Article index
Articles for the AI bill you can explain.
Practical guides and insights for tracking usage, choosing access paths, and making model decisions with the evidence in view.
Showing 6 of 6 articles — the source publishes one date for the whole response, so Updated is its own order.
Guide · Usage
How to Track Claude Code Usage, Tokens, and Spend
Claude Code can consume an individual Claude subscription, an eligible Team or Enterprise seat, or usage from an Anthropic Console API key. Those paths do not report cost in the same way. A…
Guide · Usage
How to Monitor OpenAI Codex Usage, Credits, and Token Costs
A Codex task launched through a ChatGPT entitlement or flexible credit balance is not the same billing stream as an application calling the OpenAI Platform API. The interfaces, permissions…
Guide · Cost
OpenRouter for Beginners: One API, Model Routing, and Cost Controls
OpenRouter offers one API surface for many models and providers. It is useful when an application needs model choice, provider fallbacks, centralized credits, or normalized reporting…
Guide · Cost
5 Legitimate Free AI API Options—and the Limits That Matter
A free AI API may provide a recurring quota, selected zero-price models, a daily compute allowance, or rate-limited prototyping access. Those are different products. None should be…
Guide · Cost
Lower LLM API Costs with Caching, Batch Jobs, and Output Caps
Start with a week of representative requests grouped by product workflow: support classification, document extraction, coding assistance, research, or content generation. Record input…
Guide · Architecture
A hybrid router for high-stakes agentic work
Begin with a narrow, reviewable split: route multi-file agentic coding and high-ambiguity tasks to the higher-capability lane; route stable classification, extraction, and straightforward…
Evidence key: Derived — the editorial source publishes one date for the whole response, so every row carries it.