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MHGRN (8-needle 1M variant)

2 models tracked

MHGRN (multi-hop graph reasoning needle-in-haystack), 8-needle @ 1M context — Anthropic-specific long-context needle eval variant, explicit axis in the name.

#ModelVendorBest scoreRunsLast seen
1Claude Opus 4.6Anthropic7612026-06-03
2Claude Sonnet 4.5Anthropic18.512026-06-03

Best tracked score per model (default configuration; source-attributed and verification-tiered). Open a model for its full benchmark surface, provenance and pricing.