{
 "entity": "claude-fable-5",
 "entity_type": "model",
 "category": "Summarising",
 "suite": "suite-2026-08-tasks/summarising",
 "model": "anthropic/claude-fable-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": 96,
 "caps": 1,
 "cost_usd": 0.2121,
 "started_at": "2026-08-13T09:36:16.037Z",
 "finished_at": "2026-08-13T09:36:46.865Z",
 "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- Add updated cashflow to the board pack before the 20th — Priya (conditional on having the numbers)\n- Reconcile the March invoices — unassigned",
   "latency_ms": 4865,
   "cost": 0.00646,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly extracts all action items, assigns the correct owners (including 'unassigned'), and formats them as a bulleted list containing only the requested information."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "All actionable items are captured, non-actions are excluded, each item has an owner or 'unassigned,' and Priya's cashflow responsibility is accurately presented as conditional."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurately extracts all action items with correct owners in required bullet format; minor extra detail on condition is helpful and faithful."
    }
   ]
  },
  {
   "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, with new retail channel contributing £310k.\n- Margins fell from 41% to 37% due to shipping costs and warehouse move.\n- Headcount unchanged at 34 employees.\n- Key Q4 risk: supplier contract expires November, not yet renegotiated.\n- Cash at bank stands at £620k.",
   "latency_ms": 5175,
   "cost": 0.00897,
   "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 summarizes the key points for a busy professional."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Exactly five bullets, each under 15 words. Accurately captures all key Q3 metrics, drivers, margin causes, headcount, Q4 risk, and cash position clearly and concisely."
    },
    {
     "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: What the scheme actually is or what it involves.",
   "latency_ms": 5305,
   "cost": 0.00477,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, keeping the summary under 50 words and accurately identifying a missing piece of information on a separate line starting with 'Not stated: '."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Accurately includes all stated facts, remains under 50 words, adds no unsupported facts, and provides the required separate “Not stated:” line with a useful missing detail."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Perfect summary under 50 words, no added facts, correct separate line with a relevant 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": "An eighteen-month, four-hospital trial found the new triage system cut waiting times by 22 minutes, despite added administrative work and two sites abandoning it.\n\n(24 words)",
   "latency_ms": 4328,
   "cost": 0.00485,
   "task_score": 8,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 5,
     "violates": true,
     "reasoning": "The response successfully condenses the text, but includes an extra fragment '(24 words)' which violates the constraint of providing ONLY one sentence of no more than 25 words (total words = 27)."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Meets the one-sentence, 25-word limit (24 words) and accurately preserves the main finding and both drawbacks. It omits the roughly ten-minute-per-shift administrative burden, a minor loss of specificity."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate one-sentence summary under 25 words capturing key facts; minor omission of admin time detail but fully compliant and clear."
    }
   ]
  },
  {
   "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 indicate the drug reduced symptoms in roughly 60% of patients. However, the study involved just 34 participants, all under 40, and lacked a control group — so the results are preliminary and cannot yet be generalised or confirmed as caused by the drug itself.\n\n*(45 words)*",
   "latency_ms": 5141,
   "cost": 0.00693,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly summarizes the text in 45 words (well under the 60-word limit) while clearly retaining all the critical limitations regarding sample size, age, and lack of a control group."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Accurately preserves the 60% finding and all key limitations: small sample, under-40 population, no control group, and preliminary status. It is clear, useful, and well under 60 words."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate summary under 60 words; all key limitations preserved and slightly clarified. Minor tense shift and added phrasing do not harm fidelity or usefulness."
    }
   ]
  },
  {
   "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 proposes a price cut to gain market share, believing increased sales volume will offset the lower per-unit revenue. Finance opposes this, citing the 2024 precedent where a price cut delivered only a 4% volume increase while costing 11% in margin. Instead, Finance would prefer investing the equivalent budget in customer retention. The core disagreement is whether discounting drives sufficient growth to justify its cost, or whether retaining existing customers offers better returns.",
   "latency_ms": 6080,
   "cost": 0.00961,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly summarizes the disagreement, giving equal weight to both Marketing and Finance. It accurately includes the specific figures and alternatives, and stays under the 80-word limit (74 words)."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate, balanced 73-word summary. It clearly presents Marketing’s volume rationale and Finance’s evidence-based margin concern and retention alternative, while neutrally stating the central trade-off."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate fair summary under 80 words with equal weight; clear, concise, fully follows all constraints."
    }
   ]
  },
  {
   "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 stays in September — decided by A (\"fine, September stands then\"), after B's objection and C's confirmation that packaging arrives 2 Sept.",
   "latency_ms": 5969,
   "cost": 0.00551,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response accurately identifies the decision and the decision-maker in a single, concise line, perfectly fulfilling all instructions."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Accurately identifies the decision (launch remains in September) and attributes the final decision to A. It is concise, clear, and presented in one line."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate one-line summary of decision and decider; minor extra context but fully meets task, 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 achieved a 19% improvement in the primary outcome versus the comparison group.\n\n(23 words — all four figures retained: 3 years, £2.1m, 14,000 participants, 19% improvement.)",
   "latency_ms": 5570,
   "cost": 0.00706,
   "task_score": 8,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 8,
     "violates": false,
     "reasoning": "The response successfully compresses the text while retaining all four numbers. However, including the parenthetical word count was unnecessary and slightly detracts from concision, though the total word count remains under the 40-word limi"
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "It is concise, retains all four figures and the comparison group, and stays under 40 words even including the parenthetical. Minor issue: “achieved” is stronger than the source’s “reported,” slightly overstating certainty."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Perfect compression under 40 words retaining all four numbers and core meaning; clear, accurate, fully compliant 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": "**Cost:** 3 months of dual-platform payments during the 9-month migration of 40 services, plus a penalty if the old contract is exited before June — timing the exit matters.\n\n**Risk:** Incidents are expected to fall 30% post-migration, reducing operational risk. Main exposures are the dual-running overlap and early-exit penalty; both are manageable with careful scheduling.",
   "latency_ms": 6347,
   "cost": 0.00764,
   "task_score": 9,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "Flawless response. It strictly adheres to the under 70-word constraint (54 words), perfectly targets the finance director by categorizing into Cost and Risk, and accurately captures all financial and risk-related details from the prompt."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Accurately captures dual-running cost, early-exit penalty, and expected incident reduction within the word limit. Clear finance-focused structure. “Both are manageable” is unsupported, and dual-running is framed as a risk without specifying"
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate cost/risk focus under 70 words; clear structure, 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\n- Warehouse lease expiring in 14 months\n- Finance system losing support after next April\n- 90-day payment terms with largest customer straining cash flow\n- Capacity strain from 20% annual demand growth",
   "latency_ms": 4744,
   "cost": 0.00623,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing exactly five accurate risks as bullets with no preamble or solutions."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Identifies all material risks, stays within five bullets, includes no solutions or preamble, and is concise and clear."
    },
    {
     "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": "**Headline:**\nAI-Adopting Small Businesses Grow Faster — But Why?\n\n**Standfirst:**\nA study of 1,200 UK firms links AI tool adoption to 8% faster revenue growth, though researchers caution that thriving businesses may simply embrace new technology sooner.",
   "latency_ms": 5288,
   "cost": 0.00797,
   "task_score": 10,
   "judges": [
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly captures the provided information, strictly adheres to the word count and sentence constraints, and is highly clear and useful."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Clear, accurate and within both word limits. It preserves the key association and causality caveat, but omits that adoption meant at least one tool and occurred in 2025."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Perfect adherence to word limits; accurate, clear, concise summary of the study findings and caveat."
    }
   ]
  },
  {
   "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. The text is a brief acknowledgement confirming receipt of something and stating the sender will address it on Monday.",
   "latency_ms": 5011,
   "cost": 0.00297,
   "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, explains the text concisely, and stays well under the 40-word limit."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Correctly states that there are no substantive findings, while concisely identifying the message as an acknowledgement and commitment to address the matter Monday. It is clear, accurate, and well under 40 words."
    },
    {
     "judge": "x-ai/grok-4.5",
     "score": 10,
     "violates": false,
     "reasoning": "Correctly notes no findings; explains plainly in 28 words; fully follows task; clear and useful."
    }
   ]
  }
 ]
}