{
  "$type": "site.standard.document",
  "bskyPostRef": {
    "cid": "bafyreifxlvzsv7fnzcmuapgtwug7sueekzg4rsvgckgf7r556x6tfqbpmm",
    "uri": "at://did:plc:avkh7zze5iapdkk6naaunrjn/app.bsky.feed.post/3mlrbwyb3jug2"
  },
  "path": "/260513/p46#a260513p46",
  "publishedAt": "2026-05-13T21:00:56.000Z",
  "site": "https://www.techmeme.com",
  "tags": [
    "AI Security Institute",
    "Mythos Preview is the first AI model to complete both of AISI's cyber ranges, which measure models' cyberattack capabilities; GPT-5.5 solved only one of them"
  ],
  "textContent": "AI Security Institute:\n**Mythos Preview is the first AI model to complete both of AISI's cyber ranges, which measure models' cyberattack capabilities; GPT-5.5 solved only one of them** — In February 2026, we internally estimated that the length of cyber tasks AI models could complete had doubled every 4.7 months since late 2024 …",
  "title": "Mythos Preview is the first AI model to complete both of AISI's cyber ranges, which measure models' cyberattack capabilities; GPT-5.5 solved only one of them (AI Security Institute)"
}