If you're taking about the quota bar. That is only measuring your premium request usage (models with a #.#x multiplier next to the name). If you only use the free models and code completion you won't actually consume any "usage". If you use AI code review that consumes a single request (now). Same with the Github Copilot web chat, if you use a free model, it doesn't count, if you use a premium model you get charged the usage cost.