The AI Tea
At a glance
- What changed
- Google says Gemini API File Search now supports images plus text, metadata filtering, and page citations to ground RAG responses.
- Why it matters
- Multimodal retrieval and citations make it easier to build assistants that can show evidence, reduce wrong references, and search images alongside documents.
- Who is affected
- developers, operators, product teams
- What to do next
- Watch how well the citations hold up at scale, and whether SDKs and third-party RAG tooling adopt the new File Search features quickly.
What changed
On May 5, 2026, Google updated the Gemini API File Search tool with multimodal retrieval, custom metadata filtering, and page-level citations for RAG.
Why it matters
Multimodal retrieval and citations make it easier to build assistants that can show evidence, reduce wrong references, and search images alongside documents.
In plain English
You can ask questions about a folder of PDFs and images, and File Search can pull the right pages and show where the answer came from.
What this means for you
Who is affected: developers, operators, product teams
Next move: Watch how well the citations hold up at scale, and whether SDKs and third-party RAG tooling adopt the new File Search features quickly.
- File Search can retrieve relevant images and text in one query flow.
- Custom metadata filters help narrow retrieval to the right subset of files.
- Page-level citations show the specific page that supported a response.
What remains uncertain
Watch how well the citations hold up at scale, and whether SDKs and third-party RAG tooling adopt the new File Search features quickly.