OpenAI
GPT-6 Astra
Announced Sep 3, 2026
A new generation for complex work
What could it do?
OpenAI announced improved computer use, software engineering, science and professional reasoning.
What changed?
Combined advances in pretraining, reinforcement learning and alignment.
Extended the range of difficult tasks supported by a general model.
Where it fell short
Rollout was phased. OpenAI’s internal math research model must not be assumed to be this public model.
Release facts were checked against the sources below. Performance claims belong to the developers; we have not independently tested these models.
Developer announcement or release logBenchmark results
A benchmark estimate, not a percentage or capability multiplier. Reasoning settings are not specified in this source table. Historical estimates can change in later snapshots.
Epoch AI methodology ↗Download the source snapshotChecked Oct 7, 2026 · CC BY 4.0Selected highest effort variant where available in the current table. Starred partial results are excluded. Claude fallback configurations can use other models when safeguards intervene.
Source: Artificial Analysis Intelligence Index ↗Download selected resultsChecked Oct 8, 2026One explicitly named variant per release. Scores come from the same Overall snapshot; preliminary entries and reported intervals are preserved. These are current ratings of earlier variants, not their launch day ratings.
Source: Text Arena ↗Download selected resultsChecked Oct 8, 2026