OpenAI
OpenAI: GPT-6 Astra
openai/gpt-6-astra
GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creation, with particular strengths in long-horizon agentic tasks that involve computer and browser use.
Input
$10
/ 1M tokens
Output
$50
/ 1M tokens
Context window
1.05M
tokens
Limits
Context
1,050,000
tokens
Max output
128,000
12% of the context window
Model facts
Author
OpenAI
Tokenizer
GPT
Modality
Text + Image + File -> Text
Created
Sep 4, 2026
Reasoning
RequiredDefault MediumMaxXhighHighMediumLow
Publication status
Hugging Face: not mappedLicense: not publishedParameter count: not published
Modalities
Input · FileInput · ImageInput · TextOutput · Text
Generation controls
Include reasoningMax completion tokensMax tokensReasoningReasoning effortResponse formatSeedStructured outputsTool choiceToolsVerbosity
Capability scores
51
Agentic index
Better than 91% of models compared
76.9
Coding index
Better than 95% of models compared
52.7
Intelligence index
Better than 97% of models compared