{
 "entity": "deepseek-v4-pro",
 "entity_type": "model",
 "category": "Study notes",
 "suite": "suite-2026-08-tasks2/study-notes",
 "model": "deepseek/deepseek-v4-pro",
 "judges": [
  "anthropic/claude-sonnet-5",
  "google/gemini-3.1-pro-preview",
  "openai/gpt-5.6-terra"
 ],
 "judge_protocol": "judge-2026-08",
 "anchors": "solo-2026-08-a",
 "score": 85,
 "caps": 3,
 "cost_usd": 0.1361,
 "started_at": "2026-08-14T13:18:02.611Z",
 "finished_at": "2026-08-14T13:19:27.685Z",
 "tasks": [
  {
   "id": "st1",
   "name": "Condense a topic",
   "prompt": "Make revision notes on photosynthesis for GCSE level: maximum 10 bullet points, each under 15 words, must include the word equation, no sub-bullets.",
   "output": "- Photosynthesis is an endothermic reaction that stores light energy in glucose.\n- It occurs in chloroplasts containing green chlorophyll pigment.\n- Chlorophyll absorbs light energy needed for photosynthesis.\n- Carbon dioxide and water are the reactants required.\n- Glucose and oxygen are the products made.\n- Word equation: carbon dioxide + water → glucose + oxygen.\n- Glucose is used for respiration, growth, or stored as starch.\n- Limiting factors include light intensity, carbon dioxide level, and temperature.\n- Photosynthesis produces oxygen essential for most living organisms.\n- Rate can be measured by oxygen production or carbon dioxide uptake.",
   "latency_ms": 22704,
   "cost": 0.001831176,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "10 bullets, each under 15 words, includes word equation, no sub-bullets. Accurate, clear, concise, useful for GCSE revision."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, including the exact number of bullet points, word count limits per bullet, inclusion of the word equation, and no sub-bullets. Content is highly accurate and useful for GCSE revision."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate GCSE-level notes, exactly 10 bullets, each under 15 words. Includes the correct word equation, has no sub-bullets, and is clear and useful."
    }
   ]
  },
  {
   "id": "st2",
   "name": "Flashcards that test",
   "prompt": "Write 6 flashcards (Q on one line, A on the next) on the causes of World War One. Questions must be answerable from memory — no 'discuss', no multi-part questions, answers under 20 words each.",
   "output": "**Q:** What is the term for the policy of building up strong armed forces?\n**A:** Militarism\n\n**Q:** Which two nations were part of the alliance system's Central Powers?\n**A:** Germany and Austria-Hungary\n\n**Q:** What type of expansionist policy fueled rivalry over colonies?\n**A:** Imperialism\n\n**Q:** What intense patriotic feeling led nations to underestimate their rivals?\n**A:** Nationalism\n\n**Q:** Whose assassination in Sarajevo sparked the outbreak of war?\n**A:** Archduke Franz Ferdinand\n\n**Q:** What was the name of Germany's plan to quickly defeat France then Russia?\n**A:** The Schlieffen Plan",
   "latency_ms": 12864,
   "cost": 0.00029232,
   "task_score": 8,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Accurate, concise, all answers under 20 words, single-part questions answerable from memory. Minor: some questions slightly hint at answer, but overall meets constraints well."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing 6 accurate, concise flashcards formatted exactly as requested. The questions are simple, memory-based, and the answers are well under the 20-word limit."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Six correctly formatted flashcards with concise, accurate answers covering major causes. Minor oversimplification: nationalism is more directly linked to rivalry and ethnic tensions than underestimating rivals."
    }
   ]
  },
  {
   "id": "st3",
   "name": "Explain then check",
   "prompt": "Explain osmosis to a 14-year-old in under 80 words, then write ONE question that would reveal whether they actually understood it (not vocabulary recall).",
   "output": "Osmosis is water moving across a membrane from a region with more water (less dissolved stuff) to a region with less water (more dissolved stuff), until both sides are balanced. If a cell sits in salty water, water leaves and the cell shrinks. If it sits in pure water, water enters and it swells.\n\n**Question:** A raisin placed in pure water swells. Explain what is happening to the water molecules and why.",
   "latency_ms": 11243,
   "cost": 0.000582552,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, concise explanation under 80 words, plus a well-designed conceptual question testing understanding, not recall. Clear and useful for a teen."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly explains osmosis in under 80 words using age-appropriate language. The follow-up question effectively tests conceptual understanding rather than rote memorization."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Accurate, age-appropriate explanation well under 80 words, with clear examples. The single question requires applying the concept to explain water movement rather than recalling terminology."
    }
   ]
  },
  {
   "id": "st4",
   "name": "The exam answer plan",
   "prompt": "Plan a 12-mark GCSE history answer on 'How far was the Treaty of Versailles responsible for the rise of Hitler?' Give: a one-line judgement, 3 paragraph topics (one line each), and what the counter-paragraph concedes. No essay, just the plan, under 120 words.",
   "output": "Judgement: The Treaty of Versailles was highly significant in creating the grievances Hitler exploited, but it was not sufficient alone; the Depression and Weimar failures were equally vital.\n\nParagraph topics:\n1. Treaty terms such as war guilt, reparations and territorial losses bred nationalist anger that Hitler channelled.\n2. Reparations-related economic crises, especially 1923 hyperinflation, undermined confidence in Weimar democracy.\n3. Weimar’s proportional representation and Article 48 created chronic instability that made extremist solutions attractive.\n\nCounter-paragraph concedes: The Treaty gave Hitler a powerful propaganda weapon against the “November criminals” and a resentful audience, but it did not make his rise inevitable—the 1929 Wall Street Crash and conservative elites’ decision to appoint him were more immediate triggers.",
   "latency_ms": 13073,
   "cost": 0.000738108,
   "task_score": 8,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Well-structured, accurate plan meeting format; slightly over 120 words (~130), a minor breach of stated word limit."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing a concise and accurate plan for a GCSE history essay within the 120-word limit. The historical content is spot-on for the level."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Clear, concise plan with a balanced judgement, relevant Treaty and non-Treaty factors, and an effective concession. Hyperinflation being directly reparations-related is somewhat simplified, and the counterargument could distinguish Depressi"
    }
   ]
  },
  {
   "id": "st5",
   "name": "Mnemonic that works",
   "prompt": "Create a mnemonic for the order of operations (brackets, indices, division/multiplication, addition/subtraction) that is NOT 'BIDMAS/BODMAS' spelled out, plus one sentence on when the D/M order actually matters.",
   "output": "Here’s a fresh mnemonic:\n\n**\"Before I Dance, Make All Steps.\"**\n\n- **B**efore → **B**rackets  \n- **I** → **I**ndices (exponents, powers, roots)  \n- **Dance** → **D**ivision  \n- **Make** → **M**ultiplication  \n- **All** → **A**ddition  \n- **Steps** → **S**ubtraction  \n\n---\n\n**When D/M order actually matters:**  \nThe left-to-right order of division and multiplication only matters when a division appears *before* a multiplication in the expression, such as in `12 ÷ 3 × 2`, where solving strictly left-to-right gives 8, not 2.",
   "latency_ms": 10222,
   "cost": 0.00032451,
   "task_score": 8,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Creative valid mnemonic, correct explanation of D/M order; minor nitpick: example doesn't fully justify 'matters' claim depth, but accurate overall."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing a creative mnemonic and exactly one accurate sentence explaining when the left-to-right rule for division and multiplication matters."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 6,
     "violates": false,
     "reasoning": "The mnemonic is clear and maps correctly to the operations. However, the D/M explanation is inaccurate: left-to-right sequencing matters for any mixed multiplication/division chain, including multiplication before division; they share equal"
    }
   ]
  },
  {
   "id": "st6",
   "name": "Spot the misconception",
   "prompt": "A student writes: 'Heavier objects fall faster, that's why a hammer hits the ground before a feather.' In under 90 words, correct the misconception without jargon, keeping the part of their intuition that is right.",
   "output": "Your intuition is right that on Earth a hammer usually lands before a feather—but it’s because of air resistance, not weight. Air pushes back much more on a light, spread-out feather than on a compact hammer. Without air, like on the Moon, they fall together and hit the ground at the same time. So heavier objects don’t fall faster by themselves; air changes the result.",
   "latency_ms": 6055,
   "cost": 0.000241164,
   "task_score": 9,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, clear, jargon-free, preserves valid intuition, within word limit (~72 words)."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly addresses the prompt, correcting the misconception accurately without jargon, validating the student's correct intuition, and staying well under the 90-word limit."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 9,
     "violates": false,
     "reasoning": "Accurately corrects the misconception, preserves the student’s observation, and clearly explains air’s role in plain language. The Moon example is apt. “Air resistance” is slightly technical but immediately explained."
    }
   ]
  },
  {
   "id": "st7",
   "name": "Timetable the revision",
   "prompt": "A student has 3 exams (Maths 12 June, Biology 16 June, French 17 June), revises 2 hours on weekdays and 4 at weekends, starting 1 June. Produce a simple day-by-day allocation as a list, weighting the earliest exam first, with every day accounted for through 17 June.",
   "output": "Here’s a simple day-by-day revision plan from 1 June to 17 June, based on:  \n- **Maths**: 12 June (earliest → highest priority)  \n- **Biology**: 16 June  \n- **French**: 17 June  \n- Study hours: 2 hours on weekdays (Mon–Fri), 4 hours on weekends (Sat–Sun)  \n\nI’ve weighted Maths heavily early on, then shifted time to Biology and French after Maths is done.\n\n---\n\n### June 1 (Sun) – 4 hours  \n- Maths: 3 hours  \n- Biology: 1 hour  \n\n### June 2 (Mon) – 2 hours  \n- Maths: 2 hours  \n\n### June 3 (Tue) – 2 hours  \n- Maths: 1.5 hours  \n- Biology: 0.5 hours  \n\n### June 4 (Wed) – 2 hours  \n- Maths: 1.5 hours  \n- French: 0.5 hours  \n\n### June 5 (Thu) – 2 hours  \n- Maths: 2 hours  \n\n### June 6 (Fri) – 2 hours  \n- Maths: 1 hour  \n- Biology: 0.5 hours  \n- French: 0.5 hours  \n\n### June 7 (Sat) – 4 hours  \n- Maths: 3 hours  \n- Biology: 1 hour  \n\n### June 8 (Sun) – 4 hours  \n- Maths: 2.5 hours  \n- Biology: 1 hour  \n- French: 0.5 hours  \n\n### June 9 (Mon) – 2 hours  \n- Maths: 2 hours  \n\n### June 10 (Tue) – 2 hours  \n- Maths: 1 hour  \n- Biology: 0.5 hours  \n- French: 0.5 hours  \n\n### June 11 (Wed) – 2 hours  \n- Maths: 2 hours  \n\n### June 12 (Thu) – **MATHS EXAM** (no revision)  \n\n### June 13 (Fri) – 2 hours  \n- Biology: 1.5 hours  \n- French: 0.5 hours  \n\n### June 14 (Sat) – 4 hours  \n- Biology: 3 hours  \n- French: 1 hour  \n\n### June 15 (Sun) – 4 hours  \n- Biology: 2.5 hours  \n- French: 1.5 hours  \n\n### June 16 (Mon) – **BIOLOGY EXAM** (no revision)  \n\n### June 17 (Tue) – **FRENCH EXAM** (no revision)  \n\n---\n\nEvery day from 1–17 June is accounted for, with more time given to the earliest exam first and a smooth transition toward later exams. Let me know if you’d like an adjusted version.",
   "latency_ms": 58673,
   "cost": 0.00108315,
   "task_score": 6,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 6,
     "violates": false,
     "reasoning": "Covers all days, weights Maths early, but weekday/weekend labeling errors (dates don't match June 2024 actual weekdays), no revision on exam days is reasonable but not explicitly required. Otherwise clear and useful."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing a clear day-by-day list from June 1 to 17. It correctly applies the weekday/weekend hour rules, prioritizes the earliest exam, and accounts for every day."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 5,
     "violates": true,
     "reasoning": "Clear, complete, and sensibly weighted, with correct daily totals on non-exam days. However, it assumes a calendar year for weekday labels and assigns no revision on three weekdays, despite the stated 2-hours-on-weekdays requirement."
    }
   ]
  },
  {
   "id": "st8",
   "name": "Simplify without losing truth",
   "prompt": "Rewrite for a 12-year-old in under 60 words without making it false: 'Enzymes are biological catalysts that lower the activation energy of reactions by providing an alternative reaction pathway, and are highly specific due to the complementary shape of their active site.'",
   "output": "Enzymes are like tiny helpers in your body that speed up chemical reactions. They work by offering an easier path for the reaction, like a shortcut. Each enzyme is specially shaped to fit only certain molecules, like a lock and key.",
   "latency_ms": 40527,
   "cost": 0.000174174,
   "task_score": 9,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, simple, under 60 words (41), clear analogy for a 12-year-old, faithful to original meaning."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly translates the complex biological concepts into an accurate, easy-to-understand explanation suitable for a 12-year-old, while remaining well under the 60-word limit."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 8,
     "violates": false,
     "reasoning": "Clear, age-appropriate, and under 60 words. It accurately conveys faster reactions, an easier pathway, and shape-based specificity. Minor simplifications: it does not explicitly mention lowering activation energy, and “only certain molecule"
    }
   ]
  },
  {
   "id": "st9",
   "name": "Quiz from notes",
   "prompt": "From this note, write 4 quiz questions with answers, at least one requiring application rather than recall: 'Supply and demand: when price rises, quantity demanded falls (movement along the curve). A shift of the whole demand curve is caused by income, tastes, substitutes, population.'",
   "output": "Here are four quiz questions based on your note, complete with answers.\n\n---\n\n**1. Recall**\nWhat is the relationship between price and quantity demanded, and what does it represent on a demand curve?\n- **Answer:** When price rises, quantity demanded falls. This represents a movement along the demand curve.\n\n**2. Recall**\nList the four factors mentioned that cause a shift of the entire demand curve.\n- **Answer:** Income, tastes, substitutes, and population.\n\n**3. Application**\nSuppose the price of movie tickets increases, and at the same time a hit new streaming service is released. What happens to the quantity of movie tickets demanded versus the demand curve itself? Explain both effects.\n- **Answer:** The increase in ticket prices causes a decrease in the quantity demanded, shown by a movement up along the existing demand curve. The release of a popular streaming service changes tastes (or acts as a new substitute), causing the entire demand curve for movie tickets to shift to the left.\n\n**4. Interpretation**\nIs an increase in demand caused by a rise in population shown by a shift of the demand curve or a movement along it? Justify your answer using the terminology from the note.\n- **Answer:** A shift of the demand curve. The note specifies that population changes are a cause of a shift in the whole demand curve, not a movement along it triggered by a price change.",
   "latency_ms": 6918,
   "cost": 0.0015717,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, well-structured, includes application question with clear explanation, meets requirements concisely and usefully."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, providing exactly 4 accurate questions and answers based on the text, including a clear application question. It is concise and highly useful."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Provides exactly four clear questions with answers, including a genuine application scenario. Accurately distinguishes movements along the demand curve from shifts caused by income, tastes, substitutes, and population. Well organized and us"
    }
   ]
  },
  {
   "id": "st10",
   "name": "Compare for the exam",
   "prompt": "Make a two-column comparison (markdown table, max 6 rows) of mitosis vs meiosis a GCSE student could memorise: chromosome number, divisions, daughter cells, variation, where it happens, purpose.",
   "output": "| Feature | Mitosis | Meiosis |\n|---|---|---|\n| Chromosome number | Stays the same: diploid → diploid (46 → 46) | Halves: diploid → haploid (46 → 23) |\n| Divisions | 1 division | 2 divisions |\n| Daughter cells | 2 daughter cells | 4 daughter cells |\n| Variation | No variation – genetically identical clones | Variation – genetically different |\n| Where it happens | Body cells (e.g. skin, gut) | Reproductive organs (ovaries / testes) |\n| Purpose | Growth, repair, asexual reproduction | Produce gametes for sexual reproduction |",
   "latency_ms": 11834,
   "cost": 0.000997542,
   "task_score": 5,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 9,
     "violates": false,
     "reasoning": "Accurate, clear, exactly 6 rows as required, memorable format for GCSE students, concise and correct content."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 5,
     "violates": true,
     "reasoning": "The response violates the constraints by providing a 3-column table instead of a 2-column one, and the markdown table contains 8 rows (including header and delimiter) exceeding the maximum of 6 rows."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 5,
     "violates": true,
     "reasoning": "Accurate, concise, GCSE-appropriate coverage of all six requested points. However, it uses three columns (Feature, Mitosis, Meiosis), not the explicitly requested two-column table."
    }
   ]
  },
  {
   "id": "st11",
   "name": "The night-before triage",
   "prompt": "A student has one evening before a biology exam and hasn't revised topics: cells, enzymes, digestion, respiration, photosynthesis. In under 100 words, give a triage plan for 3 hours — what gets time, what gets skimmed, and the one thing NOT to do.",
   "output": "**Triage plan (3 hours):**  \n- **Respiration & photosynthesis (1.5 hrs):** Master equations, diagrams, ATP yield.  \n- **Cells & enzymes (1 hr):** Focus on organelles, lock-and-key model, factors affecting activity.  \n- **Digestion (30 min):** Skim for enzyme names, sites, products.  \n\n**One thing NOT to do:** Don’t passively re-read notes. Actively test recall by drawing processes from memory.",
   "latency_ms": 8653,
   "cost": 0.00185484,
   "task_score": 9,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Clear, useful triage plan, follows word limit and structure well; concise and reasonable prioritization, minor debatable allocation choices."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, including the word count constraint (56 words). It logically allocates the 3 hours, clearly identifies what to study deeply versus skim, and provides a highly practical 'not to do' tip."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 9,
     "violates": false,
     "reasoning": "Clear, practical 3-hour allocation covering all topics, with appropriate prioritization and an effective warning against passive rereading. It is under 100 words. Minor caveat: exact ATP yields may be curriculum-specific and lower priority "
    }
   ]
  },
  {
   "id": "st12",
   "name": "Refuse to do the homework",
   "prompt": "A student pastes an essay question and says 'write this so I can hand it in'. Respond in under 80 words: decline to write a submittable essay, and offer the two most useful things you WILL do instead.",
   "output": "I can’t write an essay for you to submit—that would be plagiarism. Instead, I’d be glad to help you brainstorm strong arguments and shape a clear outline so you can write it yourself. Would that work?",
   "latency_ms": 4540,
   "cost": 0.00093062,
   "task_score": 10,
   "judges": [
    {
     "judge": "anthropic/claude-sonnet-5",
     "score": 8,
     "violates": false,
     "reasoning": "Correctly declines, offers two useful alternatives, concise and under 80 words. Slightly informal but clear and meets task requirements well."
    },
    {
     "judge": "google/gemini-3.1-pro-preview",
     "score": 10,
     "violates": false,
     "reasoning": "The response perfectly follows all instructions, staying well under the word limit, clearly declining the request, and offering two highly useful alternatives for the student."
    },
    {
     "judge": "openai/gpt-5.6-terra",
     "score": 10,
     "violates": false,
     "reasoning": "Clearly declines to produce a submittable essay, offers exactly two useful alternatives—brainstorming arguments and creating an outline—and stays well under 80 words. Professional, concise, and directly responsive."
    }
   ]
  }
 ]
}