{"_id": {"$oid": "69d4eb12b877594bc5718d7b"}, "test_id": "T0556", "benchmark": "business_letters", "date": "2026-03-31", "tags": {"document-type": ["letter"], "writing": ["typed", "handwritten"], "century": [20], "language": ["de"], "layout": ["prose"], "entry-type": ["person", "location"], "task": ["information-extraction"]}, "contributors": ["eric_decker", "maximilian_hindermann", "lea_kasper", "anthea_alberto", "pema_frick", "jose_luis_losada_palenzuela", "sorin_marti", "elena_spadini"], "hidden": false, "config": {"provider": "mistral", "model": "ministral-8b-2512", "dataclass": "Document", "temperature": 0.0, "role_description": "You are a historian with keyword knowledge and an expert in the field of 20th century Swiss history. You only return valid JSON an no other text.", "prompt_file": "prompt.txt", "rules": "{\"skip_signatures\": true, \"skip_non_signatures\": false}", "legacy_test": false}, "prompt": "            IDENTITY and PURPOSE:\n\n            You are presented with a series of images constituting a historical letter. Your task is to extract the\n            values of the following keys from the letter and return them in a JSON file where the values\n            corresponding to each key should be stored as a list, even if there is only a single value for a\n            key:\n\n            - letter_title: Title of the letter.\n            - sender_persons: Name(s) of the person(s) who wrote the letter.\n            - send_date: The exact or approximate date the letter was written.\n            - receiver_persons: Name(s) of the person(s) who received the letter.\n\n            Take a deep breath and think step by step about how to best accomplish this goal. Map out all the claims\n            and implications on a virtual whiteboard in your mind. Do not use OCR. Use the ISO format YYYY-MM-DD for\n            dates. If a piece of information is not included in the letter, set the value for the corresponding key\n            to \"null\". Do not return anything except the JSON file.\n\n            EXAMPLE:\n\n            {\n                \"letter_title\": [\"Petition for Environmental Protection\"],\n                \"send_date\": [\"1993-03-12\"],\n                \"sender_persons\": [\"Lisa Simpson\"],\n                \"receiver_persons\": [\"Mayor Joe Quimby\", \"Seymour Skinner\"],\n            }\n\n            OUTPUT:", "results": {"text": "{\"metadata\":{\"send_date\":[\"null\"],\"letter_title\":[\"null\"],\"sender_persons\":[\"null\"],\"receiver_persons\":[\"null\"]}}", "model": "ministral-8b-2512", "provider": "mistral", "finish_reason": "stop", "usage": {"input_tokens": 585, "output_tokens": 407, "total_tokens": 992, "input_cost_usd": 8.775e-05, "output_cost_usd": 6.105e-05, "estimated_cost_usd": 0.0001488}, "duration": 2.836698293685913, "timestamp": "2026-03-31T11:40:05.900863", "parsed": {"$defs": {"Metadata": {"properties": {"letter_title": {"anyOf": [{"items": {"type": "string"}, "type": "array"}, {"type": "null"}], "title": "Letter Title"}, "send_date": {"anyOf": [{"items": {"type": "string"}, "type": "array"}, {"type": "null"}], "title": "Send Date"}, "sender_persons": {"anyOf": [{"items": {"type": "string"}, "type": "array"}, {"type": "null"}], "title": "Sender Persons"}, "receiver_persons": {"anyOf": [{"items": {"type": "string"}, "type": "array"}, {"type": "null"}], "title": "Receiver Persons"}}, "required": ["letter_title", "send_date", "sender_persons", "receiver_persons"], "title": "Metadata", "type": "object"}}, "properties": {"metadata": {"$ref": "#/$defs/Metadata"}}, "required": ["metadata"], "title": "Document", "type": "object", "metadata": {"letter_title": ["null"], "send_date": ["null"], "sender_persons": ["null"], "receiver_persons": ["null"], "document_number": "letter12"}}, "conversation_id": "c083bcca-b519-4b9a-bd0d-199e5a2125ce", "score": {"send_date_tp": 0, "send_date_fp": 0, "send_date_fn": 1, "sender_persons_tp": 0, "sender_persons_fp": 0, "sender_persons_fn": 2, "receiver_persons_tp": 0, "receiver_persons_fp": 0, "receiver_persons_fn": 1}, "raw_response": "{\"id\":\"b81e3e0c9a0742c089f1399d9a638cb9\",\"object\":\"chat.completion\",\"model\":\"ministral-8b-2512\",\"usage\":{\"prompt_tokens\":585,\"completion_tokens\":407,\"total_tokens\":992,\"prompt_tokens_details\":{\"cached_tokens\":0}},\"created\":1774950003,\"choices\":[{\"index\":0,\"message\":{\"role\":\"assistant\",\"content\":\"{\\n    \\\"$defs\\\": {\\n        \\\"Metadata\\\": {\\n            \\\"properties\\\": {\\n                \\\"letter_title\\\": {\\n                    \\\"anyOf\\\": [\\n                        {\\n                            \\\"items\\\": {\\n                                \\\"type\\\": \\\"string\\\"\\n                            },\\n                            \\\"type\\\": \\\"array\\\"\\n                        },\\n                        {\\n                            \\\"type\\\": \\\"null\\\"\\n                        }\\n                    ],\\n                    \\\"title\\\": \\\"Letter Title\\\"\\n                },\\n                \\\"send_date\\\": {\\n                    \\\"anyOf\\\": [\\n                        {\\n                            \\\"items\\\": {\\n                                \\\"type\\\": \\\"string\\\"\\n                            },\\n                            \\\"type\\\": \\\"array\\\"\\n                        },\\n                        {\\n                            \\\"type\\\": \\\"null\\\"\\n                        }\\n                    ],\\n                    \\\"title\\\": \\\"Send Date\\\"\\n                },\\n                \\\"sender_persons\\\": {\\n                    \\\"anyOf\\\": [\\n                        {\\n                            \\\"items\\\": {\\n                                \\\"type\\\": \\\"string\\\"\\n                            },\\n                            \\\"type\\\": \\\"array\\\"\\n                        },\\n                        {\\n                            \\\"type\\\": \\\"null\\\"\\n                        }\\n                    ],\\n                    \\\"title\\\": \\\"Sender Persons\\\"\\n                },\\n                \\\"receiver_persons\\\": {\\n                    \\\"anyOf\\\": [\\n                        {\\n                            \\\"items\\\": {\\n                                \\\"type\\\": \\\"string\\\"\\n                            },\\n                            \\\"type\\\": \\\"array\\\"\\n                        },\\n                        {\\n                            \\\"type\\\": \\\"null\\\"\\n                        }\\n                    ],\\n                    \\\"title\\\": \\\"Receiver Persons\\\"\\n                }\\n            },\\n            \\\"required\\\": [\\n                \\\"letter_title\\\",\\n                \\\"send_date\\\",\\n                \\\"sender_persons\\\",\\n                \\\"receiver_persons\\\"\\n            ],\\n            \\\"title\\\": \\\"Metadata\\\",\\n            \\\"type\\\": \\\"object\\\"\\n        }\\n    },\\n    \\\"properties\\\": {\\n        \\\"metadata\\\": {\\n            \\\"$ref\\\": \\\"#/$defs/Metadata\\\"\\n        }\\n    },\\n    \\\"required\\\": [\\n        \\\"metadata\\\"\\n    ],\\n    \\\"title\\\": \\\"Document\\\",\\n    \\\"type\\\": \\\"object\\\",\\n    \\\"metadata\\\": {\\n        \\\"letter_title\\\": [\\\"null\\\"],\\n        \\\"send_date\\\": [\\\"null\\\"],\\n        \\\"sender_persons\\\": [\\\"null\\\"],\\n        \\\"receiver_persons\\\": [\\\"null\\\"]\\n    }\\n}\",\"tool_calls\":null,\"prefix\":false},\"finish_reason\":\"stop\"}]}"}, "scoring": {"f1_macro": 0.0, "f1_micro": 0.0, "cost_summary": {"total_input_tokens": 585, "total_output_tokens": 407, "total_tokens": 992, "input_cost_usd": 8.775e-05, "output_cost_usd": 6.105e-05, "total_cost_usd": 0.0001488}}, "normalized_score": 0}