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MCP-Atlas mean claim coverage

Average coverage of required claims in answers produced during real-world MCP tool-use workflows.

2 models

Higher is better.

  1. 1Claude Opus 5Anthropic89.1
  2. 2Pokee-Isaac 28BPokee AI74.6
Higher is better. Bar colour: blue proprietary, orange open weights, green other.

About this benchmark

Metric
Mean claim coverage
Tasks
Production-like multi-server MCP workflows
Authors
Anthropic (2026)

Scores are as reported by model developers or evaluators and may use different settings (for example reasoning effort or tools). Compare with care.