LangChain experienced a minor incident on October 8, 2026 affecting LangSmith LLM Gateway, lasting —. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Oct 08, 2026, 07:08 AM UTC
Status: Investigating The LLM Gateway (gateway.smith.langchain.com: http://gateway.smith.langchain.com) is returning an elevated rate of 502 errors. We are investigating. Affected components LangSmith LLM Gateway (Full outage)
- resolved Oct 08, 2026, 07:43 AM UTC
Status: Resolved From 07:08 to 07:43 UTC on October 8, 2026, the LLM Gateway (gateway.smith.langchain.com: http://gateway.smith.langchain.com) returned high 502 error rates. It was due to an incorrect infrastructure configuration change that stopped traffic from reaching the gateway. We fully restored the service at 07:43 UTC, and no other LangSmith services were affected. We're sorry for the disruption. Affected components LangSmith LLM Gateway (Operational)