Which AI model scores highest on MRCR?

Muse Spark 1.3 by Meta holds the best MRCR (512k-1M) result among tracked models, at 98.1% (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) — 98.1%.

How many models have a published MRCR score?

1 tracked model has a published MRCR (512k-1M) score. Scores are the figures reported by each lab at that model's release, so this page is a record of results over time rather than a re-run leaderboard.

Long context

MRCR512k-1M

The same buried-detail retrieval test run on even longer inputs, from roughly 512k up to a million tokens. Scores usually slip as the document grows, so read it against the shorter span above. Higher is better.

256k-512k 512k-1M

Rankings

Higher is better

Muse Spark 1.3

98.1%

MRCR — frequently asked questions

What is MRCR?: The same buried-detail retrieval test run on even longer inputs, from roughly 512k up to a million tokens. Scores usually slip as the document grows, so read it against the shorter span above. Higher is better.
Which AI model scores highest on MRCR?: Muse Spark 1.3 by Meta holds the best MRCR (512k-1M) result among tracked models, at 98.1% (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) — 98.1%.
How many models have a published MRCR score?: 1 tracked model has a published MRCR (512k-1M) score. Scores are the figures reported by each lab at that model's release, so this page is a record of results over time rather than a re-run leaderboard.