ISON - Token-Efficient Data Format for AI & LLMs

Open Source Data Format for AI

Optimize What You Inject
Into LLM Context

ISON is a community-driven format designed to help you inject structured data into LLMs more efficiently. Better context representation means better comprehension, more relevant responses, and room for what matters.

Get Started Try Playground View on GitHub

# ~70% more context capacity than JSON
table.users
id:int  name        email                  role      active:bool
1       Alice       alice@company.com      admin     true
2       Bob         bob@company.com        developer true
3       Charlie     charlie@company.com    designer  false

table.projects
id:int  name            owner   status
101     "AI Platform"   :1      active
102     "Mobile App"    :2      planning
103     "Design System" :3      completed

{
  "users": [
    {"id": 1, "name": "Alice", "email": "alice@company.com", "role": "admin", "active": true},
    {"id": 2, "name": "Bob", "email": "bob@company.com", "role": "developer", "active": true},
    {"id": 3, "name": "Charlie", "email": "charlie@company.com", "role": "designer", "active": false}
  ],
  "projects": [
    {"id": 101, "name": "AI Platform", "owner": 1, "status": "active"},
    {"id": 102, "name": "Mobile App", "owner": 2, "status": "planning"},
    {"id": 103, "name": "Design System", "owner": 3, "status": "completed"}
  ]
}