GPT-6 Astra Pro
Parameters
Undisclosed
Context Length
1.05M
Modality
Multimodal
Architecture
Undisclosed
License
Proprietary
Release Date
4 Sept 2026
Knowledge Cutoff
-
API Pricing (per 1M)
Input: $10.00 · Output: $50.00
Evaluation Benchmarks
No evaluation benchmarks for GPT-6 Astra Pro available.
Rankings
Overall Rank
-
Coding Rank
-
About GPT-6 Astra Pro
GPT-6 Astra Pro is OpenAI's flagship frontier reasoning model operating in pro reasoning mode for demanding analytical tasks. It is designed for deep research, advanced software engineering, scientific problem solving, and long-horizon agentic workflows.
Technical Specifications
Architecture specifications are undisclosed for proprietary models.
About GPT-5.6
OpenAI's GPT-5.6 series represents the next-generation frontier intelligence family structured into three tiered variants: Sol (flagship reasoning and autonomous agents), Terra (balanced everyday production workhorse), and Luna (lightweight, ultrafast, cost-effective inference). It introduces new max and ultra (sub-agent coordination) reasoning modes, native programmatic tool calling, a 1M token context window with 128k output tokens, and a February 16, 2026 knowledge cutoff.