[
  {
    "id": "FR-0006",
    "type": "post",
    "added": "2026-09-30",
    "title": "Opus 5.5 vs GPT-6.1 Sol: the Mentos and Coke experiment",
    "category": "sim",
    "models": [
      "claude-opus-5-5",
      "gpt-6-1-sol"
    ],
    "note": "Same prompt to both. The interesting part is how differently the two models model the physics.",
    "source": {
      "platform": "x",
      "id": "2105363571785789546",
      "url": "https://x.com/ivanainai/status/2105363571785789546",
      "author_name": "Ivana",
      "handle": "ivanainai",
      "avatar": "https://pbs.twimg.com/profile_images/2073932659886104576/Zq9FM__9_bigger.jpg",
      "verified": true
    },
    "posted": "2026-09-30T18:26:05.000Z",
    "text": "Opus 5.5 vs GPT 6.1 Sol.\n\nSame prompt. Same Mentos + Coke experiment.\n\nTwo very different ideas of physics.",
    "media": [
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        "url": "https://pbs.twimg.com/amplify_video_thumb/2105363204540956672/img/wqLvtvUs4iIteH-T.jpg",
        "w": 960,
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    "quoted": null,
    "metrics": {
      "likes": 12,
      "replies": 2
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  },
  {
    "id": "FR-0005",
    "type": "post",
    "added": "2026-09-30",
    "title": "Arena: frontier models building Ancient Rome, Q4 2025 to now",
    "category": "design",
    "models": [
      "claude-sonnet-5-5",
      "gpt-6-1"
    ],
    "note": "A progress reel from the Arena leaderboard team. Scores for Sonnet 5.5 and GPT-6.1 were still pending when this was posted.",
    "source": {
      "platform": "x",
      "id": "2104992775683113197",
      "url": "https://x.com/arena/status/2104992775683113197",
      "author_name": "Arena.ai",
      "handle": "arena",
      "avatar": "https://pbs.twimg.com/profile_images/2017015061454438400/iNKfXZ_I_bigger.jpg",
      "verified": true
    },
    "posted": "2026-09-29T17:52:41.000Z",
    "text": "Watch the progress of frontier models in bringing Ancient Rome to life on Arena, from Q4 2025 to now. \n\nScores for Claude Sonnet 5.5 by @AnthropicAI and GPT-6.1 by @OpenAI are coming soon. Real-world tasks from our global community of users power the Arena leaderboards. Head to",
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        "url": "https://pbs.twimg.com/amplify_video_thumb/2104989065531830272/img/r2XTZrxyxu4wAcrO.jpg",
        "w": 3840,
        "h": 2160,
        "video": "https://video.twimg.com/amplify_video/2104989065531830272/vid/avc1/3840x2160/aK6ikZWxBCTlX8fk.mp4"
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    "quoted": null,
    "metrics": {
      "likes": 221,
      "replies": 14
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  },
  {
    "id": "FR-0004",
    "type": "post",
    "added": "2026-09-30",
    "title": "Sonnet 5.5 vs GPT-6 Astra on a 3D scene",
    "category": "sim",
    "models": [
      "claude-sonnet-5-5",
      "gpt-6-astra"
    ],
    "note": "Our translation: Someone has already compared Sonnet 5.5 and GPT 6 Astra on 3D video. Astra was the one to beat for 3D a few weeks ago, and now it's been wiped out. Sonnet 5 is even cheaper. Anthropic feels more than a tier ahead of OpenAI right now.",
    "source": {
      "platform": "x",
      "id": "2104714683932647913",
      "url": "https://x.com/GKev1n/status/2104714683932647913",
      "author_name": "gKev1n",
      "handle": "GKev1n",
      "avatar": "https://pbs.twimg.com/profile_images/2100717851745394688/wg1dGu-F_bigger.jpg",
      "verified": true
    },
    "posted": "2026-09-28T23:27:39.000Z",
    "text": "已经有人用 Sonnet  5.5 与 GPT 6 Astra 做三维视频对比了。\n\n前几个礼拜风头无限，三维牛逼的 Astra 现在被秒的渣都不剩。。。。甚至 Sonnet 5 还更便宜。。。\n\n这太疯狂了，Anthropic 感觉现在已经领先 OpenAI  不止一个档位了。",
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        "w": 1200,
        "h": 1452,
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    ],
    "quoted": null,
    "metrics": {
      "likes": 1047,
      "replies": 58
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  },
  {
    "id": "FR-0003",
    "type": "post",
    "added": "2026-09-30",
    "title": "Sonnet 5.5 beats Opus 5.5 on a single-file HTML build",
    "category": "design",
    "models": [
      "claude-sonnet-5-5",
      "claude-opus-5-5"
    ],
    "note": "One prompt, one run each. A smaller model winning a single sample is interesting, but it isn't a trend yet.",
    "source": {
      "platform": "x",
      "id": "2104681499798938034",
      "url": "https://x.com/filicroval/status/2104681499798938034",
      "author_name": "filipe",
      "handle": "filicroval",
      "avatar": "https://pbs.twimg.com/profile_images/2053464202140893186/5Vgqbdlv_bigger.jpg",
      "verified": true
    },
    "posted": "2026-09-28T21:15:47.000Z",
    "text": "what the fuck, why is Sonnet 5.5 this good??\n\ngave Sonnet and Opus 5.5 the exact same prompt. Sonnet came back with this masterpiece. all in a SINGLE HTML file.\n\nSonnet won this one, it's not even close",
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        "w": 1920,
        "h": 2160,
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    ],
    "quoted": null,
    "metrics": {
      "likes": 2117,
      "replies": 75
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  },
  {
    "id": "FR-0002",
    "type": "post",
    "added": "2026-09-30",
    "title": "Sonnet 5.5 vs Sonnet 5: Tokyo voxel diorama",
    "category": "sim",
    "models": [
      "claude-sonnet-5-5",
      "claude-sonnet-5"
    ],
    "note": "Worth reading with the costs: Sonnet 5.5 used about 3× the output tokens and nearly 2× the spend for its version.",
    "source": {
      "platform": "x",
      "id": "2104677703475712225",
      "url": "https://x.com/AiBattle_/status/2104677703475712225",
      "author_name": "AiBattle",
      "handle": "AiBattle_",
      "avatar": "https://pbs.twimg.com/profile_images/1904171726260654080/xeXraCCx_bigger.jpg",
      "verified": true
    },
    "posted": "2026-09-28T21:00:42.000Z",
    "text": "Claude Sonnet 5.5 VS Sonnet 5 - Tokyo Voxel Diorama\n\nReally Impressive output from Sonnet 5.5\n\nUsage:\n\nSonnet 5.5 (High):\n\n- Total Cost = $9.23\n- Duration = 49m 5s\n- Output tokens = 380k\n\nSonnet 5 (High):\n\n- Total Cost = $4.85\n- Duration = 21m 50s\n- Output tokens = 123k",
    "media": [
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        "w": 1080,
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    ],
    "quoted": null,
    "metrics": {
      "likes": 76,
      "replies": 5
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  },
  {
    "id": "FR-0001",
    "type": "post",
    "added": "2026-09-30",
    "title": "Sonnet 5 vs Sonnet 5.5: the history of the dinosaurs, animated",
    "category": "design",
    "models": [
      "claude-sonnet-5",
      "claude-sonnet-5-5"
    ],
    "note": "Official Anthropic post. Same prompt to both models, animated in JavaScript; prompt by @kevin_t_ngo.",
    "source": {
      "platform": "x",
      "id": "2104674993212702803",
      "url": "https://x.com/claudeai/status/2104674993212702803",
      "author_name": "Claude",
      "handle": "claudeai",
      "avatar": "https://pbs.twimg.com/profile_images/1950950107937185792/QOfEjFoJ_bigger.jpg",
      "verified": true
    },
    "posted": "2026-09-28T20:49:56.000Z",
    "text": "The history of the dinosaurs in under a minute by @kevin_t_ngo, animated in JavaScript from the same prompt, Sonnet 5 vs Sonnet 5.5.",
    "media": [
      {
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        "url": "https://pbs.twimg.com/amplify_video_thumb/2104672663054528513/img/TD7mNCoBCisJfNtH.jpg",
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    "quoted": null,
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      "likes": 684,
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]