U.K.-based software debugging startup Undo has raised $37 million in new funding to expand internationally. The round was led by Austin-based private equity firm Elsewhere Partners.
The company records the full execution history of a running program and saves it to a single file. Most debugging tools show the code itself. Undo’s recordings capture what it actually did when it ran. The technology serves engineering teams at networking, database, semiconductor and financial services firms.
AI coding assistants have made that distinction more critical. Teams are shipping far more code than they can fully understand. Undo argues an AI agent cannot reliably track down why such code fails unless it can see how the software behaved at runtime. The company’s benchmarks show the latest AI models identified the root cause of complex bugs 38% of the time on their own, rising to 92% when given Undo’s runtime recordings.
Palo Alto Networks is a customer. Suresh Sangiah, its senior vice president of engineering, said the costliest bugs in large codebases live in runtime states that logs do not capture. He stated Undo often pinpoints the cause autonomously in minutes.
The capital will fund hiring on product, support, and sales teams in the United States and Europe. Founder and Chief Executive Greg Law said the investment allows acceleration at the exact moment the technology becomes essential with the rise of AI.