LangChain

New

The open agent platform to own your intelligence

AI AgentsSan Francisco, CA, United States201–500 employeesFounded 2023

#12 of 80 in AI Agents7,000 customers (per langchain.com)17% positive in AI answers

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Visibility score

10.4%

New vs last week

Weekly run · Nov 3

Data collected Nov 3, 2026·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run Nov 9, 2026

LangChain ranks #12 of 80 in AI Agents with an AI visibility score of 10.4 (SlateIndex, Nov 3, 2026).
LangChain is most visible on Google AI Mode (13.3) and least on Perplexity (5.2).
AI engines name LangChain in 13 of the 30 AI Agents buyer prompts SlateIndex tracks.
langchain.com is the source AI engines cite most in answers about LangChain, with 10 citations.

About

Company details for LangChain

LangSmith is an agent engineering platform for building, testing, deploying, monitoring and governing AI agents. It includes tracing, evaluations, a managed deployment service, the Fleet agent builder, the Engine issue-detection agent, sandboxes and an LLM gateway. LangChain also maintains open source frameworks, including LangGraph and Deep Agents, for building agents with any model provider. It ranks #12 of 80 in AI Agents on SlateIndex and has a visibility score of 10.4 in the latest weekly run.

Founded in 2023 and headquartered in San Francisco, CA, United States, the company employs 201–500 people. Its differentiator: open source frameworks paired with a commercial platform, so teams can use LangSmith whether or not they build on the open source frameworks.

Website: langchain.com
Categories: AI Agents
Company size: 201–500 employees
Headquarters: San Francisco, CA, United States
Founded: 2023
Company type: Private, venture-backed
Funding: Series B, led by IVP
Customers: 7,000 · per langchain.com
Pricing: Free; paid from $39 per seat / mo · per seat
Free trial: Free plan available
Deployment: Cloud (SaaS), hybrid (SaaS control plane with self-hosted data plane), or self-hosted in the customer's VPC
Support: Community forum, Support portal, Email support, Slack, Team trainings, Architectural guidance, Access to deployed engineers (Enterprise), SLA (Enterprise)

LinkedIn · linkedin.com/company/langchain/X (Twitter) · twitter.com/LangChain YouTube · youtube.com/@LangChain

Read from linkedin.com, langchain.com, sacra.com · refreshed Nov 3, 2026.

AI visibility

Latest weekly run · Nov 3 · next run Nov 9

Visibility score

10.4%

across AI Agents answers, weighted by position

ChatGPT12.6%

AI Mode13.3%

Perplexity5.2%

Change

New

vs last week’s run

Category rank

#12 of 80

in AI Agents

Mentions

in this week’s run

Share of voice

2.7%

of AI mentions in AI Agents

Visibility score trend

Weekly runs over the last 60 days, with up to 7 competitors. Click a name to hide or show its line.

Now10.4%

30-day change—

High · low10.4% · 10.4%

Rank#12

Changes appear after the second weekly run in AI Agents. Microsoft Copilot Studio leads the category at 33.3%.

Media

Website and product screenshots for LangChain

All media

Home page

Pricing page

AI mentions & citations

Recent answers that name LangChain

All prompts

Where can I sign up for an AI agent platform?

Visit LangChain · Open Agent Platform signup

ChatGPT · run of Nov 3

Best AI agent platform for startups

Overview: Built by the team behind LangChain, LangGraph models agents as state graphs (nodes for actions, edges for transitions).

Google AI Mode · run of Nov 3

Best AI agent platform for enterprise

Why it fits enterprise: Developed by LangChain, LangGraph treats agent loops as robust state machines.

Google AI Mode · run of Nov 3

Compare the leading AI Agents platforms

Learn More: Check out the official documentation on LangChain.[](https://pub.towardsai.net/top-ai-agent-frameworks-in-2026-a-production-ready-…

Google AI Mode · run of Nov 3

Who makes the most used AI agent platform?

Developer framework: LangChain/LangGraph appears to lead open-source adoption, with roughly 90 million combined monthly downloads reported in late 2026.

Perplexity · run of Nov 3

How do I choose an AI agent platform for a mid-market team?

Build Experience: Favor a low-code/visual builder that empowers operations or product managers to tweak triggers and knowledge bases, rather than a heavy developer framework (like raw LangChain/LangGraph) that drains…

Google AI Mode · run of Nov 3

Alternatives to the most popular AI agent platform

ChatGPT · run of Nov 3

Who makes the most used AI agent platform?

Agent development frameworks: LangChain, LlamaIndex.

ChatGPT · run of Nov 3

Products & features

What LangChain sells

LangSmith

Platform for tracing, evaluating, deploying and monitoring agents.

LangSmith Fleet

No-code builder for creating agents from everyday language, formerly Agent Builder.

LangSmith Engine

Agent that detects production failures, diagnoses root causes and proposes fixes.

LangSmith Sandboxes

Isolated environments for running agent-generated code.

LangSmith LLM Gateway

Controls model calls, spend and sensitive data between agents and model providers.

LangGraph

Open source framework for building agents with low-level control.

LangChain

Open source framework for building agents quickly with templates and any model provider.

Deep Agents

Open source agent harness for autonomous, long-running tasks.

Strengths engines cite

Stateful multi-agent orchestration via state graphs
Strong open-source adoption with large download numbers
Suited to enterprise agent loops

Target market & buyers

Teams of any size, from solo developers and startups to enterprises

Notable customers include Klarna, Monday Service, Podium, C.H. Robinson, ServiceNow, Nvidia, Bridgewater, LinkedIn.

Industry	Primary use case
Financial Services	Morningstar's Mo AI research assistant, which saves analysts about 30% of their time
Healthcare	City of Hope's HopeLLM, which saved clinicians 1000+ hours
B2B SaaS	Salesforce standardizes agent evaluations with LangSmith
Logistics	C.H. Robinson automated 5,500 orders per day with LangSmith

Funding & recent developments

Funding

Round	Year	Amount
Seed	2023	$10M
Series A	2024	$25M
Reported round, led by IVP	2025	$100M
Series B, led by IVP	2025	$125M

Latest known round	Total raised
Series B, led by IVP	—

Recent developments

Aug 2026ProductBring Your Own Cloud available on AWS
Teams can run LangSmith in their own VPC.
May 2026ProductSandboxes reach general availability
Sandboxes moved from private preview to general availability.
Mar 2026ProductAgent Builder renamed LangSmith Fleet
Renamed product adds agent identity, sharing and permissions.
Mar 2026PartnershipEnterprise agentic AI platform built with NVIDIA
LangChain announced an enterprise agentic AI platform built with NVIDIA.
Oct 2025FundingSeries B of $125M at a $1.25B valuation
Round led by IVP, reported for October 2025.

Competitive landscape

How LangChain compares with its top three alternatives

All alternatives

LangChain most often appears alongside LangGraph, OpenAI Agents SDK, CrewAI in AI answers.

vsLangChain vs LangGraph10.4% vs 24.4% visibility · LangGraph leadsFull comparison vsLangChain vs OpenAI Agents SDK10.4% vs 31.4% visibility · OpenAI Agents SDK leadsFull comparison vsLangChain vs CrewAI10.4% vs 17.5% visibility · CrewAI leadsFull comparison

Brand	Visibility	Share of voice	vs last week	Starting price
LangChain	10.4%	2.7%	New	Free plan
LangGraph	24.4%	5.3%	New	Pricing not available
OpenAI Agents SDK	31.4%	5.8%	New	Pricing not available
CrewAI	17.5%	4.9%	New	Free plan
Microsoft Copilot Studio	33.3%	5.9%	New	Pricing not available