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The reference shelf. Evergreen explainers and data on AI prices, benchmarks and claims. The weekly news lives in the issues.

Explainer

What is cost per task? Why the cheapest AI model per token isn't the cheapest per job

Per-token prices tell you the rate, not the bill. Cost per task counts every token a model burns to finish a job. Here is how it works, with real numbers from GPT-6, Claude and Gemini.

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