DeepSeek, DigitalOcean, GMICloud, and NovitaAI were the only OpenRouter providers that didn't lead to major performance degradation for me

I did most of my testing in Firefox 156 and it's fine for me

This is a tool intended for exploring base language models. The best publicly available base model on the OpenAI API is "davinci-002". Not davinci, but davinci-002.