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NumberReels

Chart type · Trend

Timeline

Milestones landing along a rail, spaced by elapsed time.

How to read it

Events run along the rail in order, and the distance between them is elapsed time; a ≈ break marks a gap too long to draw to scale. Chips on the rail say what changed between neighbours.

Best for

A sequence of events where the spacing between them matters.

When not to use it

The gaps are wildly uneven, which either squashes the dense stretch or strands the sparse one.

The common mistake

Spacing events evenly for tidiness, which quietly turns a timeline into a numbered list.

Example data

How fast AI models got cheap

Cost per million tokens at each capability step

$0$20$40$6020222023202420252026

Point at the chart, or focus it and use the arrow keys, to read each value.

Show
Scale
Period
This period
2022: $60 → 2026: $0.15 (−99.7%)
High $60 (2022) · Low $0.15 (2026)

The sample dataset this format ships with, drawn the way the site draws every clip's numbers — hover, sort or step through it. Figures as given by its source line: Illustrative example data.

1 timeline reel

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