Can I run humanizer on an RTX 5090?

Yes, just

Its published weights (23.9 GB) fit in the 28.8 GB an RTX 5090 can use, with room for ≈ 68K tokens of context.

Full analysis of humanizer Everything that runs on RTX 5090 Get the weights on Hugging Face

hf download jialinyyzz/humanizer

Files and context on RTX 5090

Each file of humanizer (and of GGUF versions the site has analyzed), and how much context fits next to it, with the context cache in 16-bit or 8-bit.

File	Size	On RTX 5090	Context (16-bit)	Context (8-bit)
As published	23.9 GB	Tight	68K	140K
BF16jialinyyzz/humanizer-GGUF	23.8 GB	Tight	32K	69K
Q8_0jialinyyzz/humanizer-GGUF	12.7 GB	Fits	115K	235K
Q6_Kjialinyyzz/humanizer-GGUF	10.0 GB	Fits	135K	256K
Q4_K_Mjialinyyzz/humanizer-GGUF	7.63 GB	Fits	153K	256K
IQ3_XXSjialinyyzz/humanizer-GGUF	5.59 GB	Fits	168K	256K
IQ2_XSjialinyyzz/humanizer-GGUF	3.89 GB	Fits	181K	256K

humanizer on other hardware

Popular models that run on RTX 5090

Assumes 90% of the card's memory is usable and at least 4K tokens of context for one conversation, with the context cache in 16-bit unless noted. Fits leaves at least 20% of that memory for context; Tight leaves less.