As of December 2025, the foundation model with the highest transparency index score was IBM Granite 3.3 with a score of **, followed by Writer Palmyra X5 with a score of **.
The Foundation Model Transparency Index (FMTI) evaluates the transparency level of artificial intelligence (AI) foundation models across multiple dimensions, such as resource allocation development, algorithmic design strategies, and downstream applications of the models.Â
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Stanford University. (December 11, 2025). Artificial intelligence (AI) foundation models ranked by transparency index score as of December 2025 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 17, 2026, from /statistics/1472004/ai-foundation-model-transparency-index-score/
Stanford University. "Artificial intelligence (AI) foundation models ranked by transparency index score as of December 2025." Chart. December 11, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 17, 2026. /statistics/1472004/ai-foundation-model-transparency-index-score/
Stanford University. (2025). Artificial intelligence (AI) foundation models ranked by transparency index score as of December 2025. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 17, 2026. /statistics/1472004/ai-foundation-model-transparency-index-score/
Stanford University. "Artificial Intelligence (Ai) Foundation Models Ranked by Transparency Index Score as of December 2025." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 11 Dec 2025, /statistics/1472004/ai-foundation-model-transparency-index-score/
Stanford University, Artificial intelligence (AI) foundation models ranked by transparency index score as of December 2025 ÌÇÐÄÆƽâ°æ, /statistics/1472004/ai-foundation-model-transparency-index-score/ (last visited July 17, 2026)
Artificial intelligence (AI) foundation models ranked by transparency index score as of December 2025 [Graph], Stanford University, December 11, 2025. [Online]. Available: /statistics/1472004/ai-foundation-model-transparency-index-score/
