GPT-6 Astra in Practice: Tests, Use Cases, and Feedback

On Astra's launch day, a Japanese user asked it for an abstract, futuristic illustration welcoming Astra and shared the 5,010-character English prompt.

A satirical leaderboard post says GPT-6 Astra set a new SOTA of 6.0 on the Model Number Benchmark, 0.9 points ahead of Anthropic's newly released Fable 5.1.

The author says GPT-6 Astra has completely different blind spots from other models, so they route implementation to Astra and review to Fable or Sol.

A Japanese-language roundup covers GPT-6 Astra's announcement and messy rollout with an Altman apology, plus Nvidia's Hugging Face acquisition, simultaneous AI outages and four other stories.

On the same single-file three.js task, Astra cost $1.84, took 9m 56s and used 45k tokens, while Fable 5.1 cost $29.16, took 1h 12m and used 360k tokens; both needed a second round to run the full chain.

On Aikido's cybersecurity CVE benchmark, Astra hit 29/32 at pass@3, a new record, though the three runs cost nearly $4,000.

Arena shares Peter Gostev's initial take on GPT-6 Astra versus Claude Fable 5.1 and Fable 5 across cost, coding and benchmarks.

Microsoft says Astra is now available in Visual Studio for long-horizon autonomous coding and agentic tasks, planning, diagnosing and verifying its own results as it works.

An OpenAI staffer says some Plus and Business users won't have Astra access today and will receive a banked reset, also given to accounts created by 8pm PT.

A Turkish account shows a kart racing game built with GPT-6 Astra that runs directly in the browser with no installation.

VictorTaelin, author of HVM/Bend, says he wants to use Astra to audit Bend's code but keeps getting refusals, and publicly asks OpenAI to enable access.

OpenAI's launch post for GPT-6 Astra names four developer use cases and says the model combines computer use, asynchronous tool calling and mid-response steering.