Which AI model scores highest on MRCR?

Muse Spark 1.3 by Meta holds the best MRCR (256k-512k) result among tracked models, at 98.5% (released Sep 2 2026). Higher scores are better on this benchmark.

What are the top 1 models on MRCR?

1. Muse Spark 1.3 (Meta) — 98.5%.

How many models have a published MRCR score?

1 tracked model has a published MRCR (256k-512k) score. Scores are collected from published lab reports and benchmark sources, with recorded sources credited alongside the results. We do not re-run the evaluations.

Long context

MRCR256k-512k

Tests whether the AI can find specific details buried inside a very long document, here across inputs of roughly 256k to 512k tokens — several books' worth of text. Higher is better.

256k-512k 512k-1M

Rankings

Higher is better

Muse Spark 1.3

98.5%

MRCR — frequently asked questions

: Tests whether the AI can find specific details buried inside a very long document, here across inputs of roughly 256k to 512k tokens — several books' worth of text. Higher is better.
: Muse Spark 1.3 by Meta holds the best MRCR (256k-512k) result among tracked models, at 98.5% (released Sep 2 2026). Higher scores are better on this benchmark.
: 1. Muse Spark 1.3 (Meta) — 98.5%.
: 1 tracked model has a published MRCR (256k-512k) score. Scores are collected from published lab reports and benchmark sources, with recorded sources credited alongside the results. We do not re-run the evaluations.