{
 "entity": "claude-sonnet-5",
 "entity_type": "model",
 "category": "Summarising",
 "suite": "suite-2026-08-tasks/summarising",
 "model": "anthropic/claude-sonnet-5",
 "judges": [
  "google/gemini-3.1-pro-preview",
  "openai/gpt-5.6-terra",
  "x-ai/grok-4.5"
 ],
 "judge_protocol": "judge-2026-08",
 "anchors": "solo-2026-08-a",
 "score": 93,
 "caps": 4,
 "cost_usd": 0.1383,
 "started_at": "2026-08-13T09:37:39.140Z",
 "finished_at": "2026-08-13T09:38:12.850Z",
 "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- Look at CRM pricing — unassigned\n- Update the cashflow for the board pack before the 20th — Priya\n- Reconcile the March invoices — unassigned",
   "latency_ms": 3956,
   "cost": 0.002082,
   "task_score": 9,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, accurately extracting all action items from the notes, assigning the correct owners (or 'unassigned'), and formatting them as a bulleted list with no extraneous text."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "All actionable items are identified with owners, and the required bulleted format is followed. Minor issue: Priya’s cashflow task is conditional on having the numbers, but the response states it unconditionally."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurately extracts all action items with correct owners in required bulleted format; minor phrasing variance only."
    }
   ]
  },
  {
   "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 up 12% to £1.4m, boosted by new retail channel (£310k)\n- Margins fell from 41% to 37% due to shipping costs, warehouse move\n- Headcount remained flat at 34 employees this quarter\n- Key Q4 risk: supplier contract expires November, not yet renegotiated\n- Cash at bank stands at £620k currently",
   "latency_ms": 3889,
   "cost": 0.001904,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, including the exact bullet count and word limit per bullet. It accurately and concisely captures all key information, making it highly useful for a busy professional."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise five-bullet summary; all bullets are under 15 words. It captures every key metric and risk. Minor omissions: retail channel was described as the main driver, and the warehouse move as one-off."
    },
    {
     "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 it. Construction is expected to begin next year.\n\nNot stated: The specific location or nature of the scheme being approved.",
   "latency_ms": 3351,
   "cost": 0.001164,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, including the word count constraint and the specific formatting for the 'Not stated' line, without adding any outside facts."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 5,
     "violates": true,
     "reasoning": "Accurate, concise summary under 50 words and correctly identifies omitted information. However, the “Not stated” line gives two possible things—location or nature—rather than one thing."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Flawless under-50-word summary with no added facts; exact required format and a sensible missing detail."
    }
   ]
  },
  {
   "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": "The 18-month, four-hospital trial found the new triage system cut waits by 22 minutes but added 10 minutes of staff paperwork; two sites quit early.",
   "latency_ms": 3168,
   "cost": 0.00077,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly condenses the original text into exactly one sentence of 25 words, retaining all key facts clearly and concisely."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Exactly 25 words and one sentence. Accurately preserves the main findings, trade-off, and early withdrawals, though it omits that the added administrative work was per shift."
    },
    {
     "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": "Early results show the drug reduced symptoms in about 60% of patients. However, this finding is preliminary: the sample included only 34 people, all under 40, and lacked a control group, so results cannot yet be generalized or considered conclusive.",
   "latency_ms": 3427,
   "cost": 0.000966,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly summarizes the text in 40 words (well under the 60-word limit) while accurately preserving all the crucial limitations regarding sample size, demographics, and the lack of a control group."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Accurately preserves the 60% result and all key limitations: small sample, under-40 participants, no control group, and preliminary status. It is clear, concise, useful, and under 60 words."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate summary under 60 words; all key 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 favours cutting price to boost market share, believing higher volume will offset the lower margin. Finance is more cautious, pointing to 2024's price cut, which delivered only a 4% volume increase but cost 11% in margin. Finance argues that reallocating the same budget toward customer retention would deliver better returns than repeating a strategy with a proven poor trade-off.",
   "latency_ms": 4279,
   "cost": 0.001452,
   "task_score": 9,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response accurately and fairly summarizes the disagreement within the 80-word limit (61 words). It clearly articulates both Marketing's volume-driven argument and Finance's margin-focused, data-backed counterargument, making it highly u"
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, concise, and under 80 words. It presents both positions clearly and includes the key 2024 evidence. Slightly favors Finance by characterizing the prior result as a “proven poor trade-off,” a stronger conclusion than stated."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate fair summary under 80 words with equal weight; minor polish possible but expert-level."
    }
   ]
  },
  {
   "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:** The launch date will remain in September (not moved to October).\n\n**Decided by:** A (with agreement from B and confirmation from C on packaging timing).",
   "latency_ms": 3014,
   "cost": 0.000802,
   "task_score": 5,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 5,
     "violates": true,
     "reasoning": "Accurately captures the decision and the decision-maker, but fails the explicit constraint to state it in exactly one line."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 5,
     "violates": true,
     "reasoning": "Correctly identifies that the launch remains in September and that A made the decision. It adds unnecessary attribution to B and C, but remains accurate overall. It violates the explicit one-line requirement by using two labeled lines."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 5,
     "violates": true,
     "reasoning": "Correctly identifies September launch decision by A. Clear and useful but multi-line format ignores explicit one-line requirement."
    }
   ]
  },
  {
   "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 achieved a 19% improvement in the primary outcome measure versus the comparison group.",
   "latency_ms": 2846,
   "cost": 0.000722,
   "task_score": 10,
   "judges": [
    {
     "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."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "It is concise, under 40 words, and retains all four numbers and the comparison group. “Achieved” is slightly stronger than the original “reported,” which could imply a more certain causal claim."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Keeps all four numbers, under 40 words, accurate compression, clear and 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": "**Summary:**\n\nThe 9-month migration (40 services) requires 3 months of dual-running, meaning double platform costs during that period. Exiting the old contract before June triggers a penalty—so timing must align to avoid extra fees. Upside: a projected 30% drop in incidents post-migration, reducing operational risk longer-term.\n\n**Bottom line:** Short-term cost overlap and a contract penalty risk, offset by future reliability gains.",
   "latency_ms": 4221,
   "cost": 0.001728,
   "task_score": 9,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "Perfectly tailored to the finance director, highlighting only cost and risk. Meets the under 70-word constraint (62 words) and is highly concise and actionable."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 9,
     "violates": false,
     "reasoning": "Accurately highlights dual-running cost overlap, early-exit penalty risk, and expected incident reduction. It is concise, finance-focused, and under 70 words. “Double platform costs” slightly overstates the source, which only confirms payin"
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate cost/risk focus, under 70 words, clear and useful for finance director; minor formatting extras 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\n- Demand growing 20% a year (capacity/scalability pressure)\n- Warehouse lease ends in 14 months\n- Finance system unsupported after next April\n- 90-day payment terms with largest customer (cash flow risk)",
   "latency_ms": 3821,
   "cost": 0.001126,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all constraints: it lists exactly 5 risks as bullets, includes no preamble or solutions, and accurately extracts the risks from the provided text."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Exactly five risk-focused bullets, no solutions or preamble. It accurately captures all material risks and appropriately excludes low staff turnover as not a risk."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Perfectly lists only the 5 risks as bullets with no extras, preamble or solutions; fully matches all constraints."
    }
   ]
  },
  {
   "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-Using Small Businesses Grew Faster in 2025 Study\n\n**Standfirst:** Small firms that adopted AI tools saw 8% faster revenue growth than peers, though researchers caution the link may reflect correlation rather than causation.",
   "latency_ms": 3889,
   "cost": 0.001144,
   "task_score": 9,
   "judges": [
    {
     "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 captures the provided text in a highly readable format suitable for a non-technical professional."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, concise, and within both word limits. It clearly conveys the 8% association and causation caveat. Minor omissions include the UK scope, 1,200-firm sample, and “at least one” tool detail; headline wording is slightly awkward."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate summary within tight word limits; clear, concise, and fully compliant with all constraints."
    }
   ]
  },
  {
   "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 findings to summarise — this is a brief acknowledgment message confirming receipt and stating the task will be resumed on Monday.",
   "latency_ms": 2976,
   "cost": 0.000584,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response correctly identifies that there are no findings, states this plainly as instructed, and stays well under the 40-word limit."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Accurately states that there are no findings and briefly captures the message’s operational content. It is clear, concise, and well under 40 words."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Correctly identifies no findings and stays under 40 words; minor extra explanation is useful and clear without true padding."
    }
   ]
  }
 ]
}