Test AI Models - Pangram Substitution Puzzle

Test and benchmark large language models with our interactive pangram-substitution puzzle. Measure LLM reasoning, prompt handling, and problem-solving skills in real time with a browser-based AI evaluation tool that doubles as a fun logic game.

Dec 5, 2025 v0.1

Test Config

Make sure to pick a unique seed number to ensure the LLM has not already solved the puzzle.

Current Levels Value:
Decimal: 0 Binary: 00000 Hex: 0x0
Active Levels:
No Levels selected

Check The Answer





The quick brown fox pangram lookup test. Create a language that maps real
words to words within the target word list. Then ask the LLM to figure out
the sentence and then fill in the missing word(s).
Levels measure the reasoning models. On auto setting (no super pro plans).
MakeLevel
ChatGPT4+1
5+2
5.1+0
Gemini2+1
2.5+2
3+2
Grok4+3
Kimik2+3
Sonnet4Unable-1
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