Gemini-AI
Gemini-AI is a training crawler operated by Google. Its job is to read public web pages and feed that content into a machine-learning pipeline that trains future versions of the model.
Unlike a search-engine crawler, a training crawler does not send users back to your site. The content is consumed once, baked into the model, and shows up later in the model's responses. There is usually no citation and no referral traffic.
If Google ships a new model version, you will likely see Gemini-AI traffic spike for a few weeks while it gathers fresh data, then quiet down again.
See Gemini-AI on your own site
Match the User-Agent header on incoming requests against the pattern below.
regex
Verify by IP
For higher confidence, also verify the source IP against the operator's published ranges. UA strings can be spoofed; IP ownership is harder to fake.
Renders JavaScript
No
IP verification
Published IP ranges
Crawl frequency
Periodic, broad
Honors robots.txt
Yes
Honors Crawl-delay
No
Google runs 103 bots in total. Each one is a separate user-agent so you can allow or block them independently.
Link Unfurler
25- Google Feed Fetcher
- Google Image Proxy
- Google Publisher Center
- Google Web Preview
- Google-AdWords-Express
- Google-PageRenderer
- Google-Read-Aloud
- GoogleDocs
- GoogleImageProxy
- GoogleProducer
- Gmail Image Proxy
- Google Calendar Importer
- Google Page Renderer
- Google Web Snippet
- Google API
- Google Cloud Scheduler
- Google-Document-Conversion
- Google Sheets
- Google Slides
- Google Docs
- Google Area 120 Privacy Policy Fetcher
- Chrome Privacy Preserving Prefetch Proxy
- Google Cloud Function
- GoogleApps-DocumentScanner
- GoogleStackdriverMonitoring
Search Engine
14DevOps & Monitoring
13- Chrome-Lighthouse
- Google Inspection Tool
- Google Schema Markup Testing Tool
- Google Trust Services (DCV Check)
- Google-Structured-Data-Testing-Tool
- GoogleAssociationService
- ProjectShield Url Check
- Google Read Aloud
- Google Search Console
- Google Page Speed Insights
- Google Partner Monitoring
- Google Structured Data Testing Tool
- Google Stackdriver Monitoring
Ads Network Bot
11Training Crawler
9Agentic Browser
8Security Scanner
7SEO Crawler
4Brand Intelligence
3Shopping Bot
3Live-Fetch AI
2Ad Verification
2AI Coding Tool
1Agentic Commerce
1Should I let Gemini-AI through?
There's a real trade-off here. Training crawlers consume content without sending users back. Decide whether the trade for being in the model is worth your bandwidth. If Google actually drives traffic or citations back to you, letting it through usually pays for itself. If it just consumes bandwidth, block it.
Does blocking Gemini-AI affect my Google rankings?
No. Gemini-AI collects training data, not search-index pages. Your classical search rankings stay intact. The actual trade is whether you want your content folded into the next model release.
How do I confirm a request is really from Gemini-AI?
Two checks. The User-Agent header should match a known Gemini-AI string, and the request's source IP should fall inside Google's published ranges. The User-Agent alone is trivially spoofable, so the IP check is what gives you confidence. Google publishes the ranges so you can validate at the CDN or edge.
What happens to my content if I let Gemini-AI fetch it?
It gets pulled into Google's training pipeline and stored. Whether and how it influences a future model release is rarely disclosed. The only real lever you have on the outcome is what you allow at fetch time.
How is Gemini-AI different from Google's other bots?
Google splits work across multiple user-agents so site owners can decide on each one independently. Training crawlers, live-fetch agents, search indexers, and agentic browsers each get their own name. Worth scanning the rest of the Google family above to see which ones actually matter for your site.
What's the cleanest way to control Gemini-AI?
Two layers. Robots.txt for the polite crawlers that read it, and rules at your CDN or edge for the ones that don't. Rankly's Agent Experience handles both from a single config, so you can allow, block, rate-limit, or serve a stripped-down version per bot. Agent Analytics handles the observation half so you know which bots are actually worth a rule.
Verify everything above against the operator's own documentation.