Run: 2026-07-25-01KYCQZGJQ8G4R4HVTCQ807RKA

Run Details

Duration:
17.9s
Cost:
$0.040650
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 glass roof of Thornfield Hall's east conservatory. Inspector Maren Vale arrived at seven, twelve minutes after dawn. The body lay among orchids, arranged with unsettling, deliberate care. Someone had folded his hands across his chest like prayer. Sir Edmund Ashcombe, sixty-three, philanthropist, collector, and father of four. A single orchid bloom rested where his heart should beat. Maren crouched, studying the petals, white flecked with dried blood. The wound was small, precise, entered just below the ribs. No struggle, no defensive marks, no overturned pots or soil. He knew whoever killed him, and he trusted them completely. Behind her, the housekeeper wept into a starched linen napkin. Six family members waited in the drawing room, saying nothing. The doors had been locked from inside since eleven o'clock. Maren straightened slowly and pulled her damp coat closed tighter. Someone in this house had murdered a man they loved.
created_at"2026-07-25T13:38:34.719Z" 7/25/2026, 1:38:34 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5970
moderation_latency(null)
generation_time17839
tokens_prompt46
tokens_completion397
native_tokens_prompt60
native_tokens_completion1614
native_tokens_completion_images(null)
native_tokens_reasoning156
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"
usage0.04065
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsJLhUX2dn3ZTb1PCQT"
is_byokfalse
latency1907
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-1784986714-Pfy5nCjErholCmvMnBIW"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986714-JnScWtRH78tHtSyJPsoq"
upstream_id"msg_011CdNsJLhUX2dn3ZTb1PCQT"
total_cost0.04065
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
sentences15
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410