Run: 2026-07-01-01KWEA51Z76W6Z192P708NECJH

Run Details

Duration:
10.5s
Cost:
$0.005380
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
0.06% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
# The Fog on Wexford Lane Rain hammered the cobblestones outside Wexford Manor, drumming a rhythm that matched Detective Sarah Cole's racing heart. She'd received the anonymous call an hour ago, warning her something terrible had happened. The manor's gates stood open, swinging slowly on rusted hinges that hadn't moved in years. Inside, candlelight flickered through grimy windows, casting long shadows across the overgrown garden. Cole parked her car and stepped out, boots sinking into the muddy gravel path. She pulled her coat tighter, bracing against the wind that howled through ancient oak trees. The front door hung ajar, creaking softly as if inviting her forward. She drew her flashlight, its beam cutting through darkness thick with dust and secrets. The foyer smelled of decay, old wood, and something faintly metallic beneath it all. Cole's light found the staircase first, then the crumpled figure at its base. Lord Edmund Wexford lay motionless, his silk robe stained crimson beneath the chandelier. His eyes stared upward, frozen in an expression of pure, unadulterated terror. Cole knelt beside him, checking for a pulse she already knew wasn't there. Behind her, floorboards creaked, and she spun around, flashlight raised defensively. No one appeared, yet the temperature seemed to drop several unsettling degrees instantly. Somewhere upstairs, a clock chimed midnight, echoing through the house's hollow, waiting silence. Cole realized then this case would haunt her for years to come.
created_at"2026-07-01T07:44:01.528Z" 7/1/2026, 7:44:01 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1904
moderation_latency94
generation_time10035
tokens_prompt46
tokens_completion379
native_tokens_prompt60
native_tokens_completion526
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.00538
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01TDuPwAAPHXzMqQfccBHpRg"
is_byokfalse
latency1904
model_permaslug"anthropic/claude-sonnet-5-20260630"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.17.0; linux; x64))"
http_referer(null)
request_id"req-1782891841-9xNtGIr2kszbqsnGSEms"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891841-ozf5dcLaVjbiECsfh5V0"
upstream_id"msg_01TDuPwAAPHXzMqQfccBHpRg"
total_cost0.00538
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
0.06% Matches word count n/a
neededCleanfalse
sentences18
wordCounts
06
117
214
315
413
514
615
712
814
914
1013
1113
1212
1313
1411
1513
1613
1712