LangChain

Data & ML Infrastructure12 vendorsUpdated Nov 10, 20268 added, 1 removed langchain.com Subprocessor list

LangChain uses 12 subprocessors and infrastructure vendors, including AWS, Google Cloud and OpenAI, based on its public subprocessor list. Last checked Nov 10, 2026.

AI Stack · 6

Infrastructure · 6

AI Stack

Web Search

Parallel

28 companies

Web Search: Provides web search for AI-powered features

Model Serving

TypeSafe AI

46 companies

Inference: Inference provider for certain features (Filter Traces)

Baseten

81 companies

AI model inference: Provides LLM inference for AI-powered features

Fireworks AI

81 companies

AI model inference: Provides LLM inference for AI-powered features

Foundation Models

Anthropic

669 companies

AI model inference: Provides LLM inference for AI-powered features

OpenAI

823 companies

AI model inference: Provides LLM inference for AI-powered features

View their stack →

Infrastructure

Cloud & Networking

AWS

1307 companies

Cloud provider: AWS is LangChain's Cloud hosting provider and provides LLM inference for AI-powered features for applicable features and plans.

Google Cloud

1081 companies

Cloud provider: GCP is LangChain's Cloud hosting provider and provides LLM inference for AI-powered features for applicable features and plans.

Databases

ClickHouse

185 companies

Production Database: Production database

Supabase

73 companies

Database provider: Authentication and backend services for LangSmith

Billing & Payments

Stripe

741 companies

Payment Processing: To provide payment processing services for self-serve customers

CRM & Support

Pylon

126 companies

Customer Support Ticketing and Communication: To provide customer support ticketing and communication services

Model labs reached through vendors 2

LangChain does not list these model providers. Vendors on its list name them on their own subprocessor lists.

Hugging FacethroughBaseten
Inception LabsthroughParallel

Named on vendor websites 7

These vendors name LangChain as a customer on their own website. They are not on LangChain’s subprocessor list.

Changes

Mar 4, 2026 to Nov 10, 2026Source

Added 8

Removed 1

Elastic

Earlier lists

Mar 4, 20265 vendors

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