Models & Releases

LFM2.5-Encoders for Fast Long-Context Inference on CPU

Running long-context AI efficiently on standard computers could expand access beyond cloud infrastructure and reduce deployment costs.

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Two new encoder models have been released that can process long documents while running on standard computer processors. These models match the quality of larger systems on language understanding tasks while maintaining fast speeds even as input length increases to 8,192 tokens. The models are useful for production applications like text classification, intent routing, and safety filtering that need to run constantly and affordably on CPU hardware. The encoders were created by converting decoder models into bidirectional encoders through attention mask changes and training with masked language modeling, then extending their context length in a second training stage.

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