GPT‑4o vision fine-tuning enables the service to correctly localize traffic signs and count lane dividers to refine the mapping data. Today, GrabMaps not only supports Grab’s services but also powers enterprises with its location intelligence capabilities.

Southeast Asia presents a uniquely challenging environment for mapping. Its road networks include narrow, one-way streets optimized for motorbikes and pedestrians, rapidly changing urban landscapes, and limited coverage from conventional mapping providers.

Grab turned to OpenAI’s GPT‑4o with vision fine-tuning to overcome these obstacles.

By using its network of motorbike drivers and pedestrian partners, each equipped with 360-degree cameras, GrabMaps collected millions of street-level images to train and fine-tune models for detailed mapmaking.