What is the most cost-effective way to fine-tune a small language model in 2026?

If you want to customize a small AI model for a specific task, what is the cheapest and most efficient method to do it?

If we’re talking about what’s [probably the most cost-effective option ](https://huggingface.co/docs/accelerate/concept_guides/training_tpu)**theoretically**, I think it would be to tune the Trainer for TPUs. However, to put it mildly, it’s a hassle on a level where even a nightmare would be preferable…

If it were me, [I’d just go with Unsloth](https://unsloth.ai/docs/get-started/fine-tuning-for-beginners/unsloth-requirements#fine-tuning-vram-requirements) and a decent GPU.