1)I own 2x claude, 1x codex and 1x gemini. Whenever i need more AI usage, i buy another claude (smallest plan) and then have a script auto alternate between them. This is because cheapest subscription gives most weekly usage per $.

2)no, you dont need an API key if you know how to use your subscription to replace it

3)I tried many; from opencode, warp, paseo, orca to openclaw, hermes, etc. I always end up returning to the default claude and codex.

4) kinda an orchestration tool, i have one to oversee my entire business (Varyz AI), it constantly makes content, fixes bugs based on feedback and etc (spawning agents to do so).