A side-by-side comparison of release history, capabilities, licensing and model sizes.
| Attribute |
 Pythia
|
 WizardLM
|
|---|---|---|
| Developer | EleutherAI, Together | WizardLM |
| Current generation | – | – |
| Initial release | 2023-02-13 | 2023-05-26 |
| Instruct tuned | No | Yes |
| Coding | No | No |
| Finetuning | Yes | Yes |
| Open source | Yes | Yes |
| License | Apache 2.0 | Noncommercial |
| Model sizes | 1B, 1.4B, 2.8B, 6.9B, 12B | 7B, 13B, 70B, 8x22B |
| Links |
The most recent (as of May 2023) effort from EleutherAI, Pythia is a set of LLMs trained on The Pile. While it appears to outperform OPT and GPTNeo, its performance against GPT-J is unclear. Versions of Pythia have also been instruct-tuned by the team at Together.
WizardLM is a variant of LLaMA trained with complex instructions.
WizardLM is a LLM based on LLaMA trained using a new method, called Evol-Instruct, on complex instruction data. By using AI to "evolve" instructions, WizardLM outperforms similar LLaMA-based LLMs trained on simpler instruction data. On the 6th of July, 2023, WizardLM V1.1 was released with significantly improved performance, and as of 15 April 2024, WizardLM-2 was released with state-of-the-art performance.
