{
 "entity": "gpt-5-3-codex",
 "entity_type": "model",
 "category": "Summarising",
 "suite": "suite-2026-08-tasks/summarising",
 "model": "openai/gpt-5.3-codex",
 "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": 96,
 "caps": 0,
 "cost_usd": 0.1583,
 "started_at": "2026-08-13T09:41:23.705Z",
 "finished_at": "2026-08-13T09:41:49.949Z",
 "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": "- **Tom** — Chase the supplier by Friday.  \n- **unassigned** — Reconcile the March invoices.  \n- **unassigned** — Review pricing for the new CRM.  \n- **Priya** — Update the cashflow for the board pack before the 20th (if she has the numbers).",
   "latency_ms": 3026,
   "cost": 0.00350525,
   "task_score": 9,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, well-formatted bullet list with owners noted; unassigned used correctly. Minor: Sam's leave omitted (not an action item, fine) and Priya's conditional slightly softened but acceptable."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly extracts all action items, correctly identifies the owners (or marks them as 'unassigned'), and formats them as a bulleted list exactly as requested."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurately extracts all action items with correct owners; clear bullets. Minor rephrase of CRM item and order difference are negligible."
    }
   ]
  },
  {
   "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 increased 12% to £1.4m.\n- New retail channel drove growth, contributing £310k.\n- Margins fell from 41% to 37% due shipping costs and warehouse move.\n- Headcount remained unchanged at 34 employees.\n- Q4 risk: November supplier contract unrenegotiated; cash at bank is £620k.",
   "latency_ms": 3767,
   "cost": 0.0052605,
   "task_score": 8,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 7,
     "violates": false,
     "reasoning": "Accurate, concise, mostly meets word limit, but merges two facts in last bullet and slight grammar issue ('due shipping')."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 8,
     "violates": false,
     "reasoning": "Follows all constraints perfectly, including exactly 5 bullets under 15 words each. Captures all key facts accurately. Minor grammatical omission ('due shipping' instead of 'due to shipping') prevents a perfect score."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Exact 5 bullets, each ≤15 words, fully accurate summary, clear and concise for quick read."
    }
   ]
  },
  {
   "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 for.",
   "latency_ms": 1722,
   "cost": 0.00142625,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise summary under 50 words, correctly follows format with 'Not stated' line, no invented facts. Very minor: could be slightly more concise but meets requirements well."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing a concise summary under 50 words and correctly identifying a missing piece of information on a separate line exactly as formatted."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Flawless under-50-word summary using only given facts; correct separate 'Not stated' line with a relevant omission."
    }
   ]
  },
  {
   "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": "Across four hospitals over eighteen months, the triage system cut waits by 22 minutes but added ten administrative minutes per shift; two sites quit early.",
   "latency_ms": 2794,
   "cost": 0.00325675,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, single sentence, exactly 25 words, captures all key facts concisely."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly summarizes the original text in exactly 25 words and a single sentence, capturing all key details clearly and concisely."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Exact 25-word single sentence capturing all key facts accurately, clearly, and usefully with no errors."
    }
   ]
  },
  {
   "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": "Preliminary findings indicate the drug reduced symptoms in roughly 60% of patients. But the evidence is limited: the study included only 34 participants, all under age 40, and lacked a control group, so conclusions remain tentative.",
   "latency_ms": 2629,
   "cost": 0.001365,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, preserves limitation, under 60 words, clear and concise."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly summarizes the text in 37 words, well under the 60-word limit, and clearly retains all the crucial limitations regarding sample size, age, and lack of a control group."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate summary under 60 words; all key limitations preserved clearly and concisely."
    }
   ]
  },
  {
   "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 advocates lowering prices to gain market share, believing higher sales volume will offset thinner margins and strengthen competitive position. Finance counters with 2024 evidence: a prior price cut increased volume by only 4% while reducing margin by 11%, and argues the same budget would deliver better returns if invested in customer retention instead.",
   "latency_ms": 1789,
   "cost": 0.00138075,
   "task_score": 9,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, balanced, concise, under 80 words, captures both sides fairly and clearly."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 9,
     "violates": false,
     "reasoning": "The response accurately and concisely summarizes both sides of the disagreement within the word limit. It is clear, useful, and gives fair representation to both Marketing and Finance's arguments."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate fair summary under 80 words with equal weight; fully meets all criteria flawlessly."
    }
   ]
  },
  {
   "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": "Decision: **Keep the launch in September (not move to October)**, decided by **A** (after input from B and C).",
   "latency_ms": 1791,
   "cost": 0.001491,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, concise one-line decision with attribution; minor formatting with bold/parenthetical slightly extends but stays clear and correct."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, accurately identifying the decision and the decision-maker in a single, clear line."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate one-line summary of decision and decider; fully follows instructions; clear 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": "Over 3 years, the £2.1m programme reached 14,000 participants and reported a 19% improvement in the primary outcome versus the comparison group.",
   "latency_ms": 2717,
   "cost": 0.00310275,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, retains all four numbers, well under 40 words, clear and concise."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response successfully compresses the text to 22 words (well under the 40-word limit) while retaining all four required numbers and the core meaning. It is clear, concise, and accurate."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "All four numbers retained; 22 words; meaning fully preserved; clear and concise compression."
    }
   ]
  },
  {
   "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 shifts 40 services over 9 months. Expect 3 months of dual-running costs, paying for both old and new platforms simultaneously. Exiting the old contract before June triggers a penalty, so timing is critical to avoid extra cost. Post-migration, engineers forecast a 30% incident reduction, lowering operational risk and likely reducing outage-related cost exposure.",
   "latency_ms": 1872,
   "cost": 0.00168,
   "task_score": 9,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, concise, focused on cost/risk, under 70 words (~55). Minor style could be tighter but solid for the audience."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "Perfectly tailored to the finance director, highlighting dual-running costs, penalty risks, and operational risk reduction. Meets the word count constraint and is highly concise."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate cost/risk focus, under 70 words, clear and useful; minor polish only."
    }
   ]
  },
  {
   "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 risk (supply disruption exposure).\n- Demand growth of 20% per year may outpace capacity, creating fulfillment/service-level risk.\n- Warehouse lease expiry in 14 months creates premises continuity/relocation risk.\n- Finance system support ending after next April creates operational, security, and compliance risk.\n- 90-day payment terms with the largest customer create cash-flow and customer concentration risk.",
   "latency_ms": 3600,
   "cost": 0.003367,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise risk-only bullets, five max, no solutions or preamble, covers all key risks appropriately."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing exactly 5 bulleted risks with no preamble or solutions, accurately derived from the provided text."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Perfectly lists exactly 5 risks as bullets with no preamble or solutions; accurately identifies all risks and omits non-risk."
    }
   ]
  },
  {
   "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": "**Headline:** AI-adopting UK SMEs reported 8% faster revenue growth\n\n**Standfirst:** In a 1,200-firm study, businesses using at least one AI tool in 2025 outpaced peers, but researchers said the link may reflect stronger companies adopting sooner, not AI-driven gains.",
   "latency_ms": 4142,
   "cost": 0.004095,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise, meets word limits, captures nuance about causation uncertainty; minor stylistic room only."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions. The headline is 8 words, and the standfirst is a single sentence of 29 words. The content accurately and concisely captures the provided text."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Perfectly meets word limits, accurately summarizes study findings and caveat, clear and professional."
    }
   ]
  },
  {
   "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": "There are no substantive findings to summarise. It’s just an acknowledgment and a note to revisit the matter on Monday.",
   "latency_ms": 1529,
   "cost": 0.001134,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Correctly identifies no findings, concise, meets word limit, follows instruction accurately."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response accurately identifies that there are no findings, states this plainly, and stays well under the 40-word limit."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurately states no findings exist; follows word limit and plain-speech rule exactly; clear and useful."
    }
   ]
  }
 ]
}