MCP Atlas Leaderboard 2026: AI Models Ranked by Tool Orchestration
MCP Atlas leaderboard: Muse Spark 1.2 remains the highest vendor-published result at 90.3%. Added Claude Fable 5.1 at 87.2% ±2.05 from Scale Labs’ Sep 23 standardized snapshot. Cross-harness differences are noted. Updated September 25, 2026.
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· Abdeladim Fadheli