Packaging change·Jul 13 → Jul 21, 2026·Week 30, 2026·AI & Machine Learning
LangChain overhauls LangSmith billing: new LSU, size-based Serverless/Dedicat...
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.
What changed
Package 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.
Before and after
Jul 13, 2026 vs Jul 21, 2026Pulse.
100%
What changed
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.
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Week 25, 2026 · LangChain unlocks unlimited Fleet agents for free Developer planLangChain adds Support Portal + Slack support channels · Week 31, 2026
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- Week 31, 2026·improvedLangChain adds Support Portal + Slack support channels
- Week 25, 2026·improvedLangChain unlocks unlimited Fleet agents for free Developer plan