Going from Thai to Kazakh (าะฐะทะฐาัะฐ) has a composite linguistic distance of 93% (heuristic estimate). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Thai โ Cyrillic/Latin
Tai-Kadai โ Turkic
The 5 languages with the lowest linguistic distance from Thai:
A quick 3-question check between Thai and Kazakh. No signup.