{
  "schema_version": "1.0",
  "id": "archive:https://cursor.com/blog/grok-4-5",
  "slug": "grok-4-5-1n0zgxx",
  "url": "https://feed7.dev/p/grok-4-5-1n0zgxx",
  "title": "Introducing Grok 4.5",
  "why_included": "Grok 4.5 extends Cursor’s model pool to long-running tool work beyond coding, but its CursorBench result is excluded because an earlier Cursor code snapshot entered training.",
  "summary": "**Grok 4.5** is a mixture-of-experts model trained on Cursor interactions plus broader STEM and knowledge work. It is available across Cursor desktop, web, iOS, CLI, and SDK, with a base price of **$2/M input and $6/M output tokens**.",
  "practical_implication": "Try it where an agent must investigate, use tools, recover, and verify across a long task. Keep Composer 2.5 in model-selection tests because Cursor positions the two as different weight classes rather than a direct replacement.",
  "agent_context": "**Grok 4.5** is a mixture-of-experts model trained on Cursor interactions plus broader STEM and knowledge work. It is available across Cursor desktop, web, iOS, CLI, and SDK, with a base price of **$2/M input and $6/M output tokens**.\n\nTry it where an agent must investigate, use tools, recover, and verify across a long task. Keep Composer 2.5 in model-selection tests because Cursor positions the two as different weight classes rather than a direct replacement.\n\nDo not use its CursorBench standing as evidence: an earlier Cursor codebase snapshot entered training, and the impact is unknown. Cursor excluded that result and says the data was removed for future models.",
  "source": {
    "name": "Cursor",
    "url": "https://cursor.com/blog/grok-4-5",
    "published_at": null
  },
  "source_class": "blog_post",
  "content_type": "Engineering Post",
  "layer": "model",
  "domains": [
    "coding",
    "research"
  ],
  "topics": [
    "reasoning",
    "model-selection",
    "coding-agents"
  ],
  "verification": {
    "status": "official_source",
    "label": "Official Source",
    "method": "source_feed",
    "verified_at": null
  },
  "uncertainty": [
    "Do not use its CursorBench standing as evidence: an earlier Cursor codebase snapshot entered training, and the impact is unknown. Cursor excluded that result and says the data was removed for future models."
  ],
  "lifecycle": "Current",
  "published_at": null,
  "modified_at": null,
  "supersedes": [],
  "expires_at": null,
  "formats": {
    "html": "https://feed7.dev/p/grok-4-5-1n0zgxx",
    "json": "https://feed7.dev/p/grok-4-5-1n0zgxx.json",
    "markdown": "https://feed7.dev/p/grok-4-5-1n0zgxx.md"
  }
}