OpenAI's most capable model for the hardest end-to-end work, with state-of-the-art performance in computer use, browsing, software engineering, science, and professional tasks. Astra is designed to carry long, multistep workflows across code, browsers, and professional software through to a finished result.
Added Sep 3, 2026
Context Window
1.1M
Max Output
128.0K
Avg output tokens (7d)
474 tokens
Input Price (Auto)
$10.00/1M
Output Price (Auto)
$50.00/1M
Cache Read (Auto)
$1.00/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
52.2
Coding Index
76.7
Agentic Index
51.6
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
93.9%
Better than 98% of models compared
HLE
Humanity's Last Exam
52.7%
Better than 98% of models compared
AA-LCR
Long context reasoning evaluation
79.7%
Better than 88% of models compared
GDPval-AA
Economically valuable tasks
54.2%
CritPt
Research-level physics reasoning
31.7%
Coding
SciCode
Python programming for scientific computing
54.2%
Better than 69% of models compared
Knowledge
AA-Omniscience Accuracy
Proportion of correctly answered questions
62.6%
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
51.3%
Last updated Sep 7, 2026
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