Opener Lab

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92.1%

of words eliminated

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How KEFIR performs

Played first, KEFIR removes about 92.1% of the possible-answer list on average and scores 4.48 bits of information. Its first-turn information ranks #7,312 out of 14,855 Wordle guesses tested. Roughly 26% of the time at least one letter lands in the right spot.

Tried against 1,877 past Wordle answers, KEFIR left an average of 186 possible answers standing after the first guess. Its largest group in that replay came on August 1, 2026, when the answer was SLUSH and 433 candidates survived. It has been the daily answer once.

First-guess odds

Outcome	KEFIR
First-turn solve*	0.04%
At least one green	25.8%
Any green or yellow	81.7%
Whole row gray	18.3%
Worst case answers left	433

*Treating every word in the possible-answer list as equally likely.

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Understanding results

Elimination %: How much of the possible-answer list the guess rules out on average.
Avg turns: Average guesses needed by the same solver in games it finished within six.
Win rate: Share of answers the solver finished within six guesses.
Information: First-turn entropy in bits; higher means more informative feedback on average.
Tier: A band for first-turn information only: S is 5.8 bits or more, A 5.4, B 4.8, C 4.0, F below that. It describes the opening row, so a tier A word can still lead the six-turn table below.

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How KEFIR performs

First-guess odds