Opener Lab
Compare CESTI
Pick a word to compare against.
How CESTI performs
Played first, CESTI removes about 94.8% of the possible-answer list on average and scores 5.07 bits of information. It is not on the possible-answer list, but it can still be useful because of the feedback groups it creates.
Tried against 1,859 past Wordle answers, CESTI left an average of 123 possible answers standing after the first guess. Its largest group in that replay came on June 30, 2026, when the answer was PUPPY and 318 candidates survived.
First-guess odds
| Outcome | CESTI |
|---|---|
| First-turn solve* | 0% |
| At least one green | 26.6% |
| Any green or yellow | 86.5% |
| Whole row gray | 13.5% |
| Worst case answers left | 318 |
*Treating every word in the possible-answer list as equally likely.