Just the Pro Plan Claude Code on its own? Maybe you could last a full day on just using Sonnet. Maybe one Opus dab in the morning to plan your Haiku/Sonnet day?

I have Pro Claude, Plus GPT and Pro Gemini. When one runs out I switch to another project on the next LLM. If I really need a task finished I'll restart it on another LLM, but I'm loathe to do that as it eats tokens just getting back up to speed.