OpenAI

GPT-6 Astra (xhigh)

GPT-6 Astra running at xhigh reasoning effort.

#5released Sep 3, 2026·Proprietary·Not disclosed
textimage1.1M ctxreasoning
Intelligence
87.0 #5
Top 1% tier
Output Speed
76 t/s
TTFT 380 ms · ITL 13.2 ms/tok
Blended price (3:1)
$20 /1M
In $10/M · Out $50/M
Context
1.1M
≈ 2,750 A4 pages · max out 131,072

Quality Domain Radar

6-Axis Frontier Evaluation vs Category Average & Flagship

GPT-6 Astra (xhigh)
Claude Mythos Preview (#1)
Average (68)
Coding (60)Mathematics (92)Hard Science (GPQA) (90)Agentic & Tool Use (91)Knowledge (MMLU) (45)Vision / Multimodal (95)

Radar axes are approximated from category scores where direct benchmark measurements are missing — see Methodology.

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Model Details

Release date
Sep 3, 2026
Parameters
Not disclosed
License
Proprietary
Context Window
1,100,000 tokens
Input Price
$10/M
Output Price
$50/M
Output Speed
76 t/s
Time to First Token
380 ms

Estimated monthly bill

Estimated monthly spend
$0.00
Calculating savings vs GPT-4o...

Cite & embed

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BibTeX
@misc{llmpodium2026gpt6astraxhigh,
  title = {Benchmark Analysis and Intelligence Evaluation of GPT-6 Astra (xhigh)},
  author = {LLMPodium Research},
  year = {2026},
  url = {https://llmpodium.com/models/gpt-6-astra-xhigh}
}

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