Graylark /Articles

Research, field notes, and visual intelligence.

How Graylark builds, evaluates, and deploys visual intelligence for consequential investigative work.

Featured Company 6 min read

Why We Built GeoSpy and Why It Became Raven

GeoSpy started as a two-week experiment in a one-bedroom Boston apartment. The investigators who found it showed us what it needed to become.

Daniel HeinenFounder and CEO of Graylark Read article
Raven article card: Where Was This Photo Taken? How AI Detects Locations From Visual Clues
Guides 7 min read

Where Was This Photo Taken? How AI Detects Locations From Visual Clues

Wondering where a photo was taken? Learn how modern AI photo location finders analyze architecture, roads, foliage, and lighting to pinpoint locations without metadata.

Read article
Raven article card: How to Find Photo Location Without Metadata (EXIF Data)
Workflow 8 min read

How to Find Photo Location Without Metadata (EXIF Data)

Learn how to locate where an image was taken even when EXIF GPS metadata is completely stripped. Step-by-step investigative methods using AI geolocation, visual clues, and reverse tools.

Read article
Raven article card: Top 5 Visual Clues That Reveal Location in Any Photo
Guides 7 min read

Top 5 Visual Clues That Reveal Location in Any Photo

Discover the top 5 visual indicators experts and AI models use to geolocate photos: architecture, road markings, flora, utility infrastructure, and sun shadows.

Read article
Raven article card: AI Geolocation vs. Reverse Image Search: Which Works Better?
Guides 6 min read

AI Geolocation vs. Reverse Image Search: Which Works Better?

Reverse image search vs AI photo geolocation: learn the fundamental differences, why Google Lens fails on personal photos, and how AI finds locations from new images.

Read article
Raven article card: The Science Behind AI Photo Geolocation: Neural Networks & Geographic Embeddings
Workflow 9 min read

The Science Behind AI Photo Geolocation: Neural Networks & Geographic Embeddings

Explore the deep learning architectures, Vision Transformers, and hierarchical geocells that enable AI systems to estimate photo locations across Earth in milliseconds.

Read article
Raven article card on a dark grid. Category Workflow. Title, Geolocating a Suspected Stolen Car From a Single Social Media Post. Graylark Technologies.
Workflow 8 min read

Geolocating a Suspected Stolen Car From a Single Social Media Post

One public listing, one low-context photo, no metadata. How Raven takes an investigator from a suspicious vehicle post to a street-level hypothesis, a visual match, an organized case, and nearby camera leads.

Read article
Raven article card on a dark grid. Category Company. Title, A Research Lab in Service of Its Customers. Graylark Technologies.
Company 11 min read

A Research Lab in Service of Its Customers

Graylark combines the rigor of defense research, the speed of Silicon Valley prototyping, and product design that makes advanced AI usable in the field.

Read article
Raven article card on a dark grid. Category Guides. Title, What Is Image Geolocation? How Investigators Locate Photos Without Metadata. Graylark Technologies.
Guides 8 min read

What Is Image Geolocation? How Investigators Locate Photos Without Metadata

What image geolocation is, how it differs from GPS and reverse image search, where it breaks down, and how investigators turn a low-context image into a verified location.

Read article
Company news card. Graylark Raises $10.7 Million to Build Raven. Seed round, 2026.
News 1 min read

Graylark Raises $10.7 Million to Build Raven

The seed round was led by General Catalyst, with backing from AI Grant and participation from Alexandr Wang, Recorded Future, and other investors and operators.

Read announcement
Raven article card on a dark grid. Category Guides. Title, GeoSpy 101: AI Image Geolocation, Explained. Graylark Technologies.
Guides 5 min read

GeoSpy 101: AI Image Geolocation, Explained

What GeoSpy is, how visual geolocation works, and how it evolved into Raven by Graylark.

Read article

See Raven run on your own imagery.

Raven is available to verified agencies and investigative teams.

Book a demo → Explore capabilities