NSFW-Wan-UMT5-XXL (BF16 Fixed)

• A working BF16 version of the NSFW-tuned UMT5-XXL text encoder for Wan 2.1 / Wan 2.2 models.
• FP16 version (nsfw_wan_umt5-xxl_fp16.safetensors): For those who prefer FP16.

What is this model?

This is a fixed BF16 version of the popular NSFW-Wan-UMT5-XXL text encoder.

How it differs from the original

• The original Google UMT5-XXL (the default encoder used in Wan models) has a very limited vocabulary.

Many words related to adult or explicit content are simply not present, so the model cannot understand them properly.

• This NSFW version adds those missing words to the tokenizer and trains the embeddings so the model actually understands a much wider range of prompts.
• Result: significantly better performance with explicit or adult-oriented prompts, especially when used together with NSFW LoRAs.

Why this specific upload?

The previous BF16 releases were broken in ComfyUI (missing tokenizer data).

This file has been manually fixed so it loads and works correctly in ComfyUI and other Wan workflows.

Original model: NSFW-API/NSFW-Wan-UMT5-XXL

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Fixed and shared for the community. Enjoy!