aiaimodel.cards

GPT-6 Astra

Language modelCard summarized

Our most capable model for the most demanding work.

Active (latest)● Re-checked 12 Oct 2026 · 96 facts · 0 corrections · 2 unconfirmedSource: GPT-6 Astra System Card (175 pp)

Use it via API

$5,880 /month
$118 per 1K requests
RAG over docs: 12K in · 600 out · 50K requests/mo · 30% cached · change
Code exampleCompare

Where to call it

  • OpenAI APIgpt-6-astra

Supports

  • Image input
  • Streaming
  • Structured outputs
  • Reasoning control
  • Tool calling
  • Web search
  • Prompt caching
  • Batch API
Full feature support

Good for

  • Complex reasoning and coding
  • Computer use and browsing
  • Research and document creation

Watch out for

Overview

OpenAI · 05Astra, front

GPT-6 Astra

Our most capable model for the most demanding work.

Cost
$10.00 in
Context
1.05M
Input / output
$10.00 / $50.00
Max output
128K
Knows up to
April 2026
Released
3 Sep 2026

OpenAI's most capable broadly deployed model and its first to reach the Critical level of cybersecurity capability under the Preparedness Framework. OpenAI reports it is more robust to jailbreaks and prompt injection, and better aligned than GPT-5.6 Sol, but its chain of thought is harder to monitor. p.7–9

gpt-6-astra
Input / output per 1M
$10.00 / $50.00
Context window
1.05M
Max output
128K
Knows up to
April 2026
Reasoning
Reasoning, always on (effort low → max)
Weights
Closed

About this card. A model card is the maker's own account of a model: what it's for, how it was trained and tested, and where it falls short. This page condenses OpenAI's GPT-6 Astra System Card. Every claim carries its source page.