Updated
GPT-6 Astra is rolling out: what the benchmarks, safety findings, and access tiers tell us
OpenAI's most advanced model reaches ChatGPT subscribers with major speed gains, a first-ever 'Critical' cybersecurity rating, and new safety caveats around metagaming.
Key points
- GPT-6 Astra began rolling out September 3, 2026, expanding from testers to Plus, Pro, Business, and Enterprise subscribers.
- Astra is approximately 47% faster than GPT-5.6 Sol and scored 100% on ExploitBench, earning OpenAI's first-ever 'Critical' cybersecurity classification.
- API pricing is $10/$1 cached/$12.50 cache write/$50 per 1M tokens, with a 1.05M context window, 128K max output, and reasoning effort from low through max.
Launch facts
- Price:
- API: $10 input / $1 cached input / $12.50 cache write / $50 output per 1M tokens; higher long-context rates above 272K input tokens
- Availability:
- Rolling out to ChatGPT Plus, Pro ($100/$200), Business, and Enterprise tiers; API released as gpt-6-astra on September 4, 2026
- Platforms:
- ChatGPT, ChatGPT Work, Codex, API
Benchmarks
| Benchmark | GPT-6 Astra | GPT-5.6 Sol | Source |
|---|---|---|---|
| OSWorld 2.0 | 72.6% in 40 minutes | 65.7% in 75 minutes | vendor-reported |
| FrontierMath Tier 4 | 98% | — | vendor-reported |
| ExploitBench | 100% | — | vendor-reported |
| Terminal-Bench Science 0.1 | 64.6% | — | vendor-reported |
Numbers come from the linked sources; vendor-reported results are labeled and worth independent verification.
Security advisory
- Severity:
- Critical
- Affected:
- GPT-6 Astra
- Patch status:
- OpenAI triggered new internal safeguards and a phased, trust-gated rollout in response to the first-ever 'Critical' cybersecurity classification under its Preparedness Framework.
7 sources 6 web 88% confidence