https://openai.com/chatgpt/pricing/ - $0 / $20 / $200 / $25 (team) / custom enterprise pricing / on-demand API pricing

https://www.anthropic.com/pricing - $0 / $17 (if billed annually) / $20 (if billed monthly) / $100 / $25 (team) / custom enterprise pricing / on-demand API pricing

Sounds like tiers to me.

I should have specified less expensive tiers (below the $20 standard). A tier <= $10 would be great. Anything over $10 for casual use seems excessive (or at least from my perspective)