Chart of the Week

One chart worth your attention. A short take on AI, business, and building what comes next.

Newest first · Archive samples · Ian’s takes to come

Review · 2026-09-26 / Archive sample

AI cost declines, in context

Line chart comparing inflation-adjusted cost declines for AI, DNA sequencing, compute, lithium batteries, and electricity. The AI series includes an extrapolation back to 2021; methods and CC-BY credit appear in the original image.

Source: Epoch AI ↗

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Review · 2026-09-19 / Archive sample

AI spending and token share on OpenRouter

OpenRouter chart showing Anthropic, OpenAI, and Google combined weekly spending and token shares from September 2024 to September 2026, ending at 68 percent of spending and 27 percent of tokens.

Source: OpenRouter data · shared by Peter Walker ↗

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