Current immutable release
Research release v2026-09-01
A permanent, human-readable record of this release's datasets, calculation scope, source files, licenses, and checksums. Cite this page when you need a stable description; use the manifest and file checksums to verify an analysis.
- Release ID
- v2026-09-01
- Published
- Answer history through
- Datasets
- 12
- Schema version
- 3
- Release status
- Current
Identity
One stable page for this release
The release ID and canonical page stay fixed. The downloadable files are manifest-listed and are never replaced after publication. A newer release receives a different ID and URL.
https://www.fiveletterwords.io/data/releases/v2026-09-01/v2026-09-01https://www.fiveletterwords.io/data/releases/v2026-09-01/manifest.jsonFiles and integrity
Download the datasets
Each listed file belongs to this exact release. Compare the SHA-256 value below with the downloaded bytes before relying on a long-lived local copy.
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Complete normal-mode opener benchmark
Every accepted guess, with six-turn outcomes, turn distributions, and first-guess partition measures.
14,855 records · CC BY 4.0-
opener-rankings.csv · 1,855,761 bytes
SHA-256 04bf06d7ef2f03e497bd6314f4b148f245d991c7bc26651aa5d9e5bea48347fa -
opener-rankings.json · 8,972,803 bytes
SHA-256 fb063a7ee0122e34366c6ae18179732155bbf236279b3b77fee5e45ae0498e30
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opener-rankings.csv · 1,855,761 bytes
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Six-turn simulation answer pool
The possible answers used in the six-turn opener test.
2,354 records · upstream source terms-
full-game-answer-pool.txt · 14,124 bytes
SHA-256 d3c082e210363b6fb821c3009008c74204a937e48b63fd3ad1ffc974c79838ae
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full-game-answer-pool.txt · 14,124 bytes
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Aggregate answer-history summary
Spoiler-free totals from completed Wordle puzzles in the archive.
5 records · CC BY 4.0-
answer-history-summary.csv · 158 bytes
SHA-256 c210581088a30ad476d9457f73b9aa55d5b400e9b1652c9aa5c7e3d001dad0a4 -
answer-history-summary.json · 729 bytes
SHA-256 ddd5f4ba49fa291f38fa7cb849e7dc89a0155c697d7929ce30c2303fa0d293b9
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answer-history-summary.csv · 158 bytes
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Letter frequencies in recorded answers
How often each letter appears in each position, without linking answers to dates.
151 records · CC BY 4.0-
letter-frequency.csv · 3,751 bytes
SHA-256 b36879f324786b9e829733da731acc19e832863b4acbf095541948e53b899ce6 -
letter-frequency.json · 10,797 bytes
SHA-256 77a3ac79a7b5f3b7359fb9a275686c2e433b588424f92da6d8becb6e3a25aa34
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letter-frequency.csv · 3,751 bytes
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Completed-answer repeat aggregates
Archive totals, annual repeat events, and first-to-latest gap bands without answer words or dates.
33 records · CC BY 4.0-
answer-repeats.csv · 1,566 bytes
SHA-256 a9bb120c8ab5823b4bdbd550ff04e5827452d8b8fdb0d20365af42e379b6a68f -
answer-repeats.json · 3,827 bytes
SHA-256 e8a0cb846bbe7da648e9d71c51c54e974009f26788872c75d83633fa4ffb05be
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answer-repeats.csv · 1,566 bytes
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Spoiler-safe puzzle difficulty rows
A dated pressure benchmark for every completed puzzle, with answer words omitted.
1,900 records · CC BY 4.0-
puzzle-difficulty.csv · 138,367 bytes
SHA-256 8db7a4053576bbdb545cff82ac99fe5931b9a9936cb74f4450ce39e58f83a5bd -
puzzle-difficulty.json · 691,569 bytes
SHA-256 9b82bd2423baccde44043ce861f4cd455eec183ae7b98b54822e1bd5d19af66f
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puzzle-difficulty.csv · 138,367 bytes
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Wordle #2000 newsroom fact sheet
Claim-by-claim milestone facts computed from this release's own completed rows.
14 records · CC BY 4.0-
wordle-2000-fact-sheet.csv · 5,393 bytes
SHA-256 2b3d416e57992c9819e63bc59cc60ef518d646b92d4969ef25e0954a9c6e6170 -
wordle-2000-fact-sheet.json · 7,850 bytes
SHA-256 dd2c61f3c69d974fbfb657f47a0a68e13179158a904f05ac3fea9f549f54b133
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wordle-2000-fact-sheet.csv · 5,393 bytes
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One-slot Wordle trap-family census
Every three-word-or-larger one-slot family, plus bounded probe and candidate-only plays.
342 records · CC BY 4.0-
trap-families.csv · 41,872 bytes
SHA-256 7f6422e241affc98f5e0e2205749811971abbc941a9a6fcac2d15fe1a434da38 -
trap-families.json · 162,342 bytes
SHA-256 e771388c752afe13297ad6960724f327866f5e44ec743e2dabf7aa9f05fc64bd
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trap-families.csv · 41,872 bytes
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Popular-opener feedback branch atlas
Every reachable first-turn result for 40 famous and leading opening words.
5,152 records · CC BY 4.0-
opener-feedback-branches.csv · 214,047 bytes
SHA-256 bfacf64ef5f7aaebde7c380fcf55acf83392ae2121239d318c1df0b511a77972 -
opener-feedback-branches.json · 884,525 bytes
SHA-256 32c9e13623211b7deecd8c7f4d9889f661ccb6ed23882efd2633cc32e8b80bbe
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opener-feedback-branches.csv · 214,047 bytes
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Player-facing vocabulary opener benchmark
Opening benchmarks filtered through the site's player-facing vocabulary policy.
3,510 records · CC BY 4.0-
familiar-opener-benchmark.csv · 322,169 bytes
SHA-256 d5179881356808fa29f68be626178c763a65d64354e31bbbe00b626bbc9b839b -
familiar-opener-benchmark.json · 1,186,061 bytes
SHA-256 1b85e9c4fe915d331dc125f77d6318e3fb2025c5413cf8551d7b23dd9d711a33
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familiar-opener-benchmark.csv · 322,169 bytes
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Opening-pair leaders and Pareto frontier
The strongest opening pairs found by evaluating every pair among 250 candidate openers.
500 records · CC BY 4.0-
opening-pair-frontier.csv · 25,596 bytes
SHA-256 69eace5ab86333ffe0d83489ba6d5a2be16958f91b7daf1b2c9d816cd68730bf -
opening-pair-frontier.json · 123,564 bytes
SHA-256 2d166fdd3bdb3f8074d5455793c1cfd19f4338cfdadabd37384487e793a9037d
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opening-pair-frontier.csv · 25,596 bytes
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Research corpus data dictionary
Field types, nullability, and plain-language definitions for the release.
107 records · CC BY 4.0-
data-dictionary.csv · 8,900 bytes
SHA-256 1dce946108f0ab2854f6225b0bf19d52abf6cf3ebcdeb6f3da7774d256c99a31 -
data-dictionary.json · 15,921 bytes
SHA-256 cf18f1079113d5cd7401fc038b5c8a874c0dadeb793c7f7f78e195d0f2fad703
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data-dictionary.csv · 8,900 bytes
Documentation
Methods, provenance, and schemas
Start with the README and methods. The provenance record identifies the captured inputs, while the data dictionary and schema describe the fields.
Scope and limits
What this release does—and does not—claim
The derived statistics describe the captured word pools and documented solver procedures. They do not establish perfect play or a representative human score. Answer-history aggregates use only the stated cutoff. Where included, puzzle-difficulty rows omit answer words and preserved upstream inputs retain their source terms.
Citation
Cite the release
Link to this page so readers receive the visible scope and caveats as well as the downloads.
FiveLetterWords.io (2026-09-01). FiveLetterWords research release v2026-09-01 [Data set]. https://www.fiveletterwords.io/data/releases/v2026-09-01/
Release history
Other immutable releases
Use the newest release for current work. Older pages remain available so existing citations and reproduced analyses do not move.
- v2026-07-15, published 2026-07-15, answer history through 2026-07-14.
- v2026-07-13, published 2026-07-13, answer history through 2026-07-12.
- v2026-07-11, published 2026-07-11, answer history through 2026-07-10.
- v2026-07, published 2026-07-09, answer history through 2026-07-05.
Questions, corrections, and reuse
See the developer reference for rolling feeds and client rules, the press page for responsible research reuse, or email [email protected] to report a discrepancy.