Fast
Input
$20.00
per 1M tokens
Output
$100.00
per 1M tokens
Cache Read
$2.00
per 1M tokens
Cache Write
$25.00
per 1M tokens
$10 off the fastest Kimi K3 and GLM 5.3 from Synthetic
Model details
GPT-6 Astra
GPT-6 Astra is OpenAI’s reasoning-focused model for difficult end-to-end work, combining advances in pre-training, reinforcement learning, and alignment. Rather than serving only as a conversational model, it is designed to plan, use software, revise intermediate work, and turn open-ended goals into polished documents, analyses, code, or other professional artifacts. Its published positioning centers on computer use, browsing, software engineering, science, cybersecurity, and knowledge work.
Astra’s practical advantage is strongest in sustained, tool-using workflows. OpenAI reports state-of-the-art results in several of these areas, including 97.6% on FrontierMath Tier 4 v2, 72.6% on OSWorld 2.0, and 100% on ExploitBench, while also showing strong results on Terminal-Bench Science, BrowseComp, GPQA Diamond, and very-long-context retrieval. Independent coverage still finds it less dominant on some broad aggregate measures, so the best fit is high-stakes agentic work where fewer retries, stronger execution, and deeper context matter more than a universal benchmark win.
OpenAIgpt-6-astragpt-astra
Quick Info
Powered by- Provider
- OpenAI
- Model key
- gpt-6-astra
- Release date
- Sep 4, 2026
- Last updated
- Sep 4, 2026
- Knowledge cutoff
- 2026-04-30
- Input modalities
- Output modalities
- Capabilities
Cost
- Input token cost
- $10.00
- Output token cost
- $50.00
Limits
- Input tokens
- 922,000 tokens
- Output tokens
- 128,000 tokens
- Context window
- 1,050,000 tokens
OpenCode
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Rates are shown per one million tokens. Combined means one million input plus one million output tokens.
Latest news about GPT-6 Astra
Ofox
CoverageBenchmark
OpenAI released GPT-6 Astra on September 3, 2026, framing it as "the world's most intelligent and aligned model" and the product of its largest training run to date, executed on more than 100,000 GPUs at the Stargate site in Texas. It is also the first release where earlier OpenAI models supervised the training of the Astra also becomes the first model to hit the "Critical" cybersecurity threshold under OpenAI's Preparedness Framework, which is why advanced cyber capabilities are being gated behind the Daybreak application-based program and the rollout is intentionally phased. Vellum notes that not every benchmark favors OpenAI: Met
Ofox
Coverage
OpenAI announced the phased rollout of GPT-6 Astra on September 3, 2026, with CEO Sam Altman calling it a "new capability level" that has changed his workflows and predicting "a boom of entrepreneurship, of creativity, of economic growth, of scientific discovery." Distribution channels for Astra include ChatGPT Plus, P Companies participating in OpenAI's application-based Daybreak cybersecurity program are first in line for access, because Astra is OpenAI's first model to reach the "Critical" internal cybersecurity threshold disclosed earlier in the week, with those advanced cyber capabilities explicitly limited. CNBC notes that two
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