{"slug": "gpt-6-astra-beat-portal-start-to-finish-without-human-help-in-under-24-hours", "title": "GPT-6 Astra beat Portal start to finish without human help in under 24 hours", "summary": "OpenAI's GPT-6 Astra model autonomously completed the entire game Portal in 23 hours and 43 minutes without human assistance after the initial goal was set, according to developer cozyblaze. The run used at least $570 in token usage at Astra's list price, though cozyblaze utilized a $200 Codex subscription. The agent controlled the game via MCP and a modified SourcePauseTool, pausing to analyze screenshots and player data before resuming.", "body_md": "# GPT-6 Astra beat Portal start to finish without human help in under 24 hours\n\n**GPT-6 Astra has played through all of Portal on its own.** Developer [cozyblaze posted on X](https://x.com/cozyblazex/status/2096383114851533097) that the model navigated the full game and reached the credits without any human help after the initial goal was set. The run took about 23 hours and 43 minutes. [Token usage](https://github.com/cozyblaze/portal-agent/blob/main/evidence/summary.json) adds up to at least $570 at Astra's list price, though cozyblaze used a $200 Codex subscription. The model controls Portal through MCP and a modified SourcePauseTool that pauses the game while it thinks. During each pause, the agent sees screenshots, player position, and camera angle, picks its inputs, then lets the game resume. The video below has those pauses cut out.\n\n[Code and docs are on GitHub](https://github.com/cozyblaze/portal-agent/blob/main/docs/how-it-works.md). Cozyblaze noted that OpenAI set a goal in 2016 to [solve many different games with a single agent](https://the-decoder.com/openais-latest-agent-brings-its-long-standing-2017-vision-for-advanced-ai-capabilities-closer-to-reality/). Problems remain, but watching an agent beat a full game on its own is [a small taste of that original vision](https://x.com/cozyblazex/status/2096383117112262864). GPT-6 Astra is [\"the worst model we'll ever get,\"](https://x.com/cozyblazex/status/2096383118580351281) cozyblaze added.\n\n```\nAI News Without the Hype – Curated by Humans\n\n\t\t\t\t\tSubscribe to THE DECODER for ad-free reading, a weekly AI newsletter, our exclusive \"AI Radar\" frontier report six times a year, full archive access, and access to our comment section.\t\t\t\t\n\n\t\t\t\t\tSubscribe now\n```\n\n", "url": "https://wpnews.pro/news/gpt-6-astra-beat-portal-start-to-finish-without-human-help-in-under-24-hours", "canonical_source": "https://the-decoder.com/gpt-6-astra-beat-portal-start-to-finish-without-human-help-in-under-24-hours/", "published_at": "2026-09-07 17:39:32+00:00", "updated_at": "2026-09-07 18:01:02.017132+00:00", "lang": "en", "topics": ["artificial-intelligence", "ai-agents", "ai-products"], "entities": ["OpenAI", "GPT-6 Astra", "cozyblaze", "Portal", "MCP", "SourcePauseTool", "Codex", "GitHub"], "alternates": {"html": "https://wpnews.pro/news/gpt-6-astra-beat-portal-start-to-finish-without-human-help-in-under-24-hours", "markdown": "https://wpnews.pro/news/gpt-6-astra-beat-portal-start-to-finish-without-human-help-in-under-24-hours.md", "text": "https://wpnews.pro/news/gpt-6-astra-beat-portal-start-to-finish-without-human-help-in-under-24-hours.txt", "jsonld": "https://wpnews.pro/news/gpt-6-astra-beat-portal-start-to-finish-without-human-help-in-under-24-hours.jsonld"}}