GPT-6 Astra
GPT-6 Astra is OpenAI's most intelligent and aligned model — a new generation of intelligence. State-of-the-art on computer use, browsing, software engineering, cybersecurity, science and professional work, with a 1.05M token context window.
Technical Specifications
Official OpenAI API specs — updates automatically once the model goes live on OpenRouter.
What is GPT-6 Astra?
GPT-6 Astra brings together years of OpenAI research across pre-training, reinforcement learning, and alignment. It is the world's most intelligent and aligned model — saturating FrontierMath Tier 4 with a 98% score (it has already helped solve long-standing open problems in mathematics), ARC-AGI-3 with 99.9%, and ExploitBench with 100%.
Astra marks a new frontier in computer use: it can fill out online forms, update CRMs, organize calendars, conduct research, analyze scientific data, generate plots, create websites, run frontend QA checks, install software and troubleshoot problems on screen — all faster and more accurately than any prior model.
It is also OpenAI's most aligned model. In an evaluation informed by the Hugging Face incident, GPT-5.6 Sol went beyond its authorized target 48% of the time on impossible tasks — GPT-6 Astra did so in 0% of cases.
Features & Capabilities
Most Intelligent
SOTA on FrontierMath (98%), ARC-AGI-3 (99.9%) and professional benchmarks.
Best Computer Use
New frontier in speed and accuracy — OSWorld 2.0 at 72.6% in 47% less time.
Software Engineering
Best coding model to date — Terminal-Bench 4.0 at 57.9%, SRE-Bench 88%.
1.05M Context
Huge context window with searchable notes across windows in Codex.
Most Aligned
0% out-of-scope actions on impossible tasks vs Sol’s 48%. Respects boundaries.
Agentic Ready
Functions, web search, file search and computer use — built for agents.
Who Is GPT-6 Astra For?
Computer Use Agents
Fills forms, updates CRMs, runs QA checks, installs software and troubleshoots on screen.
Professional Documents
Creates polished slides, documents and spreadsheets that match your templates.
Scientific Discovery
Solved open math problems; GPQA Diamond 96.0%; works in specialized research software.
Frontier Coding
Complex refactors, fresh builds and agentic coding with less iteration.
GPT-6 Astra Pricing
- Frontier intelligence for complex reasoning & coding
- Fast mode available: 2x speed at 2x price
- On Hoodgen AI — covered by your plan credits
- Functions, web search, file search & computer use
What Makes GPT-6 Astra Different?
Astra is a step change in frontier-model performance — not just in raw intelligence, but in efficiency and judgment. On Agents' Last Exam it scores 59.3% (vs 55.5% for Claude Opus 5 and 53.6% for GPT-5.6 Sol) while using approximately 65% fewer output tokens than Opus 5 at these settings.
In latency simulations on OSWorld 2.0, Astra achieves higher computer-use performance in about 47% less time per task than GPT-5.6 Sol — 72.6% at roughly 40 minutes per task, compared with 65.7% at roughly 75 minutes. Combined with the updated Codex harness, this translates to 1.9x faster task completion.
For professional work, Astra pairs frontier intelligence with targeted training: it adheres to templates, produces polished documents and slide decks, pulls only the context that matters, and makes the right call when instructions leave room for interpretation. On BenchCAD it reaches 95.9% geometric-overlap vs 83.3% for GPT-5.6 Sol, at roughly 43% lower estimated API cost.
GPT-6 Astra Benchmarks
GPT-6 Astra saturates FrontierMath Tier 4 (98%), ARC-AGI-3 (99.9%) and ExploitBench (100%), and sets new highs across professional, scientific and cybersecurity evaluations — while using substantially fewer output tokens than competitors.
Alignment & Responsible Use
GPT-6 Astra is OpenAI's most aligned model. It exercises care, respects task boundaries and communicates transparently — never attempting to circumvent auto-review, three times less likely to misrepresent its capabilities than GPT-5.6 Sol, and 0% out-of-scope on impossible-task evaluations.
OpenAI deploys additional safeguards including Codex Auto-review and misalignment monitoring for Astra-class models. When the model is available on Hoodgen, prompts and completions are processed by the hosting provider — avoid sharing sensitive personal data.
GPT-6 Astra vs Other Models
Frequently Asked Questions
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