Model
Luna 5.6
A language model provided by OpenAI to free-tier users, positioned between GPT-4o mini and flagship models. It is intended to maintain a baseline user experience while managing service costs.
Timeline (last 90 days)
Sep 29
OpenAI significantly cut prices for the Sol and Luna models in the GPT-6 family, slashing prices to nearly half of the previous generation's promotional price.
Expired65%
Sep 28
The free version of OpenAI's ChatGPT uses the Luna 5.6 model.
Unverified50%