RankingOpenAI MRCR v2 8-needle 512K-1M · v2

OpenAI MRCR v2 8-needle 512K-1M · v2

Data updated 12 Sept 2026

Bucket
Long context
Unit
percent
Direction
Higher is better
Version
v2
Display harness
GPT-6 Astra: A new generation of intelligence
Board
https://openai.com/index/gpt-6-astra/

Compare published benchmark results with category weights →

Models

ModelScoreHarnessEvidenceSource-recorded date
GPT-6 AstraOpenAI96.3%
Reported settings & source

Maximum reported across reasoning efforts; OpenAI research environment or API; 8-needle 512K-1M

Provider-published result; comparator measurements are not automatically independently reproduced.

GPT-6 Astra: A new generation of intelligence · Long Context table / OpenAI MRCR v2 8-needle 512K-1M / GPT‑6 Astra · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06
GPT-5.6 SolOpenAI73.8%
Reported settings & source

Maximum reported across reasoning efforts; OpenAI research environment or API; 8-needle 512K-1M

Provider-published result; comparator measurements are not automatically independently reproduced.

GPT-6 Astra: A new generation of intelligence · Long Context table / OpenAI MRCR v2 8-needle 512K-1M / GPT‑5.6 Sol · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06
GPT-5.5OpenAI74%
Reported settings & source

Launch table reported configuration; per-cell reasoning effort unspecified; 8-needle 512K-1M

Provider-published result; comparator measurements are not automatically independently reproduced.

GPT-5.6: Frontier intelligence that scales with your ambition · Long Context table / OpenAI MRCR v2 8-needle 512K-1M / GPT‑5.5 · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
GPT-5.6 LunaOpenAI41.3%
Reported settings & source

Launch table reported configuration; per-cell reasoning effort unspecified; 8-needle 512K-1M

Provider-published result; comparator measurements are not automatically independently reproduced.

GPT-5.6: Frontier intelligence that scales with your ambition · Long Context table / OpenAI MRCR v2 8-needle 512K-1M / GPT‑5.6 Luna · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
GPT-5.6 SolOpenAI73.8%
Reported settings & source

Launch table reported configuration; per-cell reasoning effort unspecified; 8-needle 512K-1M

Provider-published result; comparator measurements are not automatically independently reproduced.

GPT-5.6: Frontier intelligence that scales with your ambition · Long Context table / OpenAI MRCR v2 8-needle 512K-1M / GPT‑5.6 Sol · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
GPT-5.6 TerraOpenAI72.5%
Reported settings & source

Launch table reported configuration; per-cell reasoning effort unspecified; 8-needle 512K-1M

Provider-published result; comparator measurements are not automatically independently reproduced.

GPT-5.6: Frontier intelligence that scales with your ambition · Long Context table / OpenAI MRCR v2 8-needle 512K-1M / GPT‑5.6 Terra · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06