Tokenomics Foundation launches Big-T Notation and Mind Map for AI spend tracking
The Tokenomics Foundation hosted its first conference, Tokenomicon + FinOps X, in Amsterdam on September 22–23, gathering over 500 practitioners focused on AI billing and token economics. The event highlighted challenges in proving value from AI budgets, with agentic coding emerging as the fastest-growing but least-understood cost driver for engineering teams. The Foundation introduced two key…
Key points
- Tokenomics Foundation released Big-T Notation to model token spend growth in complex AI workflows
- Mind Map standardizes AI supply chain terms for production, consumption, and value tracking
- Survey of 472 companies ($4.6T revenue) finds 43% can’t prove AI spend ROI, 27% lack spending visibility
Quesma contributed to both projects, advocating for standardized billing formats (like FOCUS 1.5) to track model IDs, token types (input/output/cached), and PrincipalIds for accountability. The Foundation also released a prompt cache explainer, demonstrating how reordering prompts can optimize caching and reduce costs. A survey of 472 respondents across 11 industries (totaling $4.6 trillion in revenue) revealed that 43% struggle to prove AI ROI, while 27% lack visibility into spending attribution. Clear ownership of AI economics correlates with measurable outcomes, the report noted. Quesma plans to expand its open-source Quesma Shipper for coding-agent session tracking and collaborate further with the Foundation’s working groups.
Token ecomonics in Amsterdam: Inside the first Tokenomicon
quesma.com · 25 September 2026
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