Notion - Inside the Model Router That Powers "Auto"

Ghita Houir Alami, an Engineering Manager at Notion, published a detailed writeup of how Notion rebuilt the "Auto" model router that powers Notion AI. The piece explains how Notion measures model quality at scale using pairwise comparisons and calibrated judging, rather than relying on public benchmarks, to decide which underlying model handles a given request.

AWS - A FinOps Playbook for Bedrock Costs

AWS published a five-stage operating model for managing Amazon Bedrock costs: attribute every dollar to an owner, make every request observable, enforce budgets, optimize platform defaults, and run a regular review cadence. This lands the same week AWS also shipped "Managing Amazon Bedrock Costs" tooling updates and a case study showing Worldwide Express cut freight-exception costs 75% and unlocked $10M in free cash flow using a multi-agent Bedrock system.

LangChain - Deep Agents Get Browser Use and Async Subagents

LangChain shipped Managed Deep Agents v0.10, adding two capabilities: browser use, so agents can operate on sites with no API and hand control back to a human for sign-in steps, and async subagents for background work that doesn't block the main agent loop.