GPT-4.5's performance with different image file formats is influenced by several factors, including the type of format and the clarity of the image. Here's a detailed overview:
Supported File Formats
GPT-4.5 supports a variety of widely used image formats, including PNG, JPEG (both .jpeg and .jpg), WEBP, and non-animated GIF**[2]. These formats are chosen for their compatibility and widespread use, making it easier for users to integrate images into the system.File Size Limitations
Each image uploaded must not exceed 20MB in size. This restriction is crucial for maintaining efficient processing and optimal performance of the model. Exceeding this limit will prevent the upload from being processed, so users should compress or resize images if necessary[2].Image Clarity and Interpretation
The clarity of an image significantly affects GPT-4.5's ability to interpret it accurately. If an image is unclear or ambiguous, the model may struggle to provide accurate results. It is advisable to ensure that images are of high quality and that the content is easily discernible[2].File Format Impact on Image Description Quality
While GPT-4.5 can process various formats, the choice between formats like PNG and JPEG might influence the quality of image descriptions. PNG files, which are lossless, can provide more detailed information when zoomed in, potentially leading to better descriptions of complex images. On the other hand, JPEG files use lossy compression, which reduces file size but may compromise detail, especially in complex scenes[4].Processing and Metadata
GPT-4.5 does not process image metadata, such as EXIF data embedded in the image file. Therefore, users should ensure that the content they wish to convey is clearly visible within the image itself[2].In summary, while GPT-4.5 supports multiple image formats and can handle files up to 20MB, the clarity and format of the image can impact its performance. Users should opt for formats that provide the necessary detail for their specific tasks and ensure images are clear and well-defined for optimal results.
Citations:
[1] https://help.openai.com/en/articles/10658365-gpt-4-5-in-chatgpt
[2] https://www.restack.io/p/gpt-4-answer-file-upload-limits-cat-ai
[3] https://cdn.openai.com/gpt-4-5-system-card.pdf
[4] https://community.openai.com/t/evaluating-the-impact-of-file-formats-on-image-description-quality-png-vs-jpg/790919
[5] https://9meters.com/technology/ai/gpt-4-5-begins-rolling-out-to-plus-and-team-users-next-week-then-to-enterprise-and-edu-users-the-following-week
[6] https://www.techtarget.com/searchenterpriseai/tip/GPT-35-vs-GPT-4-Biggest-differences-to-consider
[7] https://techcrunch.com/2025/02/27/openai-unveils-gpt-4-5-orion-its-largest-ai-model-yet/
[8] https://www.reddit.com/r/OpenAI/comments/18monbs/gpt_4_has_been_toned_down_significantly_and/