AIStackWatch

AIStackWatch Companies

Companies behind the stack

A working map of the AI infrastructure, model, coding, and observability companies that builders keep seeing in production decisions.

Seed9
Series B9
Series C8
Private5
Public5
Series A5
Series D4
Subsidiary2

Agno

Seed

US

Full-stack framework for building multi-agent systems.

Founded
2022
Team
1-10
AgentsFrameworkOpen Source

Aider

Bootstrapped

Global

AI pair programming in your terminal.

Founded
2023
Team
1-10
AI CodingOpen SourceCLI

Anthropic

Series F

US

AI safety company building reliable, interpretable, steerable AI systems.

Founded
2021
Team
501-1000
Foundation ModelAI SafetyLLM API

Anysphere

Series C

US

Building the AI-first code editor, Cursor.

Founded
2022
Team
51-200
AI CodingDeveloper ToolsEditor

Arize AI

Series C

US

The AI observability and LLM evaluation platform.

Founded
2020
Team
51-200
ObservabilityEvalsMl Platform

Braintrust

Series A

US

The enterprise-grade stack for building AI products.

Founded
2023
Team
11-50
EvalsObservabilityPrompt Dev

Cline

Seed

US

The open-source autonomous coding agent for VS Code.

Founded
2024
Team
1-10
AI CodingAgentsOpen Source

Codeium

Series C

US

Maker of Windsurf, the agentic AI code editor.

Founded
2021
Team
51-200
AI CodingDeveloper ToolsEditor

Cognition

Series A

US

Builder of Devin, an autonomous AI software engineer.

Founded
2023
Team
11-50
AI CodingAgentsAutonomous

Cohere

Series D

CA

The foundation model platform for enterprise AI.

Founded
2019
Team
201-500
Foundation ModelLLM APIEnterprise

Continue

Seed

US

The leading open-source AI code assistant.

Founded
2023
Team
1-10
AI CodingOpen SourceDeveloper Tools

CrewAI

Series A

US

The leading multi-agent platform.

Founded
2023
Team
11-50
AgentsFrameworkOrchestration

Databricks

Private

US

The data and AI company.

Founded
2013
Team
5001+
Data PlatformMl PlatformEnterprise

DeepSeek

Private

CN

Open-weight frontier reasoning models from China.

Founded
2023
Team
51-200
Foundation ModelOpen WeightsReasoning

ElevenLabs

Series C

US

The most realistic AI voice technology.

Founded
2022
Team
51-200
VoiceTtsMultimodal

Fireworks AI

Series B

US

The fastest inference platform for open-source and custom models.

Founded
2022
Team
51-200
InferenceDeveloper Tools

GitHub

Subsidiary

US

The world's developer platform.

Founded
2008
Team
1001-5000
Developer PlatformAI CodingCollaboration

Google DeepMind

Subsidiary

GB

Solving intelligence to advance science and benefit humanity.

Founded
2010
Team
1001-5000
Foundation ModelResearchLLM API

Groq

Series D

US

The LPU inference engine for real-time AI.

Founded
2016
Team
201-500
InferenceChipHardware

Helicone

Seed

US

The open-source LLM observability platform.

Founded
2023
Team
1-10
ObservabilityEvalsOpen Source

Hugging Face

Series D

US

The AI community building the future.

Founded
2016
Team
201-500
CommunityModel HubOpen Source

Inngest

Series A

US

The durable execution platform for reliable workflows and AI agents.

Founded
2021
Team
11-50
Durable ExecutionAgentsInfra

LangChain

Series B

US

Build, run, and manage applications with LLMs.

Founded
2022
Team
51-200
FrameworkAgentsObservability

Latitude

Seed

ES

The open-source prompt engineering platform.

Founded
2023
Team
1-10
Prompt DevOpen SourceEvals

LM Studio

Private

US

Discover, download, and run local LLMs.

Founded
2023
Team
1-10
Local LLMDesktopInference

Meta

Public

US

Building the future of social technology and open AI.

Founded
2004
Team
5001+
Foundation ModelOpen WeightsConsumer

Microsoft

Public

US

Global software and cloud platform company.

Founded
1975
Team
5001+
CloudEnterpriseAI Platform

Mistral AI

Series B

FR

Open, portable, frontier AI for developers and enterprises.

Founded
2023
Team
51-200
Foundation ModelOpen WeightsLLM API

Modal

Series B

US

High-performance AI infrastructure, reinvented.

Founded
2021
Team
51-200
ServerlessGPU CloudInfra

Netlify

Series D

US

The composable web platform for modern teams.

Founded
2014
Team
201-500
CloudFrontendDeveloper Tools

Ollama

Seed

US

Get up and running with large language models, locally.

Founded
2023
Team
1-10
Local LLMOpen SourceInference

OpenAI

Private

US

Creating artificial general intelligence that benefits all of humanity.

Founded
2015
Team
1001-5000
Foundation ModelLLM APIConsumer AI

Perplexity

Series C

US

The answer engine for accurate, trusted, real-time answers.

Founded
2022
Team
51-200
SearchConsumer AILLM API

Pinecone

Series B

US

The vector database for building AI applications.

Founded
2019
Team
51-200
Vector DBRAGInfra

PromptLayer

Seed

US

The first platform built for prompt engineers.

Founded
2022
Team
1-10
Prompt DevObservabilityEvals

Replicate

Series B

US

Run and fine-tune open-source AI models with an API.

Founded
2019
Team
11-50
InferenceModel HostingDeveloper Tools

Stability AI

Private

GB

Activating humanity's potential through generative AI.

Founded
2019
Team
51-200
Generative MediaImageOpen Weights

Supabase

Series C

US

The open-source Firebase alternative.

Founded
2020
Team
51-200
BackendDatabaseOpen Source

Together AI

Series B

US

The AI acceleration cloud for open-source models.

Founded
2022
Team
51-200
InferenceGPU CloudOpen Weights

turbopuffer

Seed

US

Serverless vector and full-text search, built on object storage.

Founded
2023
Team
1-10
Vector DBRAGServerless

Vercel

Series E

US

The frontend cloud and maker of the AI SDK.

Founded
2015
Team
501-1000
CloudFrontendDeveloper Tools

Weaviate

Series B

NL

Open-source AI-native vector database.

Founded
2019
Team
51-200
Vector DBRAGOpen Source

xAI

Series C

US

Understand the true nature of the universe.

Founded
2023
Team
201-500
Foundation ModelLLM API

Zed Industries

Series B

US

Code at the speed of thought.

Founded
2021
Team
11-50
AI CodingEditorDeveloper Tools