YOLOE (YOLO with Everything) is an open-vocabulary object detection and segmentation model developed by THU-MIG at Tsinghua University, released in March 2025 under the AGPL-3.0 license. It extends the YOLO architecture to support open-vocabulary detection through text and visual prompts, enabling the model to detect arbitrary object categories beyond a fixed training set without retraining. The design integrates prompt encoding directly into the YOLO framework while preserving real-time inference speed.
YOLOE is evaluated on COCO and LVIS benchmarks and supports both closed-set and open-vocabulary detection modes. It is built on the Ultralytics codebase and maintains compatibility with standard YOLO training and export workflows. YOLOE is suited for applications requiring flexible, prompt-driven object detection where the target object vocabulary may change at inference time.
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License terms and commercial-use guidance for YOLOE.
This model is released under the GNU Affero General Public License v3.0 (AGPL-3.0), a strong copyleft license. Like GPL-3.0, derivative works must be released under the same license, and AGPL-3.0 extends this requirement to network deployment.
Commercial use is permitted under AGPL-3.0, but if you offer this model as part of a network service (such as a public API or web app), you must make the complete source code of your modified version available to all users of that service. Many commercial users prefer to acquire a separate license from the model authors to avoid this requirement.
AGPL-3.0 closes the "SaaS loophole" in GPL-3.0: even hosting the model behind an API counts as distribution and triggers the source-disclosure requirement.
To use YOLOE in a commercial project without the AGPL-3.0 conditions, you need a commercial license. As a paid Roboflow customer, you're automatically granted commercial-use rights for YOLOE models trained on or uploaded to our platform. See the Roboflow Licensing guide for the deployment-method by plan matrix.
If you're a free Roboflow customer, you can use YOLOE through our serverless hosted API at no cost. Self-hosted commercial use requires a paid plan.
License information is provided as a guide and is not legal advice.