Run: 2026-07-25-01KYCPPP8SERCZ1RPZ71N4MXN3

Run Details

Duration:
11.6s
Cost:
$0.008150
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
95.64% 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
Rain hammered the slate roof. Inspector Naila Voss stepped inside. The hallway smelled of copper. Her boots left wet prints. Someone had drawn the curtains. A grandfather clock had stopped. The hands rested at three. Dust coated every polished surface. Except one chair, wiped clean. She noted that small detail. The body lay face down. His arm reached toward something. Nothing sat within his grasp. A wine glass stood untouched. The second glass was missing. Naila counted the four exits. Three were locked from inside. The fourth opened to rain. Footsteps approached from the study. A young woman appeared, trembling. She claimed to have screamed. Nobody in the house heard. Naila studied her dry sleeves. Outside, the storm had raged. The woman had arrived recently. Her story already had holes. "He was my uncle," she whispered. Naila wrote the word "uncle." Then she underlined it twice.
created_at"2026-07-25T13:16:17.055Z" 7/25/2026, 1:16:17 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5014
moderation_latency(null)
generation_time11522
tokens_prompt46
tokens_completion226
native_tokens_prompt60
native_tokens_completion314
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"
usage0.00815
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNqbmP2byvzhgpAf9yez"
is_byokfalse
latency5014
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-1784985377-Oo81aLzPJ46c75VUxldm"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784985377-bOagMYVIrNyzdmH9L4zu"
upstream_id"msg_011CdNqbmP2byvzhgpAf9yez"
total_cost0.00815
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
95.64% Matches word count n/a
neededCleanfalse
sentences28
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
245
255
266
2710