GCF is the JSON alternative for AI pipelines. Full benchmark data proving it.
"JSON alternative" search interest is at all-time peak (Google Trends, May 2026). This page answers that search with 1,300+ evaluations across 10 models and 3 providers.
JSON was designed in 2001 for browser-to-server communication. At 500 records, LLMs score 54.1% comprehension accuracy on JSON. GPT-5.5 returns empty strings. Claude Opus spends 143 lines manually enumerating symbols and still gets the wrong answer.
GCF averages 91.2% comprehension accuracy. 79% fewer tokens. Four models hit 100%. Zero training required.
- Live site
- Full benchmarks
- GCF Specification
- GCF Proxy
- Playground
- betterthanjson.com
- Whitepaper (DOI: 10.5281/zenodo.20579817)
MIT - Dayna Blackwell