Decide upon the process steps that will be in the scope of the model. Try to ensure the scope is manageable with, ideally, less than 10 process steps defined.

For prompts up to 200,000 tokens, Gemini 2.5 Pro costs $1.25 per million input tokens (roughly 750,000 words, longer than the entire “Lord of The Rings” series) and $10 per million output tokens.

GPT-4.5 costs $75 per million input tokens and $150 per million output tokens through the API, compared to GPT-4o's $2.50 per million input tokens and $10 per million output tokens.