Guides

AI guides and model comparisons

Model marketing is a wall of adjectives. These guides plot the actual figures instead, so a claim is something you can look at. Every chart states where its numbers came from and when they were last checked.

Cost

What an LLM feature actually costs
Per-million-token pricing looks cheap until a chat feature resends its whole history on every turn. Here is the arithmetic that turns a price per million into a monthly bill, and the growth curve that catches people out.
Beginner·10 min·2026-09-08

Built in public.

Progress, revenue and mistakes get posted as they happen rather than saved up for a launch.

Follow @henrroga→All guides

AI guides and model comparisons

Cost

What an LLM feature actually costs

Built in public.