OpenAI MRCR v2 8-needle 256K-512K — leaderboard

OpenAI MRCR v2 8-needle long-context retrieval variant for the 256K-512K context range.

Source: openai.com.

Interactive version: theaggregate.ai/benchmark?slug=openai-mrcr-v2-8-needle-256k-512k · How the rankings work · Data refreshed daily, snapshot 2026-07-22.