Run: 2026-07-25-01KYCRCSR8FBQ9CDHZVV9V9BMT

Run Details

Duration:
20.3s
Cost:
$0.046975
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
100.00% 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
Rain hammered the greenhouse roof like impatient fingers on glass. Detective Mara Voss stepped over the threshold and stopped breathing. The orchids had been arranged around him with obvious care. Nine white blooms, one for each finger he still had. Ambrose Whitlock, seventy-one, lay dressed for a formal dinner party. His dinner jacket was pressed, his shoes polished to mirrors. Someone had folded his hands across his chest like prayer. Mara crouched, knees protesting, and studied the dead man's face. He looked less surprised than a murdered man should look. Behind her, Constable Pike was trying not to be sick. The gardener found him at six, watering the tomato beds. Nobody else in the house admits hearing anything last night. Mara studied the glass walls, every one of them intact. The door had been locked from inside with a key. That key now sat in the dead man's jacket pocket. Somewhere in this house, someone was keeping the tenth flower. Rain kept falling, and the orchids kept their white silence.
created_at"2026-07-25T13:45:50.096Z" 7/25/2026, 1:45:50 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4330
moderation_latency(null)
generation_time20215
tokens_prompt46
tokens_completion425
native_tokens_prompt60
native_tokens_completion1867
native_tokens_completion_images(null)
native_tokens_reasoning171
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"
usage0.046975
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsrRrRYwBamZNxQ61TN"
is_byokfalse
latency1185
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-1784987150-PpZro95EYDEBACa0JXFM"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784987150-DXlrMn8i4Ymzy1Xxc8zy"
upstream_id"msg_011CdNsrRrRYwBamZNxQ61TN"
total_cost0.046975
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
100.00% Matches word count n/a
neededCleanfalse
sentences17
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1610