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

GPT-6 Astra by OpenAI holds the best MRCR v2 (8-needle) (512K–1M) result among tracked models, at 96.3% (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) — 96.3%; 2. GPT-5.5 (OpenAI) — 74%; 3. GPT-5.6 Sol (OpenAI) — 73.8%; 4. GPT-5.6 Terra (OpenAI) — 72.5%; 5. GPT-5.6 Luna (OpenAI) — 41.3%.

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

6 tracked models have a published MRCR v2 (8-needle) (512K–1M) 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)512K–1M

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) (512K–1M) result among tracked models, at 96.3% (released Sep 3 2026). Higher scores are better on this benchmark.
: 1. GPT-6 Astra (OpenAI) — 96.3%; 2. GPT-5.5 (OpenAI) — 74%; 3. GPT-5.6 Sol (OpenAI) — 73.8%; 4. GPT-5.6 Terra (OpenAI) — 72.5%; 5. GPT-5.6 Luna (OpenAI) — 41.3%.
: 6 tracked models have a published MRCR v2 (8-needle) (512K–1M) 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.