Which AI model scores highest on MRCR v2 (8-needle)?

GPT-6 Astra by OpenAI holds the best MRCR v2 (8-needle) (256K–512K) result among tracked models, at 100% (released Sep 3 2026). Higher scores are better on this benchmark.

What are the top 5 models on MRCR v2 (8-needle)?

1. GPT-6 Astra (OpenAI) — 100%; 2. GPT-5.6 Sol (OpenAI) — 91.5%; 3. GPT-5.6 Terra (OpenAI) — 89.6%; 4. GPT-5.5 (OpenAI) — 81.5%; 5. GPT-5.4 (OpenAI) — 57.5%.

How many models have a published MRCR v2 (8-needle) score?

6 tracked models have a published MRCR v2 (8-needle) (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

MRCR v2 (8-needle)256K–512K

mean match ratio for eight needles within the indicated context band

256K–512K 512K–1M

Rankings

Higher is better

MRCR v2 (8-needle) — frequently asked questions

: mean match ratio for eight needles within the indicated context band
: GPT-6 Astra by OpenAI holds the best MRCR v2 (8-needle) (256K–512K) result among tracked models, at 100% (released Sep 3 2026). Higher scores are better on this benchmark.
: 1. GPT-6 Astra (OpenAI) — 100%; 2. GPT-5.6 Sol (OpenAI) — 91.5%; 3. GPT-5.6 Terra (OpenAI) — 89.6%; 4. GPT-5.5 (OpenAI) — 81.5%; 5. GPT-5.4 (OpenAI) — 57.5%.
: 6 tracked models have a published MRCR v2 (8-needle) (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.