Transformers v5: Simple model definitions powering the AI ecosystem

Transformers v5: Simple model definitions powering the AI ecosystem Transformers v5: Simple model definitions powering the AI ecosystem Published December 1, 2025 Update on GitHub Upvote 315 Lysandre lysandre Arthur Zucker ArthurZ Cyril Vallez cyrilvallez Vaibhav Srivastav reach-vb Transformers' version v4.0.0rc-1, the initial release candidate for version 4, was released on November 19th, 2020. Five years later, we now release v5.0.0rc-0.

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• Transformers v5: Simple model definitions powering the AI ecosystem Published December 1, 2025 Update on GitHub Upvote 315 Lysandre lysandre Arthur Zucker ArthurZ Cyril Vallez cyrilvallez Vaibhav Srivastav reach-vb Transformers' version v4.0.0rc-1, the initial release candidate for version 4, was released on November 19th, 2020.
• Five years later, we now release v5.0.0rc-0.
• Today, as we launch v5, Transformers is installed more than 3 million times each day via pip - up from 20,000/day in v4 🤯.
• Altogether, it has now surpassed 1.2 billion installs !
• The ecosystem has expanded from 40 model architectures in v4 to over 400 today , and the community has contributed more than 750,000 model checkpoints on the Hub compatible with Transformers, up from roughly 1,000 at the time of v4.
• This growth is powered by the evolution of the field and the now mainstream access to AI.