The AI tooling and infrastructure layer is consolidating rapidly through acquisition — 19+ corpus companies saw M&A or acqui-hire events in roughly two years, with LLM observability/gateways the hottest segment (four exits in the five months to May 2026: Langfuse, Helicone, Galileo, Portkey). The acquirers are established platform companies (MongoDB, Elastic, Stripe, Kong, Zuora, CoreWeave, Nebius, Cisco, Palo Alto Networks, ClickHouse, Salesforce, Microsoft, Meta, Superhuman/Grammarly, Appier) absorbing specialist tools into their stacks. The fork holds: asset acquisitions (Voyage, Jina, Tavily, Metronome) tend to preserve the rate card, while acqui-hires (Clockwise, Robin, Rows, Humanloop, PlayHT) tend to sunset or gate the product.