OpenAI MRCR v2 8-needle 256K-512K

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

2rows
scoreprimary metric
2026-04-23sampled

Metadata

ID
openai_mrcr_v2_8_needle_256k_512k
Category
Long Context
Release
Unknown

Metrics

Score

Latest Results

Provider-published launch-post benchmark scores parsed from OpenAI's evaluation tables. Rows are marked self-reported and should be interpreted as source claims unless independently reproduced. OpenAI notes GPT evals were run with reasoning effort set to xhigh in a research environment.

Rank Subject Score Model Match Provenance Sampled
1 GPT-5.5 81.5% GPT-5.5
openai-gpt-5.5
 		Launch post 2026-04-23
2 GPT-5.4 57.5% GPT-5.4
openai-gpt-5.4
 		Launch post 2026-04-23