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US observability firm Datadog acquires French-American AI startup Adaptive ML for an undisclosed sum

Adaptive ML, an ex-Hugging Face team split between New York and Paris that raised a US$20m seed led by Index Ventures, folds its reinforcement-learning platform into Datadog AI Research

Startups·AI· active Whose Money·The Long Game ·7 takes · ·rbtfl upd Jul 2, 2026

Summary

Datadog said on 30 June 2026 it acquired Adaptive ML, a frontier-AI startup building a reinforcement-learning-operations (RLOps) platform, for an undisclosed sum. The team joins Datadog AI Research to work on world models and agentic post-training for cloud observability and security. Adaptive ML is headquartered in New York with most of its technical staff in Paris, founded by ex-Hugging Face researchers led by CEO Julien Launay, and had raised a US$20m seed led by Index Ventures at roughly a US$100m valuation. Datadog shares rose 3 to 4% on the news. Its Adaptive Engine fine-tunes open models with reinforcement learning and evaluates them against business outcomes.

The split

US coverage reads the deal as a software incumbent buying research talent to keep observability competitive as agents replace dashboards. European venture press frames Adaptive ML as another promising Paris AI team absorbed by a US acquirer before scaling independently, the recurring pattern that motivates European sovereign-tech funds. Datadog's own framing is narrower: owning the training loop that feeds its autonomous-operations roadmap.

By the numbers

  • Undisclosed, deal value.
  • US$20m, Adaptive ML's 2024 seed (Index Ventures lead).
  • ~US$100m, its seed-stage valuation.
  • 3 to 4%, Datadog's share-price gain on the news.
  • June 30, 2026, announced.

Why it matters

Observability is becoming an AI-agent market, and Datadog is buying the ability to train its own specialised models on proprietary infrastructure data rather than renting frontier APIs. The acquisition also marks another European-founded lab exiting to a US buyer early, the drain that Europe's new defence and dual-use funds are trying to reverse.

What to watch

  • Whether Datadog ships autonomous remediation agents, not just alerting.
  • Retention of the Paris research team post-acquisition.
  • Whether rivals Dynatrace, New Relic and Splunk answer with their own AI-lab deals.