Practical Data

Model pricing

Prices are lower-is-better and span two orders of magnitude, so they get a log scale. The two vendor tables share one scale, and Category reads as an ordered set of grades.

docs.github.com

OpenAI
Model	Category	Input	Cached input	Output
GPT-5 mini	Lightweight	$0.25	$0.025	$2.00
GPT-5.3-Codex	Powerful	$1.75	$0.175	$14.00
GPT-5.4	Versatile	$2.50	$0.25	$15.00
GPT-5.4	Versatile	$5.00	$0.50	$22.50
GPT-5.4 mini	Lightweight	$0.75	$0.075	$4.50
GPT-5.4 nano	Lightweight	$0.20	$0.02	$1.25
GPT-5.5	Powerful	$5.00	$0.50	$30.00
GPT-5.5	Powerful	$10.00	$1.00	$45.00
GPT-5.6 Luna	Lightweight	$0.20	$0.02	$1.20
GPT-5.6 Luna	Lightweight	$0.40	$0.04	$1.80
Ignorednames or versions	Ordered labelslightweight → versatile → powerful	Amountlower is better · log scale · shared scale	Amountlower is better · log scale · shared scale	Amountlower is better · log scale · shared scale

Anthropic
Model	Category	Input	Cached input	Output
Claude Haiku 4.5	Versatile	$1.00	$0.10	$5.00
Claude Sonnet 4	Versatile	$3.00	$0.30	$15.00
Claude Sonnet 4.6	Versatile	$3.00	$0.30	$15.00
Claude Opus 4.8	Powerful	$5.00	$0.50	$25.00
Claude Opus 5	Powerful	$5.00	$0.50	$25.00
Claude Opus 5.5	Powerful	$4.00	$0.20	$20.00
Claude Sonnet 5	Versatile	$2.00	$0.20	$10.00
Claude Sonnet 5.5	Versatile	$2.00	$0.20	$10.00
Ignorednames or versions	Ordered labelslightweight → versatile → powerful	Amountlower is better · log scale · shared scale	Amountlower is better · log scale · shared scale	Amountlower is better · log scale · shared scale

Pitching stats

ERA, WHIP and FIP are lower-is-better; strikeouts per nine are higher-is-better. Season and age are numbers, but they place a row in time, so they stay plain.

baseball-reference.com

Standard Pitching Table
Season	Age	Team	W	L	ERA	IP	SO	WHIP	FIP	ERA+	SO9
2020	23	DET	1	4	5.63	32.0	37	1.219	5.75	81	10.4
2021	24	DET	8	12	4.34	149.1	164	1.259	5.09	98	9.9
2022	25	DET	7	8	3.52	117.2	117	1.156	2.96	111	8.9
2023	26	DET	7	3	2.80	80.1	102	0.896	2.00	155	11.4
2024	27	DET	18	4	2.39	192.0	228	0.922	2.49	174	10.7
2025	28	DET	13	6	2.21	195.1	241	0.891	2.45	185	11.1
2026	29	2TM	12	7	2.72	158.2	186	0.964	2.51	155	10.6
2026	29	DET	7	5	2.79	96.2	116	0.910	2.60	151	10.8
2026	29	LAD	5	2	2.61	62.0	70	1.048	2.36	162	10.2
Ignoreda point in time (year, season, age)	Ignoreda point in time (year, season, age)	Ignoredlabels with no natural order	Amounthigher is better · log scale	Amountlower is better · linear	Amountlower is better · linear	Amounthigher is better · linear	Amounthigher is better · linear	Amountlower is better · linear	Amountlower is better · linear	Amounthigher is better · linear	Amounthigher is better · linear

Pace of play

Game length (2:41) and time between plays (2:11) are read as clock durations: 3:00 is one more than 2:59. Shorter is better, so the 2023 pitch clock shows up as a wall of green.

baseball-reference.com

Time of Game For Season
Year	G	AvgTime	%≥3:30	Avg Tm Btwn PA	Avg Tm Btwn BIP
2026	2218	2:42	0.5	2:10	3:15
2025	2216	2:38	0.1	2:08	3:10
2024	2209	2:36	0.3	2:06	3:09
2023	2226	2:39	0.4	2:08	3:13
2022	2204	3:03	10.5	2:29	3:42
2021	2089	3:10	18.7	2:33	3:52
2020	720	3:07	15.6	2:31	3:51
2019	2211	3:05	13.5	2:28	3:43
2018	2210	3:00	8.9	2:25	3:37
2017	2246	3:05	12.2	2:28	3:39
2016	2236	3:00	8.3	2:25	3:32
2015	2213	2:56	7.1	2:23	3:25
2014	2194	3:02	11.1	2:28	3:33
2013	2180	2:58	8.3	2:25	3:27
2012	2231	2:55	5.8	2:22	3:24
2011	2185	2:51	4.5	2:19	3:16
Ignoreda point in time (year, season, age)	Amountno better direction · linear	Amountlower is better · linear	Amountlower is better · log scale	Amountlower is better · linear	Amountlower is better · linear

Benchmarks, by row

Here each row is a benchmark and each column a model, so the model judges the table row-wise: every benchmark gets its own scale, and each row's best model is the greenest.

blog.cloudflare.com

Benchmark scores by model
Benchmark	Clef	Clef-flash	Jev	DiffusionGemma Jev	Kev 9B	Laya
BFCL · case exact	98.47	98.76	95.75	96.52	94.51	38.13
ToolRet · nDCG@10	69.19	66.43	65.28	61.21	64.26	12.69
API-Bank · accuracy	91.93	93.11	88.19	83.66	56.30	11.41
Home appliances · case exact	82.95	97.73	52.27	42.05	25.00	0.00
When2Call · accuracy	72.37	65.58	80.97	75.44	49.62	11.94
BANKING77 · macro-F1	94.20	90.93	79.74	74.28	84.83	14.29
CLINC150+OOS · macro-F1	97.43	66.77	89.27	83.49	79.03	3.19
BRIGHT · nDCG@10	45.91	39.26	47.52	42.94	38.53	19.90
Amazon ESCI · macro-F1	57.48	57.39	55.21	53.37	49.22	24.40
PhishNChips · accuracy	79.60	75.05	62.55	85.35	50.75	50.15
Ignorednames or versions	Amounthigher is better · linear	Amounthigher is better · linear	Amounthigher is better · linear	Amounthigher is better · linear	Amounthigher is better · linear	Amounthigher is better · linear

Card prices

Rarity is ordered Common → Uncommon → Rare → Mythic from pairwise judgments. Prices run from $4 to $237, so they get a log scale, read as lower-is-better; weekly change reads as higher-is-better.

mtggoldfish.com

Price History
Card	Set	Rarity	Price	Weekly (%)
Mox Opal #223	MM2	Mythic	237.09	-4.00%
Sheoldred, the Apocalypse #107	DMU	Mythic	105.01	0.00%
Mox Amber #224	DOM	Mythic	92.22	-2.00%
Gemstone Caverns #274	PLIST	Rare	63.15	-1.00%
Minamo, School at Water's Edge #118 Foil	FMB1	Rare	57.87	0.00%
Cavern of Souls #269	LCI	Mythic	51.74	0.00%
Boseiju, Who Endures #266	NEO	Rare	51.40	0.00%
Amulet of Vigor #121	WWK	Rare	50.99	0.00%
Claws of Gix #107	TSB	Special	12.52	+5.00%
Untimely Malfunction #161	DSK	Uncommon	9.74	+6.00%
Sink into Stupor #241	MH3	Uncommon	8.82	+3.00%
Relic of Progenitus #213	MMA	Uncommon	7.48	-3.00%
Faerie Macabre #86	MMA	Common	6.96	0.00%
Pyretic Ritual #153	M11	Common	6.50	+7.00%
Desperate Ritual #163	CHK	Common	6.46	0.00%
Witch Enchanter #239	MH3	Uncommon	5.99	+1.00%
Lorien Revealed #60	LTR	Common	4.59	-7.00%
Ignorednames or free text	Ignorednames or free text	Ordered labelscommon → uncommon → rare → special → mythic	Amountlower is better · log scale	Amounthigher is better · linear

Hurricanes

Storm classification is text, but the model orders it: Tropical storm, then Category 1 through 5.

en.wikipedia.org

Costliest Atlantic hurricanes
Name	Nominal damage (Billions USD)	Season	Storm classification at peak intensity
Katrina	$125.0	2005	Category 5 hurricane
Harvey	$125.0	2017	Category 4 hurricane
Ian	$112.0	2022	Category 5 hurricane
Maria	$91.6	2017	Category 5 hurricane
Helene	$78.7	2024	Category 4 hurricane
Irma	$77.2	2017	Category 5 hurricane
Ida	$75.3	2021	Category 4 hurricane
Sandy	$68.7	2012	Category 3 hurricane
Ike	$38.0	2008	Category 4 hurricane
Milton	$34.6	2024	Category 5 hurricane
Andrew	$27.3	1992	Category 5 hurricane
Wilma	$26.5	2005	Category 5 hurricane
Ivan	$26.1	2004	Category 5 hurricane
Michael	$25.5	2018	Category 5 hurricane
Florence	$24.2	2018	Category 4 hurricane
Laura	$23.3	2020	Category 4 hurricane
Ignorednames or free text	Amountlower is better · linear	Ignoreda point in time (year, season, age)	Ordered labelscategory 3 hurricane → category 4 hurricane → category 5 hurricane

Populations

The first row is the World total. The model flags it as an aggregate, so it is left out of the scale instead of washing out every country.

en.wikipedia.org

List of countries and territories by total population
Location	Population	% of world	Date
World	8,232,000,000	100%	13 Jun 2025
India	1,429,404,000	17.3%	1 Jul 2026
China	1,404,890,000	17.0%	31 Dec 2025
United States	341,784,857	4.1%	1 Jul 2025
Indonesia	288,315,089	3.5%	31 Dec 2025
Pakistan	241,499,431	2.9%	1 Mar 2023
Nigeria	223,800,000	2.7%	1 Jul 2023
Brazil	214,211,951	2.6%	1 Jul 2026
Bangladesh	169,828,911	2.1%	14 Jun 2022
Russia	146,028,325	1.8%	1 Jan 2025
Mexico	131,231,919	1.6%	30 Jun 2026
Japan	122,650,000	1.5%	1 Sep 2026
Ignorednames	Amountno better direction · log scale	Amountno better direction · log scale	Datesearliest to latest

Rows judged to be totals and kept out of the scale: "World".

Numbers that aren't amounts

Jersey numbers, birth years and zip codes are numeric but not comparable, so they stay plain. Height and scoring are measures.

synthetic test page

Roster
Player	Jersey #	Born	Zip code	Height (in)	Points per game
Ada Park	23	1998	94110	74	21.4
Ben Ortiz	7	2001	10027	79	12.9
Cy Moreau	11	1995	60614	81	8.2
Di Okafor	34	1999	30307	77	17.5
Eli Sato	0	2003	98103	72	5.1
Ignoredlabels with no natural order	Ignoredan identifier, not an amount	Ignoreda point in time (year, season, age)	Ignoredan identifier, not an amount	Amountno better direction · linear	Amounthigher is better · linear

How it works

Read

Code extracts each table, resolves merged cells, and parses values: $0.025, .312, 6' 6", 1.5B, 20–25, 2:59, ≤ 272K. A 2:41 game length is a duration; a 7:05 start time is not. It computes the ranges and spreads, and describes them in words.
Judge

A System One model (Jev) answers narrow, typed questions with probabilities:
- Is this column an amount, an identifier, a time, a rank, or a cutoff?
- Is a higher value better, worse, or neither?
- Do ratios matter more than differences (log scale)?
- Are these labels ordered grades? Which of two is the lower grade?
- Is this row a total? Do same-named columns in other tables share a scale?
- Are values compared down each column, or across each row?
Paint

D3 maps each value onto a ColorBrewer scale and blends it over the page's own background. Every cell keeps WCAG AA text contrast, and the extension restores the page exactly when you turn it off.

165 / 165: hand-labeled columns shaded or left plain correctly, across 21 test pages (a regression check, not an accuracy estimate)
81 / 81: directions of "better" judged correctly
~$0.001: typical cost to judge a page; repeat visits are free

Open source, top to bottom.

Practical Data is MIT-licensed. The extension, the questions it asks the model, the test pages and the recorded answers are all on GitHub.

Read what you install

The store package is built unminified from the same repository, so the code running in your browser reads like the source.
No key needed

A free endpoint judges tables without a key and keeps only the answers and anonymous counts. With your own key, table text goes straight to your provider and nothing passes through the author. The extension has no analytics or telemetry. Privacy policy
Check the claims yourself

One command replays every recorded judgment offline: unit tests, the hand-labeled eval, and 21 pages in a real browser. No key needed.

$ git clone https://github.com/philrenaud/practical-data
$ cd practical-data && npm install
$ npx playwright install chromium
$ npm run check

View the source on GitHub See the core data tests Report a misread table How the questions are designed

Install

Install Practical Data from the Chrome Web Store.
It works without a key. To use your own, paste a TypeSafe API key on the options page.

Tables are judged as they scroll into view, up to 200 per page. Table text (headers, sample values, a few rows) is sent to be judged, through the free endpoint or straight to your own provider; nothing is sent for sites you turn off. The free endpoint has a daily allowance per browser. A key gives unlimited use, and a typical page costs about a tenth of a cent on it. The toolbar popup turns a page or a whole site off, and ⌥⇧H toggles the current page.

Examples

How it works

Read

Judge

Paint

Open source, top to bottom.

Read what you install

No key needed

Check the claims yourself

Install