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# The Signal: AI's Power Shift: Search, Ethics, and Autonomous Money
- URL: https://wire.fourthweb.ai/the-signal-ais-power-shift-search-ethics-and-autonomous-money/
- Published: 2026-05-20T16:01:21.000Z
- Updated: 2026-05-21T01:02:08.000Z
- Description: Exa reaches a $2.2 billion valuation by reinventing search for the AI era. Google fires an engineer over ethical objections to military AI work. Catena Labs raises $30 million to create banking infrastructure letting AI agents handle their own money autonomously.
- Author: Travis Wright
- Tags: daily-signal

Exa reaches a $2.2 billion valuation by reinventing search for the AI era. Google fires an engineer over ethical objections to military AI work. Catena Labs raises $30 million to create banking infrastructure letting AI agents handle their own money autonomously.

*May 20, 2026 — 619 words / \~4.1 min*

### Stories covered:

1. [Exa Hits $2.2B Building Search Google Can't Compete With](https://wire.fourthweb.ai/exa-hits-2-2b-building-search-google-cant-compete-with/)
2. [Google Fires AI Engineer Who Refused to Build Tools for Israeli Military](https://wire.fourthweb.ai/google-fires-ai-engineer-who-refused-to-build-tools-for-israeli-military/)
3. [Catena Labs Raises $30M to Build the First Bank for AI Agents](https://wire.fourthweb.ai/catena-labs-raises-30m-to-build-the-first-bank-for-ai-agents/)