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GCF vs JSON Token Benchmark for excel-mcp-server
Date: 2026-06-17 19:46 UTC
Token estimator: max(1, len(text) // 4)
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Scenario                         JSON tok    GCF tok    Saved  Reduction
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Small (10 rows x 5 cols)            2,006        799   +1,207      60.2%
Medium (50 rows x 10 cols)         20,170      8,156  +12,014      59.6%
Large (100 rows x 15 cols)         60,666     24,772  +35,894      59.2%
XL (250 rows x 20 cols)           204,424     85,366 +119,058      58.2%
XXL (500 rows x 20 cols)          410,053    172,218 +237,835      58.0%
------------------------------------------------------------------------
TOTAL                             697,319    291,311 +406,008      58.2%

GCF = Graph Compact Format (https://github.com/blackwell-systems/gcf)
gcf-python v2.1.0 | encode_generic(data)
