Pydantic's Monty goes commercial as banks quietly spend millions building their own sandboxes

samuelcolvin · x · 2026-09-11

Pydantic founder Samuel Colvin reveals that multiple massive financial institutions have entire internal teams spending millions building Monty-style sandbox-as-a-service for their own use — validating a market the team thought was too early. The full commercial Monty service is production-ready now: snapshotable, durable, forkable sandboxes with <1ms launch times.

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