LangChain overhauls LangSmith billing: new LSU, size-based Serverless/Dedicat...
What happened
Between the Jul 13, 2026 and Jul 21, 2026 captures of LangChain's pricing page, Pulse recorded one change: LangSmith added a new LSU unit, moved Deployment to size-based Serverless/Dedicated LCU/LSU metering (from per-run/uptime fees), and switched Fleet to LCU-metered usage with bundled model costs. Pulse files it as a packaging change (package change) with a neutral direction. Pulse's latest capture (Oct 5, 2026) lists Plus at $39.
It lands 34 days after LangChain's previous change, "LangChain unlocks unlimited Fleet agents for free Developer plan" (Jun 16, 2026). Before that Pulse recorded "LangChain launches metered billing at $1.50 per compute unit" (Jun 1, 2026) and "LangChain launches ephemeral agent sandboxes with usage-based pricing" (May 19, 2026). LangChain has been tracked since 2024-11-17.
In the same window Together AI, Anthropic, Huggingface, Cohere and Anyscale also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- — · PackagingAddedNo LSU unitLSU unit
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| — | Packaging | No LSU unit | LSU unit | Added |
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 Jul 13, 2026 and Jul 21, 2026; the change is marked near the top of the page, where LSU unit now appears.
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LangChain, the last 90 days
Full history- 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 27, 2026improvedLangChain adds Support Portal + Slack support channels
- Jul 21, 2026packagingLangChain overhauls LangSmith billing: new LSU, size-based Serverless/Dedicat... · this change
- Jun 16, 2026improvedLangChain unlocks unlimited Fleet agents for free Developer plan
- Jun 1, 2026packagingLangChain launches metered billing at $1.50 per compute unit
- May 19, 2026packagingLangChain launches ephemeral agent sandboxes with usage-based pricing
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- Together AIJul 21Together AI: LFM2.5-8B-A1B model discontinued from Serverless Inference
- AnthropicJul 6Anthropic launches Sonnet 5, cuts price to $2/$10 per MTok through Aug 31
- HuggingfaceJul 3Enterprise SCIM provisioning & Team SSO OIDC added + 2 more changes
- CohereJul 2Cohere: New Rerank 4 Pro Large tier in Model Vault ($10/hr, $6,500/mo)
- AnyscaleJun 15Anyscale pulls H100/H200 GPU prices, pushes enterprise sales
Questions about this change
Did LangChain raise prices in July 2026?
No list-price increase was recorded between Jul 13, 2026 and Jul 21, 2026. The change Pulse detected was a packaging change: package change.
What changed on LangChain's pricing page between Jul 13, 2026 and Jul 21, 2026?
Packaging: No LSU unit → LSU unit, added. Pulse compared the captures it took on Jul 13, 2026 and Jul 21, 2026; the before/after table above lists each item as written on the page.
How often does LangChain change its pricing?
Pulse recorded 3 other pricing-page changes for LangChain in the 90 days before this one; the previous change was "LangChain unlocks unlimited Fleet agents for free Developer plan" on Jun 16, 2026; LangChain has been tracked since 2024-11-17.