Raised $121M across disclosed rounds.[8]

Series B closed February 2026, led by ICONIQ Capital.[1][2][6][7]

post-money valuation is not publicly disclosed.

Named investors include Andreessen Horowitz, ICONIQ Capital, Greylock, Elad Gil, Basecase Capital, Datadog, Databricks Ventures.[9][5][2][6]

Ankur Goyal, Founder & CEO[12][8][6]

Eden Halperin, VP Product and Design[8][12]

Bryan Cox, Vice President of Worldwide Sales[8][12]

Alex Carleton, Head of Customer Experience[8][12]

Ameya Bhatawdekar, VP, Field CTO[8][12]

LangSmith · langchain.com · Same buyer and same job: AI engineering teams choosing a tracing and eval layer for LLM and agent applications. Included as the closest direct alternative in the LLM observability slice; no cited source in this ledger names it, so treat as category-level...[2][4]

Datadog LLM Observability · datadoghq.com · Datadog is both an investor in Braintrust's Series A and the incumbent whose general-purpose monitoring Braintrust argues cannot handle agent trace volume, so the same buyer with an existing Datadog budget is the displacement decision.[9][2]

Tsuga · tsuga.io · Same job to be done and same incumbent to displace: a venture-funded observability challenger explicitly positioned against Datadog, the same incumbent whose monitoring budget Braintrust targets, so a buyer evaluating a new observability layer would weigh...[19]

The customer proof is company-sourced only. No independent source in this ledger confirms it.[10]

Ask for one referenceable production customer.

Not a recommendation. The first thing this ledger cannot answer.

Filled in the side panel for invited readers. This card carries sourced facts only.