{"_id": {"$oid": "6a671d25338dadb0be4e82b9"}, "test_id": "T0998", "benchmark": "business_letters", "date": "2026-04-21", "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": "openrouter", "model": "google/gemma-4-26b-a4b-it", "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", "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\":[\"1938-07-14\"],\"letter_title\":[\"null\"],\"sender_persons\":[\"null\"],\"receiver_persons\":[\"Redaktion der 'Basler Nachrichten'\"]}}", "model": "google/gemma-4-26b-a4b-it-20260403", "provider": "openrouter", "finish_reason": "stop", "usage": {"input_tokens": 632, "output_tokens": 71, "total_tokens": 703, "cached_tokens": 352, "input_cost_usd": 5.056e-05, "output_cost_usd": 2.485e-05, "estimated_cost_usd": 7.541e-05}, "duration": 6.132216453552246, "timestamp": "2026-04-21T13:41:33.861248", "parsed": {"metadata": {"send_date": ["1938-07-14"], "letter_title": ["null"], "sender_persons": ["null"], "receiver_persons": ["Redaktion der 'Basler Nachrichten'"], "document_number": "letter11"}}, "conversation_id": "943d016b-7ef8-4094-95ca-15c9e9bec3cb", "score": {"send_date_tp": 0, "send_date_fp": 1, "send_date_fn": 1, "sender_persons_tp": 0, "sender_persons_fp": 0, "sender_persons_fn": 0, "receiver_persons_tp": 0, "receiver_persons_fp": 1, "receiver_persons_fn": 0}, "raw_response": "{\"id\":\"gen-1776771688-cOTGI8DKYxUmVIe2CZw9\",\"choices\":[{\"finish_reason\":\"stop\",\"index\":0,\"logprobs\":null,\"message\":{\"content\":\"{\\n    \\\"metadata\\\": {\\n        \\\"send_date\\\": [\\\"1938-07-14\\\"],\\n        \\\"letter_title\\\": [\\\"null\\\"],\\n        \\\"sender_persons\\\": [\\\"null\\\"],\\n        \\\"receiver_persons\\\": [\\\"Redaktion der 'Basler Nachrichten'\\\"]\\n    }\\n}\",\"refusal\":null,\"role\":\"assistant\",\"annotations\":null,\"audio\":null,\"function_call\":null,\"tool_calls\":null,\"parsed\":{\"metadata\":{\"send_date\":[\"1938-07-14\"],\"letter_title\":[\"null\"],\"sender_persons\":[\"null\"],\"receiver_persons\":[\"Redaktion der 'Basler Nachrichten'\"]}},\"reasoning\":null},\"native_finish_reason\":\"stop\"}],\"created\":1776771688,\"model\":\"google/gemma-4-26b-a4b-it-20260403\",\"object\":\"chat.completion\",\"service_tier\":null,\"system_fingerprint\":null,\"usage\":{\"completion_tokens\":71,\"prompt_tokens\":632,\"total_tokens\":703,\"completion_tokens_details\":{\"accepted_prediction_tokens\":null,\"audio_tokens\":0,\"reasoning_tokens\":0,\"rejected_prediction_tokens\":null,\"image_tokens\":0},\"prompt_tokens_details\":{\"audio_tokens\":0,\"cached_tokens\":352,\"cache_write_tokens\":0,\"video_tokens\":0},\"cost\":0.00006488,\"is_byok\":false,\"cost_details\":{\"upstream_inference_cost\":0.00006488,\"upstream_inference_prompt_cost\":0.00003648,\"upstream_inference_completions_cost\":0.0000284}},\"provider\":\"Ionstream\"}"}, "scoring": {"f1_macro": 0.44, "f1_micro": 0.53, "cost_summary": {"total_input_tokens": 18480, "total_output_tokens": 1980, "total_tokens": 20460, "input_cost_usd": 0.0014784000000000004, "output_cost_usd": 0.000693, "total_cost_usd": 0.0021714000000000004}}, "normalized_score": 44.0}