Run: 2026-07-01-01KWE91AFN17ZQ0PBP2VFAREW9

Run Details

Duration:
5.5s
Cost:
$0.002390
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
74.88% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
# The Opening Scene Rain fell hard on Blackwood Manor. Lightning cracked across the dark sky. Inside, the guests gathered nervously. Someone had locked all the doors. The lights flickered, then went out completely. A scream echoed through the hallway. Detective Marsh rushed up the stairs. He found the study door open. Blood pooled beneath the oak desk. The victim lay face-down, motionless, cold. His pocket watch had stopped ticking. Nobody had heard the fatal shot. The killer walked among the guests. Marsh knew someone here was lying. The storm outside grew even worse. No one could leave the manor. The investigation had only just begun.
created_at"2026-07-01T07:24:30.59Z" 7/1/2026, 7:24:30 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1472
moderation_latency(null)
generation_time5430
tokens_prompt46
tokens_completion163
native_tokens_prompt60
native_tokens_completion227
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"
usage0.00239
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01Vi1SsRTbaob58utP9qgPnk"
is_byokfalse
latency1472
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-1782890670-5RzkAoBLeGd2C3wdetyM"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890670-dzRXUDa0tFigqf6ep7sc"
upstream_id"msg_01Vi1SsRTbaob58utP9qgPnk"
total_cost0.00239
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
74.88% Matches word count n/a
neededCleanfalse
sentences18
wordCounts
04
16
26
35
46
57
66
76
86
96
106
116
126
136
146
156
166
176