Two app-layer leaders made moves this week — one on capital, one on M&A.
Cognition (Devin) reportedly at a $25B valuation
On April 23, Bloomberg reported that Cognition, maker of the Devin coding agent, was in talks to raise at a $25B valuation — more than double its prior ~$10.2B — on the back of its Windsurf integration and enterprise traction. (The round later closed in late May; see that digest.) The autonomous-coding category is drawing some of the largest checks in software.
Sierra keeps buying its way to scale
The same day, Bret Taylor's customer-service-agent company Sierra acquired YC-backed French startup Fragment — its third acquisition of 2026, after Opera Tech and Receptive AI in late March — expanding its agent-building presence in France. Expect more roll-ups as the well-funded agent platforms race to own categories.
Model watch: GPT-5.5
On the model layer, OpenAI launched flagship GPT-5.5 on April 23, emphasizing agentic coding and computer use — the model much of the year's agent tooling is built against.
What it means if you're picking tools
If you're choosing a coding agent or a customer-support agent, the field is being shaped by who can fund and acquire fastest. See coding and customer support.
Sources: Cognition funding talks (Bloomberg) · Sierra acquires Fragment (TechCrunch)