ASON 2.0 Benchmarks - Real-World Token Reduction Results vs JSON & TOON

ASON Wins

out of 5 datasets

Avg Reduction

vs JSON baseline

vs Toon

average difference

Tokenizer Model

Select which model's tokenizer to use for counting

Dataset	JSON	ASON	Toon	Winner	ASON vs JSON	Toon vs JSON

ASON wins 3 out of 5 datasets — Best for uniform arrays and mixed structures

Both formats struggle with non-uniform data — JSON is better for deeply nested/irregular structures

ASON consistently outperforms Toon — Even when ASON loses to JSON, it loses less than Toon

Token Approximation

Values are approximate (chars/4). For precise results:

cd nodejs-compressor && node benchmarks/toon-comparison-benchmark.js