Run: 2026-07-25-01KYCR365NJNXZKD02BPWZ81P9

Run Details

Duration:
25.5s
Cost:
$0.057100
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
94.44% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The rain had been falling on Ashgrove since last Tuesday. Detective Inspector Maren Volk parked beside the frozen garden gate. Two constables stood beneath the yew tree, saying absolutely nothing. She noted their pale faces, then walked toward the door. Inside, the house smelled of woodsmoke, lilies, and something worse. The body lay across the library carpet, arms folded neatly. Someone had arranged him with care, which troubled her most. Sir Edmund Carew had died sometime before eleven last night. His reading glasses rested on a book about Roman law. The open page was marked with a single dark hair. Maren crouched down and studied the wound without any hurry. A narrow puncture, clean, placed precisely below the left collarbone. No blood had reached the carpet, which seemed quite impossible. Behind her, a woman coughed politely from the hallway shadows. The housekeeper announced she had discovered him just after dawn. Maren stood, brushing dust from her knees, and turned around. "Tell me," she said, "who else slept in this house?" The woman hesitated, counting silently, then answered: seven people total. By morning, only six of those seven were still breathing.
created_at"2026-07-25T13:40:35.133Z" 7/25/2026, 1:40:35 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3606
moderation_latency(null)
generation_time25422
tokens_prompt46
tokens_completion710
native_tokens_prompt60
native_tokens_completion2272
native_tokens_completion_images(null)
native_tokens_reasoning412
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.0571
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsTDpygEPVwFWUNsFDD"
is_byokfalse
latency1385
model_permaslug"anthropic/claude-opus-5-20260723"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784986835-Mb4buPv4jOejvyIlay6g"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986835-orfDLic00ORhXVGKQbla"
upstream_id"msg_011CdNsTDpygEPVwFWUNsFDD"
total_cost0.0571
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
94.44% Matches word count n/a
neededCleanfalse
sentences18
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1620
1710