Benchmarks

MRCR v2 8-needle (256K-512K)

Reasoningunit % · normalized over [0, 100]

OpenAI MRCR v2, 8-needle variant, 256K-512K token band — pure long-context retrieval: reproduce a target turn from among 8 needles spread across the context. Graded by sequence-matcher ratio.

#ModelSourceScoreNormalized

Score distribution

4 tracked results across the normalization window

0100

Score vs. parameters

Open-weights models, log-x params

No open-weights models with disclosed parameter counts have a score here yet.