Ask HN: Why does OpenAI wants us to move away from text-DaVinci-003?

Here's what they mention:

> Because gpt-3.5-turbo performs at a similar capability to text-davinci-003 but at 10% the price per token, we recommend gpt-3.5-turbo for most use cases.

Is capability to support trained models only additional advantage of da-vinci-003?