---
title: GeoChrono
emoji: 🌍
colorFrom: red
colorTo: indigo
sdk: gradio
sdk_version: 6.15.1
app_file: app.py
short_description: Temporal reasoning over multi-temporal satellite imagery
python_version: "3.12"
startup_duration_timeout: 30m
---

# GeoChrono

Interactive demo for **GeoChrono**, a multimodal LLM for long-term temporal
understanding in remote sensing. Built on Qwen3-VL-4B-Instruct with a
Temporal Trajectory Encoder (TempEnc).

Upload a sequence of satellite images (each labeled with its year), ask a
question, and the model reasons about land cover changes and temporal patterns.

## Model

- Base: [Qwen/Qwen3-VL-4B-Instruct](https://huggingface.co/Qwen/Qwen3-VL-4B-Instruct)
- Weights: [Davidup1/GeoChrono](https://huggingface.co/Davidup1/GeoChrono)
- Code: [GitHub](https://github.com/IntelliSensing/GeoChrono)
- Paper: [arXiv:2607.15768](https://arxiv.org/abs/2607.15768)