GPT-6 Astra hands-on: 2x faster, stunning 3D frontends, coding on par with Claude

数字生命卡兹克 · wechat · 2026-09-05

A detailed first-day review of GPT-6 Astra by Chinese blogger 数字生命卡兹克:

Availability: Rolling out to all subscribers with 100% quota (vs Fable 5's 50% cap); much faster than GPT-5.6 Sol.
Speed: Tasks that took 3+ hours now finish far quicker; large system reviews 10 minutes; computer/browser use roughly 2x faster, though interaction still trails Grok and Gemini.
Frontend: One-prompt generation of detailed interactive 3D scenes (lunar rover, explorable house models with material/wireframe/floorplan modes) — a massive aesthetic leap.
Coding: The same project-scan prompt surfaced many previously missed performance issues, batch-fixed in 2 hours. New experimental cross-window notes let Codex retrieve old messages/tool results, reducing summary loss.
Practical advice: Simplify AGENT.md rules for smarter models — the author shares his trimmed config and a prompt for Codex to self-audit AGENTS.md/Skills; over-engineering and excessive testing notably reduced.
Weak spots: Blender control via Computer Use still shaky; Chinese writing still lacks "restraint", though less robotic than GPT-5.6 Sol.

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