Date: 2026-09-21 (America/Chicago)
Slug: langchain
Primary sources: langchain.com, langchain.com/pricing, docs.langchain.com, blog
LangChain Inc. builds open-source agent frameworks (LangChain, LangGraph, Deep Agents) and a commercial LangSmith platform for observability, evaluation, deployment, Fleet (no-code agents), Engine (agent-for-agent-engineering), Sandboxes, and LLM Gateway.
Positioning (FACT — homepage): “the open agent platform to own your intelligence” / agent development lifecycle: Build → Test → Deploy → Monitor → Iterate → Govern.
| Plan | Seat price | Included traces | Notes |
|---|---|---|---|
| Developer | $0 / seat / mo then PAYG | Up to 5k base traces / mo | Max 1 seat; community support; Cloud |
| Plus | $39 / seat / mo then PAYG | Up to 10k base traces / mo | Unlimited seats; Deployment, Engine, and more; 1 free Serverless (Small) deployment |
| Enterprise | Custom | Custom | Self-hosted / hybrid; custom SSO, ABAC, RBAC; Support SLA; custom seats/workspaces; Cloud, Hybrid, or Self-Hosted |
Usage units (FACT — pricing FAQ):
Included allowances called out on pricing:
Billing cadence (FACT — pricing FAQ): Developer/Plus seats billed monthly (1st or pro-rated); traces billed monthly in arrears; Enterprise invoiced annually upfront.
Startup Plan (FACT — pricing FAQ): Discounted rates + generous free trace allotments for early-stage companies — apply via site CTA.
Retention (FACT — pricing FAQ + docs): Base traces 14 days; Extended 400 days on pricing FAQ (docs also note SaaS extended max policy changes — cite pricing FAQ for product marketing numbers). Upgrade base → extended for an additional fee (exact ¢ rates point to pricing calculator / list; not restated here if not bare on page body).
Open source: LangChain, LangGraph, Deep Agents — free frameworks; any model provider.
LangSmith commercial: Observability & Evaluation (tracing, monitoring, evals), Deployment (Agent Server / Studio), Fleet, Engine, Sandboxes, LLM Gateway.
Open-source frameworks ($0) → LangSmith Developer ($0 / 1 seat / 5k traces) → Plus ($39/seat + PAYG traces / LCU / LSU; 1 free small serverless) → Startup discounts → Enterprise (hybrid/self-host, SSO/ABAC/RBAC, annual invoice).
Accent chosen: #1C3C3C (LangChain brand dark green per Simple Icons / logo mark)
# LangChain — research brief **Date:** 2026-09-21 (America/Chicago) **Slug:** langchain **Primary sources:** langchain.com, langchain.com/pricing, docs.langchain.com, blog ## Company snapshot LangChain Inc. builds open-source agent frameworks (**LangChain**, **LangGraph**, Deep Agents) and a commercial **LangSmith** platform for observability, evaluation, deployment, Fleet (no-code agents), Engine (agent-for-agent-engineering), Sandboxes, and LLM Gateway. **Positioning (FACT — homepage):** “the open agent platform to own your intelligence” / agent development lifecycle: Build → Test → Deploy → Monitor → Iterate → Govern. ## FACT — pricing (langchain.com/pricing, fetched 2026-09-21) | Plan | Seat price | Included traces | Notes | |------|------------|-----------------|-------| | **Developer** | $0 / seat / mo then PAYG | Up to **5k base traces / mo** | Max **1 seat**; community support; Cloud | | **Plus** | **$39 / seat / mo** then PAYG | Up to **10k base traces / mo** | Unlimited seats; Deployment, Engine, and more; **1 free Serverless (Small)** deployment | | **Enterprise** | Custom | Custom | Self-hosted / hybrid; custom SSO, ABAC, RBAC; Support SLA; custom seats/workspaces; Cloud, Hybrid, or Self-Hosted | **Usage units (FACT — pricing FAQ):** - **LCU** (LangChain Compute Unit) = **$1.50** — Engine, Fleet, deployments, sandboxes (compute work) - **LSU** (LangChain Storage Unit) = **$1.00** — traces, deployments, sandboxes (storage) **Included allowances called out on pricing:** - Fleet: Developer **5 LCU**/mo free; Plus **25 LCU**/mo (org-wide) - Sandboxes: **5 LCU & 1 LSU**/mo free (Developer also limited to 10 Sandboxes) - Plus Deployment: 1 free Serverless Small; additional Serverless/Dedicated metered (Runtime Compute 0.045 LCU/vCPU-hr, etc. — FACT pricing table) **Billing cadence (FACT — pricing FAQ):** Developer/Plus seats billed monthly (1st or pro-rated); traces billed monthly in arrears; Enterprise invoiced annually upfront. **Startup Plan (FACT — pricing FAQ):** Discounted rates + generous free trace allotments for early-stage companies — apply via site CTA. **Retention (FACT — pricing FAQ + docs):** Base traces **14 days**; Extended **400 days** on pricing FAQ (docs also note SaaS extended max policy changes — cite pricing FAQ for product marketing numbers). Upgrade base → extended for an additional fee (exact ¢ rates point to pricing calculator / list; not restated here if not bare on page body). ## FACT — homepage metrics (langchain.com, 2026-09-21) - **350M+** monthly open-source downloads - **7K+** active LangSmith customers - **5 of the Fortune 10** are LangSmith customers - Named case: C.H. Robinson automated 5,500 orders/day (case study teaser) ## SECONDARY — funding / narrative - Blog “Reflections on Three Years…” announces **$125M** round at **$1.25B** valuation to expand LangSmith (company blog — treat as company-stated). - Press (e.g. Fortune/Inkl): Series B led by IVP; prior seed Benchmark, Series A Sequoia — **do not invent ARR**. ## Product map (FACT — site IA) **Open source:** LangChain, LangGraph, Deep Agents — free frameworks; any model provider. **LangSmith commercial:** Observability & Evaluation (tracing, monitoring, evals), Deployment (Agent Server / Studio), Fleet, Engine, Sandboxes, LLM Gateway. ## Teaching arc (for BMC) Open-source frameworks ($0) → LangSmith **Developer** ($0 / 1 seat / 5k traces) → **Plus** ($39/seat + PAYG traces / LCU / LSU; 1 free small serverless) → **Startup** discounts → **Enterprise** (hybrid/self-host, SSO/ABAC/RBAC, annual invoice). ## Labels - FACT = pricing page, docs, homepage, company blog - SECONDARY = third-party press - INFERENCE = cost-structure / GTM shape without disclosed P&L **Accent chosen:** `#1C3C3C` (LangChain brand dark green per Simple Icons / logo mark)