Notes on model choices, pricing edges, and practical AI workflows.
OpenAI added ads to ChatGPT's free tier. A practical comparison of ad-free AI chat alternatives, pricing models, and when pay-as-you-go beats a subscription.
A model-by-model guide to accessing Opus 4.6, GPT-5.4, and Gemini 3 without a monthly subscription. What each model does best and how pay-as-you-go works.
A clear definition of pay-as-you-go AI chat: who should use it, how it compares to subscriptions, and where this model works best.
A practical framework for evaluating AI subscriptions versus usage-based chat, with a focus on irregular demand and switching costs.
A practical guide to pay-as-you-go AI chat: how per-use pricing changes cost control, when it is useful, and when a subscription may still make sense.
A practical guide to using multiple AI models in one workflow. Compare model strengths and reduce unnecessary cost with task-based routing.