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   "whose": "Anthropic",
   "source": "The four cost-per-task charts on the launch page, read off the SVGs (approximate)",
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   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vbr-o55-rep2-out",
   "what": "output tokens, one run, Opus 5.5, photo, run 2, medium",
   "value": 21606,
   "shown": "21,606",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
   "read": "2026-09-28T21:15",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vbr-o55-rep3-out",
   "what": "output tokens, one run, Opus 5.5, photo, run 3, medium",
   "value": 20516,
   "shown": "20,516",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
   "read": "2026-09-28T21:15",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-price-in",
   "what": "Sonnet 5.5 price per million input tokens",
   "value": 2,
   "shown": "$2",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-price-out",
   "what": "Sonnet 5.5 price per million output tokens",
   "value": 10,
   "shown": "$10",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-price-cache",
   "what": "cache reads per million tokens, Sonnet 5.5 and Opus 5.5 alike",
   "value": 0.2,
   "shown": "$0.20",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-opus-price-in",
   "what": "Opus 5.5 price per million input tokens",
   "value": 4,
   "shown": "$4",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-opus-price-out",
   "what": "Opus 5.5 price per million output tokens",
   "value": 20,
   "shown": "$20",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-faster",
   "what": "how much faster Sonnet 5.5 writes output than Sonnet 5, per Anthropic",
   "value": "30%+",
   "shown": "30%+",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-cost-less",
   "what": "Anthropic's \"up to\" saving per task against Sonnet 5",
   "value": 0.3,
   "shown": "30%",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-tb-s55",
   "what": "Terminal-Bench 4.0, Sonnet 5.5 at max (Anthropic's table)",
   "value": 70.6,
   "shown": "70.6%",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-tb-s5",
   "what": "Terminal-Bench 4.0, Sonnet 5 (Anthropic's table)",
   "value": 10.3,
   "shown": "10.3%",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-tb-o55",
   "what": "Terminal-Bench 4.0, Opus 5.5 at xhigh, its highest score (Anthropic's table)",
   "value": 66.4,
   "shown": "66.4%",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-gdp-s55",
   "what": "GDPval-AA v2.1 Elo, Sonnet 5.5 at max",
   "value": 1844,
   "shown": "1844",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "l-gdp-o55",
   "what": "GDPval-AA v2.1 Elo, Opus 5.5",
   "value": 1846,
   "shown": "1846",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "sc-gdp-xhigh",
   "what": "GDPval-AA Elo, Sonnet 5.5 at xhigh (system card §8.14.3)",
   "value": 1725,
   "shown": "1725",
   "whose": "Anthropic",
   "source": "Claude Sonnet 5.5 System Card",
   "url": "https://www-cdn.anthropic.com/870c8f525702625d2c62fc6dd04c857e3250bec1/Claude%20Sonnet%205.5%20System%20Card.pdf",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "sc-gdp-fewer",
   "what": "fewer output tokens at xhigh than at max on GDPval-AA (system card §8.14.3)",
   "value": 0.67,
   "shown": "67%",
   "whose": "Anthropic",
   "source": "Claude Sonnet 5.5 System Card",
   "url": "https://www-cdn.anthropic.com/870c8f525702625d2c62fc6dd04c857e3250bec1/Claude%20Sonnet%205.5%20System%20Card.pdf",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "sc-se-s55",
   "what": "standard error of the Terminal-Bench 4.0 score, Sonnet 5.5 (system card §8.5)",
   "value": 2.5,
   "shown": "±2.5",
   "whose": "Anthropic",
   "source": "Claude Sonnet 5.5 System Card",
   "url": "https://www-cdn.anthropic.com/870c8f525702625d2c62fc6dd04c857e3250bec1/Claude%20Sonnet%205.5%20System%20Card.pdf",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "sc-se-o55",
   "what": "standard error of the Terminal-Bench 4.0 score, Opus 5.5 (system card §8.5)",
   "value": 2.6,
   "shown": "±2.6",
   "whose": "Anthropic",
   "source": "Claude Sonnet 5.5 System Card",
   "url": "https://www-cdn.anthropic.com/870c8f525702625d2c62fc6dd04c857e3250bec1/Claude%20Sonnet%205.5%20System%20Card.pdf",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "sc-fallback-s55",
   "what": "Terminal-Bench 4.0 trials where a request went to a fallback model, Sonnet 5.5 (system card §8.5)",
   "value": 0.015,
   "shown": "1.5%",
   "whose": "Anthropic",
   "source": "Claude Sonnet 5.5 System Card",
   "url": "https://www-cdn.anthropic.com/870c8f525702625d2c62fc6dd04c857e3250bec1/Claude%20Sonnet%205.5%20System%20Card.pdf",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "sc-fallback-o55",
   "what": "Terminal-Bench 4.0 trials where a flagged request was answered by an older model, Opus 5.5 (system card §8.5)",
   "value": 0.1,
   "shown": "10%",
   "whose": "Anthropic",
   "source": "Claude Sonnet 5.5 System Card",
   "url": "https://www-cdn.anthropic.com/870c8f525702625d2c62fc6dd04c857e3250bec1/Claude%20Sonnet%205.5%20System%20Card.pdf",
   "read": "2026-09-28T21:17",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "aa-193k",
   "what": "output tokens per index task at max, \"the highest token use we have measured\"",
   "value": "~193k",
   "shown": "~193k",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, launch article on Sonnet 5.5",
   "url": "https://artificialanalysis.ai/articles/claude-sonnet-5-5",
   "read": "2026-09-28T21:19",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "aa-rank",
   "what": "rank on the Intelligence Index, at max",
   "value": 2,
   "shown": "#2",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, launch article on Sonnet 5.5",
   "url": "https://artificialanalysis.ai/articles/claude-sonnet-5-5",
   "read": "2026-09-28T21:19",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vals-rank",
   "what": "rank on the Vals Index",
   "value": 2,
   "shown": "#2",
   "whose": "Vals AI",
   "source": "Vals AI, Claude Sonnet 5.5",
   "url": "https://www.vals.ai/models/anthropic_claude-sonnet-5-5",
   "read": "2026-09-28T21:24",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vals-of",
   "what": "models ranked on the Vals Index",
   "value": 66,
   "shown": "66",
   "whose": "Vals AI",
   "source": "Vals AI, Claude Sonnet 5.5",
   "url": "https://www.vals.ai/models/anthropic_claude-sonnet-5-5",
   "read": "2026-09-28T21:24",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vals-s55",
   "what": "Vals Index, Sonnet 5.5",
   "value": 69.22,
   "shown": "69.22%",
   "whose": "Vals AI",
   "source": "Vals AI, Claude Sonnet 5.5",
   "url": "https://www.vals.ai/models/anthropic_claude-sonnet-5-5",
   "read": "2026-09-28T21:24",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vals-o55",
   "what": "Vals Index, Opus 5.5",
   "value": 69.69,
   "shown": "69.69%",
   "whose": "Vals AI",
   "source": "Vals AI, Claude Sonnet 5.5",
   "url": "https://www.vals.ai/models/anthropic_claude-sonnet-5-5",
   "read": "2026-09-28T21:24",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-low",
   "what": "time for the pelican at low",
   "value": "10s",
   "shown": "10s",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-medium",
   "what": "time for the pelican at medium",
   "value": "11s",
   "shown": "11s",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-high",
   "what": "time for the pelican at high",
   "value": "17s",
   "shown": "17s",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-xhigh",
   "what": "time for the pelican at xhigh",
   "value": "41s",
   "shown": "41s",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-max",
   "what": "time at max, until the response failed",
   "value": "15m 40s",
   "shown": "15m 40s",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-low-out",
   "what": "output tokens for the pelican at low",
   "value": 1623,
   "shown": "1,623",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-medium-out",
   "what": "output tokens for the pelican at medium",
   "value": 1796,
   "shown": "1,796",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-high-out",
   "what": "output tokens for the pelican at high",
   "value": 2334,
   "shown": "2,334",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-xhigh-out",
   "what": "output tokens for the pelican at xhigh",
   "value": 5730,
   "shown": "5,730",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "simon-max-out",
   "what": "output tokens at max, the limit for one response",
   "value": 128000,
   "shown": "128,000",
   "whose": "Simon Willison",
   "source": "Simon Willison's five settings on the pelican prompt, on Hacker News",
   "url": "https://news.ycombinator.com/item?id=49882573",
   "read": "2026-09-28T21:27",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vb-wave-s5",
   "what": "output tokens, Sonnet 5 painting the Great Wave, 1 run, Claude Code default (high)",
   "value": 66874,
   "shown": "66,874",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
   "read": "2026-09-28T21:15",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vb-wave-s55",
   "what": "output tokens, Sonnet 5.5 painting the Great Wave, 1 run, Claude Code default (medium)",
   "value": 10660,
   "shown": "10,660",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
   "read": "2026-09-28T21:15",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vb-wave-o55",
   "what": "output tokens, Opus 5.5 painting the Great Wave, 1 run, Claude Code default (medium)",
   "value": 28600,
   "shown": "28,600",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
   "read": "2026-09-28T21:15",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vb-n",
   "what": "token runs per Claude model (3 on one photo, the Great Wave, a chart)",
   "value": 5,
   "shown": "5",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
   "read": "2026-09-28T21:15",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vb-med-s55",
   "what": "median output tokens over 5 runs, Sonnet 5.5",
   "value": 9481,
   "shown": "9,481",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
   "read": "2026-09-28T21:15",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vb-med-s5",
   "what": "median output tokens over 5 runs, Sonnet 5",
   "value": 57847,
   "shown": "57,847",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
   "read": "2026-09-28T21:15",
   "moves": false,
   "caveat": null,
   "now": null,
   "now_shown": null,
   "now_read": null
  },
  {
   "id": "vb-med-o55",
   "what": "median output tokens over 5 runs, Opus 5.5",
   "value": 21606,
   "shown": "21,606",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
   "url": null,
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   "moves": false,
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  {
   "id": "vb-ratio-s5",
   "what": "Sonnet 5's median over Sonnet 5.5's",
   "value": 6.10136061596878,
   "shown": "6.1×",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
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   "moves": false,
   "caveat": null,
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  },
  {
   "id": "vb-ratio-o55",
   "what": "Opus 5.5's median over Sonnet 5.5's",
   "value": 2.2788735365467776,
   "shown": "2.3×",
   "whose": "Model Fatigue (our runs)",
   "source": "Our Great Wave runs and token runs (Claude Code 2.1.284 and Codex, each tool's defaults)",
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   "read": "2026-09-28T21:15",
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  },
  {
   "id": "print-date",
   "what": "when the print was first published",
   "value": "c. 1830–32",
   "shown": "c. 1830–32",
   "whose": "The Metropolitan Museum of Art",
   "source": "Katsushika Hokusai, Under the Wave off Kanagawa, The Metropolitan Museum of Art (JP1847), via Wikimedia Commons",
   "url": "https://www.metmuseum.org/art/collection/search/45434",
   "read": "2026-09-29",
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   "caveat": null,
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  {
   "id": "vals-margin",
   "what": "Vals's error bar on Sonnet 5.5's Vals Index score",
   "value": 0.96,
   "shown": "±0.96",
   "whose": "Vals AI",
   "source": "Vals AI, Claude Sonnet 5.5",
   "url": "https://www.vals.ai/models/anthropic_claude-sonnet-5-5",
   "read": "2026-09-28T21:24",
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  {
   "id": "l-fc-s55-max",
   "what": "FrontierCode 1.1, Sonnet 5.5 at max (Anthropic's table)",
   "value": 46.2,
   "shown": "46.2%",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
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  {
   "id": "l-fc-s55-xhigh",
   "what": "FrontierCode 1.1, Sonnet 5.5 at xhigh (Anthropic's table)",
   "value": 52.1,
   "shown": "52.1%",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
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   "moves": false,
   "caveat": null,
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  {
   "id": "l-tb-gap",
   "what": "Sonnet 5.5 at max minus Opus 5.5 at xhigh, Terminal-Bench 4.0",
   "value": 4.199999999999989,
   "shown": "4.2 points",
   "whose": "Anthropic",
   "source": "Introducing Claude Sonnet 5.5 (launch page)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
   "moves": false,
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  {
   "id": "aa-d-low-cost",
   "what": "cost per task, Sonnet 5.5 against Sonnet 5, both at low",
   "value": -0.18547712396359195,
   "shown": "−19%",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
   "read": "2026-09-28T21:29",
   "moves": true,
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  {
   "id": "aa-d-medium-cost",
   "what": "cost per task, Sonnet 5.5 against Sonnet 5, both at medium",
   "value": -0.4132933266462535,
   "shown": "−41%",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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   "moves": true,
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  {
   "id": "aa-d-high-cost",
   "what": "cost per task, Sonnet 5.5 against Sonnet 5, both at high",
   "value": -0.39761382900718123,
   "shown": "−40%",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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   "moves": true,
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  {
   "id": "aa-d-xhigh-cost",
   "what": "cost per task, Sonnet 5.5 against Sonnet 5, both at xhigh",
   "value": -0.04507841265524759,
   "shown": "−5%",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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   "moves": true,
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  {
   "id": "aa-d-max-cost",
   "what": "cost per task, Sonnet 5.5 against Sonnet 5, both at max",
   "value": 0.49329979410690705,
   "shown": "+49%",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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   "moves": true,
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  {
   "id": "aa-d-max-out",
   "what": "output tokens per task, Sonnet 5.5 against Sonnet 5, both at max",
   "value": 0.6371724907502048,
   "shown": "+64%",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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   "moves": true,
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   "now_read": null
  },
  {
   "id": "aa-r-cost-om-sx",
   "what": "cost per task, Opus 5.5 at medium as a share of Sonnet 5.5 at xhigh",
   "value": 0.4871365642202113,
   "shown": "0.49×",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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   "moves": true,
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  {
   "id": "aa-r-cost-ox-sm",
   "what": "cost per task, Opus 5.5 at xhigh as a share of Sonnet 5.5 at max",
   "value": 0.45498841432003595,
   "shown": "0.45×",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
   "read": "2026-09-28T21:29",
   "moves": true,
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   "now_read": null
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  {
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   "value": 2.8636069710564787,
   "shown": "2.9×",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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  {
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   "value": 2.9365891745828225,
   "shown": "2.9×",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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  {
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   "shown": "3.6×",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page, cost breakdown (re-read for this page)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
   "read": "2026-09-29T12:28",
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  {
   "id": "aa-r-cache-sm-ox",
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   "value": 3.2212542210228294,
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   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page, cost breakdown (re-read for this page)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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  {
   "id": "ac-fc-ratio",
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   "whose": "Anthropic",
   "source": "The four cost-per-task charts on the launch page, read off the SVGs (approximate)",
   "url": "https://www.anthropic.com/claude-sonnet-5-5",
   "read": "2026-09-28T21:17",
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  {
   "id": "aa-gap-a",
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   "value": 1.4065672599265462,
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   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page, cost breakdown (re-read for this page)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
   "read": "2026-09-29T12:28",
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  {
   "id": "aa-gapcache-a",
   "what": "of that gap, cache reads",
   "value": 1.0668585166578644,
   "shown": "$1.07",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page, cost breakdown (re-read for this page)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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  {
   "id": "aa-gapout-a",
   "what": "of that gap, output tokens",
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   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page, cost breakdown (re-read for this page)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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  {
   "id": "aa-gap-b",
   "what": "cost per index task, Sonnet 5.5 at max minus Opus 5.5 at xhigh",
   "value": 4.14352335714757,
   "shown": "$4.14",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page, cost breakdown (re-read for this page)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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  {
   "id": "aa-gapcache-b",
   "what": "of that gap, cache reads",
   "value": 3.0416816487270246,
   "shown": "$3.04",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page, cost breakdown (re-read for this page)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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  {
   "id": "aa-gapout-b",
   "what": "of that gap, output tokens",
   "value": 0.615033713418671,
   "shown": "$0.62",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page, cost breakdown (re-read for this page)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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  {
   "id": "aa-d-sol-md-s55-lo",
   "what": "cost per task, GPT-6 Sol at medium against Sonnet 5.5 at low",
   "value": -0.40104548459238487,
   "shown": "−40%",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
   "read": "2026-09-28T21:29",
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  {
   "id": "aa-d-sol-hi-s55-md",
   "what": "cost per task, GPT-6 Sol at high against Sonnet 5.5 at medium",
   "value": -0.3608938226468592,
   "shown": "−36%",
   "whose": "Artificial Analysis",
   "source": "Artificial Analysis, Claude Sonnet 5.5 model page (every effort setting)",
   "url": "https://artificialanalysis.ai/models/claude-sonnet-5-5",
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 ]
}