{
 "entity": "gpt-5-5",
 "entity_type": "model",
 "category": "Summarising",
 "suite": "suite-2026-08-tasks/summarising",
 "model": "openai/gpt-5.5",
 "judges": [
  "anthropic/claude-sonnet-5",
  "google/gemini-3.1-pro-preview",
  "x-ai/grok-4.5"
 ],
 "judge_protocol": "judge-2026-08",
 "anchors": "solo-2026-08-a",
 "score": 98,
 "caps": 0,
 "cost_usd": 0.1586,
 "started_at": "2026-08-13T09:41:49.954Z",
 "finished_at": "2026-08-13T09:42:16.082Z",
 "tasks": [
  {
   "id": "su1",
   "name": "Meeting notes to actions",
   "prompt": "From these notes, list ONLY the action items, each with its owner, as a bulleted list. If an owner is not stated, write 'unassigned'. Notes: 'Priya said the March invoices still aren't reconciled. Tom will chase the supplier by Friday. We discussed the new CRM — nobody has looked at pricing yet. Sam is on leave next week. The board pack needs the updated cashflow before the 20th; Priya said she'd do it if she has the numbers.'",
   "output": "- Chase the supplier by Friday — Tom\n- Review pricing for the new CRM — unassigned\n- Update the cashflow for the board pack before the 20th — Priya",
   "latency_ms": 9953,
   "cost": 0.005335,
   "task_score": 9,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 7,
     "violates": false,
     "reasoning": "Good format and mostly accurate, but omits reconciling March invoices as an action item, a minor completeness issue."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 9,
     "violates": false,
     "reasoning": "The response accurately extracts the action items, assigns the correct owners (including 'unassigned'), and follows all formatting constraints perfectly. It misses the implied action to reconcile March invoices, but captures all explicit ac"
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurately extracts only clear action items with owners; omits non-actions. Minor phrasing polish possible but essentially flawless."
    }
   ]
  },
  {
   "id": "su2",
   "name": "Five-bullet summary",
   "prompt": "Summarise in exactly 5 bullets, max 15 words each, readable in 20 seconds: 'Our Q3 revenue rose 12% to £1.4m, driven mainly by the new retail channel which contributed £310k. Margins slipped from 41% to 37% because of higher shipping costs and a one-off warehouse move. Headcount stayed flat at 34. The main risk into Q4 is the supplier contract, which expires in November and has not been renegotiated. Cash at bank is £620k.'",
   "output": "- Q3 revenue rose 12% to £1.4m.\n- New retail channel contributed £310k.\n- Margins fell to 37% due to shipping and warehouse move.\n- Headcount remained flat at 34.\n- Q4 risk: supplier contract expires November; cash is £620k.",
   "latency_ms": 2660,
   "cost": 0.0035,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, concise, meets 5-bullet/15-word constraints, though last bullet merges two facts slightly awkwardly."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing exactly 5 bullets with fewer than 15 words each. It accurately captures all key financial and operational details in a highly readable format."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Exact 5 bullets under 15 words each; fully accurate, complete, clear summary meeting all constraints."
    }
   ]
  },
  {
   "id": "su3",
   "name": "Do not invent",
   "prompt": "Summarise this in under 50 words. If a fact is not present, do not supply it: 'The council approved the scheme on Tuesday. Three members voted against. Construction is expected to begin next year.' Then state on a separate line: 'Not stated: ' followed by one thing a reader would want to know that the text does not say.",
   "output": "The council approved the scheme on Tuesday, with three members voting against. Construction is expected to begin next year.\n\nNot stated: what the scheme is.",
   "latency_ms": 2581,
   "cost": 0.002465,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise summary under 50 words, correct format, valid 'Not stated' item not in text. Minor: could note total votes, but not required."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing an accurate summary under 50 words and correctly identifying a relevant missing fact on a separate line exactly as requested."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Perfect summary under 50 words, no added facts, correct format and useful missing info noted."
    }
   ]
  },
  {
   "id": "su4",
   "name": "One-sentence gist",
   "prompt": "Reduce to ONE sentence of no more than 25 words: 'After eighteen months of testing across four hospitals, the trial found that the new triage system reduced average waiting times by 22 minutes, although staff reported it added roughly ten minutes of administrative work per shift and two sites abandoned it before the trial ended.'",
   "output": "An 18-month, four-hospital trial found the new triage system cut waits by 22 minutes, but added staff admin and lost two sites.",
   "latency_ms": 2280,
   "cost": 0.004815,
   "task_score": 9,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 6,
     "violates": false,
     "reasoning": "Accurate single sentence, within word limit, but drops specific 'ten minutes' detail and slightly loses clarity/precision compared to original."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly condenses the original text into a single, clear sentence of 22 words, capturing all key information while strictly adhering to the constraints."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate one-sentence summary under 25 words capturing all key facts with only minor vagueness on admin time."
    }
   ]
  },
  {
   "id": "su5",
   "name": "Preserve the caveat",
   "prompt": "Summarise in under 60 words, and make sure the limitation survives: 'Early results suggest the drug reduces symptoms in about 60% of patients. However the sample was only 34 people, all under 40, and there was no control group, so the finding should be treated as preliminary.'",
   "output": "Early findings suggest the drug reduces symptoms in around 60% of patients, but the evidence is preliminary because the study involved only 34 people, all under 40, and lacked a control group.",
   "latency_ms": 8275,
   "cost": 0.00226,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise, under 60 words, preserves limitation and key facts. Minor room for improvement but essentially flawless."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly summarizes the text in under 60 words while retaining all the specified limitations. It is clear, concise, and highly useful."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate summary under 60 words; all limitations preserved clearly and concisely for non-experts."
    }
   ]
  },
  {
   "id": "su6",
   "name": "Summarise a disagreement",
   "prompt": "In under 80 words, summarise the disagreement fairly, giving each side equal weight: 'Marketing wants to cut the price to win share, arguing volume will more than compensate. Finance says the last price cut in 2024 produced a 4% volume lift against an 11% margin loss, and would rather spend the same money on retention.'",
   "output": "Marketing argues for a price cut to gain market share, believing higher sales volume will more than offset the lower price. Finance opposes this, citing the 2024 price cut, which delivered only a 4% volume increase while reducing margin by 11%. Finance believes the same investment would be better used on customer retention.",
   "latency_ms": 2322,
   "cost": 0.003175,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, balanced, concise summary within word limit (~52 words), fairly representing both sides with correct figures."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly summarizes the disagreement, accurately captures both perspectives with equal weight, and strictly adheres to the word count constraint."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate fair summary under 80 words with equal weight; fully follows all instructions."
    }
   ]
  },
  {
   "id": "su7",
   "name": "Extract the decision",
   "prompt": "From this thread, state in one line WHAT was decided and WHO decided it. If no decision was reached, say so. Thread: 'A: shall we move the launch to October? B: I'd rather not, the trade show is in September. A: agreed, but we can't ship without the packaging. C: packaging lands 2 Sept, confirmed by the printer this morning. A: fine, September stands then.'",
   "output": "The launch will stay in September, decided by A after C confirmed packaging would land on 2 Sept.",
   "latency_ms": 3048,
   "cost": 0.00301,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, concise, one-line, correctly identifies decision and decider; minor omission of B's input but overall solid."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly captures what was decided and who decided it in a single, clear line, following all instructions exactly."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurately states decision and decider in one clear line; fully follows task; concise and useful."
    }
   ]
  },
  {
   "id": "su8",
   "name": "Long to short, no loss",
   "prompt": "Compress to under 40 words without losing any of the four numbers: 'The programme ran for 3 years, cost £2.1m, reached 14,000 participants, and reported a 19% improvement in the primary outcome measure compared with the comparison group.'",
   "output": "The 3-year programme cost £2.1m, reached 14,000 participants, and reported a 19% improvement in the primary outcome measure versus the comparison group.",
   "latency_ms": 1796,
   "cost": 0.002105,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 10,
     "violates": false,
     "reasoning": "All four numbers retained, concise at 22 words, accurate, clear rewrite meeting the constraint."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly compresses the text to 22 words (well under the 40-word limit) while retaining all four required numbers and the original meaning."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "All four numbers retained; 22 words <40; meaning fully preserved; clear, concise, useful."
    }
   ]
  },
  {
   "id": "su9",
   "name": "Summary for a specific reader",
   "prompt": "Summarise this for a finance director who cares only about cost and risk, in under 70 words: 'The migration will move 40 services to the new platform over 9 months. The team estimates 3 months of dual-running, during which both platforms are paid for. There is a penalty clause if we exit the old contract before June. Engineers expect a 30% reduction in incidents afterwards.'",
   "output": "Migration covers 40 services over 9 months. Key cost risks: 3 months of dual-running means paying for both platforms, and early exit before June triggers a penalty. Financial upside: engineers expect a 30% reduction in incidents post-migration, likely lowering operational risk and support costs.",
   "latency_ms": 2972,
   "cost": 0.00305,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise, focuses on cost/risk, under 70 words, meets task well."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly tailors the summary to a finance director by explicitly highlighting cost implications and risks. It captures all key financial points from the source text and easily meets the under-70-words constraint (44 words)."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate, under-70-word summary tightly focused on cost and risk for a finance director; clear and complete."
    }
   ]
  },
  {
   "id": "su10",
   "name": "Bullet the risks only",
   "prompt": "List ONLY the risks as bullets, maximum 5, no solutions, no preamble: 'The supplier is reliable but single-source. Demand is growing 20% a year. Our warehouse lease ends in 14 months. The finance system is unsupported after next April. Staff turnover is low. Payment terms with our largest customer are 90 days.'",
   "output": "- Single-source supplier dependency\n- Demand growth may outpace capacity\n- Warehouse lease expires in 14 months\n- Finance system unsupported after next April\n- 90-day payment terms may strain cash flow",
   "latency_ms": 4072,
   "cost": 0.00374,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise risk list, max 5 bullets, no solutions or preamble, correctly excludes non-risk items like low turnover and reliable supplier aspect."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response flawlessly extracts the 5 risks as bullets, ignores the non-risk, provides no solutions, and includes no preamble, strictly following all instructions."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Perfect extraction of exactly 5 risks as bullets; omits non-risk; no preamble or solutions; fully compliant and clear."
    }
   ]
  },
  {
   "id": "su11",
   "name": "Headline and standfirst",
   "prompt": "Write a headline (max 9 words) and a one-sentence standfirst (max 30 words) for: 'A study of 1,200 UK small businesses found that those which adopted at least one AI tool in 2025 grew revenue 8% faster on average, though the researchers could not establish whether the tools caused the growth or successful firms simply adopt tools sooner.'",
   "output": "**AI-using small businesses grow faster, study finds**\n\nResearch on 1,200 UK small firms links 2025 AI adoption to 8% faster revenue growth, but cannot prove the tools caused the gains.",
   "latency_ms": 3841,
   "cost": 0.00669,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Headline is 7 words, accurate; standfirst is 25 words, accurate and captures causality caveat. Both within limits, clear and concise."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, including word counts and sentence limits. It accurately and concisely summarizes the provided text in a format highly useful for a busy professional."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Headline 7 words, standfirst 23 words; accurately captures study findings, sample, growth rate and causality caveat; clear and useful."
    }
   ]
  },
  {
   "id": "su12",
   "name": "Say when there is nothing to summarise",
   "prompt": "Summarise the key findings of this text in under 40 words: 'Thanks — noted. Will pick this up Monday.' If there are no findings to summarise, say so plainly instead of padding.",
   "output": "No findings to summarise.",
   "latency_ms": 1420,
   "cost": 0.00117,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Correctly identifies no findings exist, plain and concise as instructed, meets constraint clearly."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, accurately identifying that there are no findings to summarize and stating so plainly within the word count limit."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Correctly identifies no findings; follows under-40-word rule and plain-statement instruction exactly; clear and useful."
    }
   ]
  }
 ]
}