1

Feature platform for building real-time ML applications

DMI: 12
Funding: $160M
Downloads (30d): 1.6M

GPU cloud platform for AI inference and training workloads

DMI: 11
Funding: $20M
Downloads (30d): 683.2K
HN Mentions (30d): 8

Collaborative data science and ML platform for enterprise teams

DMI: 11
Funding: $847M
Downloads (30d): 49

Fine-tuning platform for deploying specialized language models

DMI: 10
Funding: $28M
Downloads (30d): 4.9K
HN Mentions (30d): 1

Synthetic data platform for privacy-safe AI model training

DMI: 10
Funding: $66M
Downloads (30d): 2.3K

AI chip and systems company building custom silicon for enterprise

DMI: 10
Funding: $1.1B
HN Mentions (30d): 5

GPU cloud platform and on-premise infrastructure for training and serving ML models.

DMI: 9
Funding: -
HN Mentions (30d): 227

Experiment tracking and model registry for ML teams

DMI: 8
Funding: $10M
Downloads (30d): 443.6K
HN Mentions (30d): 2

Enterprise platform for building specialized RAG agents, founded by the creators of RAG.

DMI: 8
Funding: -
HN Mentions (30d): 1

Cloud security platform using AI for threat detection and posture management.

DMI: 6
Funding: -
HN Mentions (30d): 27

AI security platform for model validation and real-time threat protection. Acquired by Cisco 2024.

DMI: 6
Funding: -

GPU cloud infrastructure provider specializing in AI and HPC workloads.

DMI: 6
Funding: -
HN Mentions (30d): 11

TypeScript toolkit for building AI-powered applications

Funding: -
Downloads (30d): 36.2M
HN Mentions (30d): 25

Open-source Python library for building ML demos

Funding: $394M
Downloads (30d): 12.3M

Frequently Asked Questions

What are the top AI Infrastructure AI companies?

The leading AI Infrastructure AI companies by developer adoption include Pydantic (Samuel Colvin) (DMI 31), AgentOps (DMI 28), vLLM (DMI 27). AI-Buzz tracks 75 companies in this category using the Developer Mindshare Index, which combines package downloads, GitHub activity, Hacker News discussion, and search demand.

How much funding have AI Infrastructure AI companies raised?

AI Infrastructure AI companies have raised $12.9B in total across 75 companies tracked by AI-Buzz. The average funding per company is $172M. This covers all funding stages from seed to late-stage rounds.

How popular are AI Infrastructure AI tools with developers?

AI Infrastructure AI tools receive 1.1B package downloads per month across npm and PyPI. This measures real developer adoption - not just interest - making it one of the strongest signals for evaluating AI companies.

What is the average developer sentiment for AI Infrastructure AI companies?

The average developer sentiment for AI Infrastructure AI companies is 0% positive, based on Hacker News discussions across 27 companies with sufficient sample sizes. AI-Buzz calculates sentiment from comment-level analysis of HN threads.

Which companies lead in AI Infrastructure?

The top AI Infrastructure companies by Developer Mindshare Index are: Pydantic (Samuel Colvin)-650.6M downloads/mo-$17M raised; AgentOps-633.3K downloads/mo-$3M raised; vLLM-5.6M downloads/mo. See the full list of 75 companies with daily-updated metrics on AI-Buzz.

Explore all AI Infrastructure articles on AI-Buzz
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Cerebras PyPI Downloads Surge 27%: A Leading AI Indicator

2 min read

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Dashboard of the MIRAGE benchmark evaluating a multimodal AI, showing a high perception score but critical reasoning errors.

AI Devs Drop Chroma for Weaviate, Qdrant in Production

3 min read

Chroma was the early default for developers building RAG pipelines. It was simple, open-source, and got out of the way. Now, download data tracked by AI-Buzz shows its npm package lost 15.4% of monthly downloads in a single month, while Weaviate and Qdrant grew 6.0% and 6.4%...

AI Devs Shift to Qdrant, Weaviate for Performance DBs

3 min read

Package download data from AI-Buzz covering the past 30 days shows Chroma losing ground in both major developer ecosystems while Weaviate and Qdrant continue to grow. The numbers are unambiguous: Chroma's npm downloads dropped 15.4% and its PyPI downloads fell 2.8%, while both...

Line chart showing Qdrant's developer adoption growth versus Chroma's decline in the open-source vector database market.

Qdrant Gains on Chroma in Vector DB Adoption, Data Shows

3 min read

Download numbers for two of the most widely used open-source vector databases are moving in opposite directions. Over the past 30 days, Qdrant 's PyPI package grew 6.4% month-over-month, its npm package grew 4.2%, and its AI-Buzz Momentum Score sits at 56.0. Chroma 's npm...

Bar chart of vector database PyPI downloads showing Milvus at -25.2% vs Qdrant at +49.2% and Chroma at +33.0% growth.

Vector DB Market Shifts: Qdrant, Chroma Challenge Milvus

6 min read

The vector database market is splitting in two. On one side: enterprise-grade distributed systems built for billion-vector scale. On the other: developer-first tools designed so that spinning up semantic search is as easy as pip install. This month’s data makes clear which side developers are choosing - and the answer should concern anyone who bet

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