I think GPT-01, being an earlier version of the GPT series, likely has some limitations compared to the newer models like GPT-2 and GPT-3. These limitations could include a smaller training dataset, less sophisticated language understanding capabilities, and potentially lower accuracy in generating human-like text.
However, GPT-01 could still be useful for certain tasks where high-level language understanding is not critical, or for educational purposes to understand the progression of AI language models over time. It could also be interesting to compare the outputs of GPT-01 with those of newer models to see how far the technology has advanced.
Overall, while GPT-01 may not be as advanced as its successors, it still has its own unique place in the evolution of AI language models.