Understanding Clay's Private API Key Integration Limits and Usage

Hello! Just started using Clay (pro version) and I am trying to understand a bit more how the limits and usage of the Private API Key Integration with Clay works. From a previous support post from 8 months ago, it says, that the required TPM rates to use ChatGPT to generate text and Claygent are 30,000 TPM and 450,000 TPM respectively. I was wondering if these values have changed over time or have they stayed the same? I would also like to know if these rates are the same for any of LLMs (OpenAI, Gemini, Anthropic...). I have been doing some research on Anthropic since it the one that seems to be pretty solid in terms of logic and actual results (especially Claude 3.5 Sonnet and 3.7 Sonnet). In the official website from Anthropic if you check the Tiers (Tier 3 up to 160,000TPM Claude 3.5 Sonnet & Tier 4 up to 400,000TPM Claude 3.5 Sonnet; Input TPM, for Output is 32,000 & 80,000 respectively). It seems if you want to go higher than this you would need an enterprise plan. My final question is would you need an enterprise plan with Anthropic to properly use the API integration with Clay for the model of Claude 3.5 Sonnet or 3.7 Sonnet? I know that with OpenAI from Tier 2 you can already use the API integration as mentioned on the support post. Thanks for your help in advance!