LangChain merges LangSmith LCU and LSU into one $1.00 Standard Unit
What happened
Between the Oct 1, 2026 and Oct 2, 2026 captures of LangChain's pricing page, Pulse recorded one change: LangSmith consolidated LCU ($1.50) and LSU ($1.00) into one LangChain Standard Unit at $1.00; usage rates rescaled (e.g. 0.045 LCU to 0.0675 LSU per vCPU-hr) and included units restated in LSU. Pulse files it as a packaging change (metric change). Pulse's latest capture (Nov 15, 2026) lists Plus at $39.
It lands 39 days after LangChain's previous change, "LangChain: new Tuned Evaluators usage pricing (0.01 LCU/eval run)" (Aug 24, 2026). Before that Pulse recorded "LangChain: Startup discount program now discloses $10,000 credit amount" (Jul 28, 2026), "LangChain adds Support Portal + Slack support channels" (Jul 26, 2026) and "LangChain overhauls LangSmith billing: new LSU, size-based…" (Jul 21, 2026). LangChain has been tracked since 2024-11-17.
In the same window OpenAI, Together AI, Cohere and Anthropic also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- Metric change—Pricing model
LangSmith consolidated LCU ($1.50) and LSU ($1.00) into one LangChain Standard Unit at $1.00; usage rates rescaled (e.g. 0.045 LCU to 0.0675 LSU per vCPU-hr) and included units restated in LSU.
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| — | Pricing model | — | $1.00 | Metric change |
Values as written on LangChain's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of LangChain's pricing page (langchain.com) from Oct 1, 2026 and Oct 2, 2026; the change is marked near the top of the page.
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LangChain, the last 90 days
Full history- Nov 12, 2026PackagingLangChain renames LangSmith Deployment to Agent Server, pricing unchanged
- Oct 4, 2026PackagingLangChain retires LCU billing, moves all usage to $1 Standard Units
- Oct 2, 2026PackagingLangChain merges LangSmith LCU and LSU into one $1.00 Standard Unit This change
- Aug 24, 2026ImprovementLangChain: new Tuned Evaluators usage pricing (0.01 LCU/eval run)
- Aug 3, 2026PackagingLangChain: VC-backed startup discount now discloses $10K credit amount
- Jul 28, 2026PackagingLangChain: Startup discount program now discloses $10,000 credit amount
- Jul 26, 2026ImprovementLangChain adds Support Portal + Slack support channels
- Jul 21, 2026PackagingLangChain overhauls LangSmith billing: new LSU, size-based…
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- OpenAIOct 3OpenAI adds Health and Finances to all plans, recasts plan taglines
- Together AIOct 2Together AI adds Tev1 4B Experimental at $0.04 input with free output tokens
- CohereOct 1Cohere cuts Model Vault Small to $3/hr as Embed 5 replaces Embed 4
- AnthropicSep 28Anthropic API: Opus 5.5 launches, replaces Opus 5 as flagship
Questions about this change
Did LangChain raise prices in October 2026?
No list-price increase was recorded between Oct 1, 2026 and Oct 2, 2026. The change Pulse detected was a packaging change: metric change.
What changed on LangChain's pricing page between Oct 1, 2026 and Oct 2, 2026?
LangSmith consolidated LCU ($1.50) and LSU ($1.00) into one LangChain Standard Unit at $1.00; usage rates rescaled (e.g. 0.045 LCU to 0.0675 LSU per vCPU-hr) and included units restated in LSU. Pulse compared the captures it took on Oct 1, 2026 and Oct 2, 2026; the before/after table above lists each item as written on the page.
How often does LangChain change its pricing?
Pulse recorded 4 other pricing-page changes for LangChain in the 90 days before this one; the previous change was "LangChain: new Tuned Evaluators usage pricing (0.01 LCU/eval run)" on Aug 24, 2026; LangChain has been tracked since 2024-11-17.