Run: 2026-07-01-01KWE9NRZS4GYE6ZVC6M6GE8V6

Run Details

Duration:
5.7s
Cost:
$0.002470
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
87.83% 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 Body in the Library Rain hammered against the tall windows. Margaret found him at midnight. Blood pooled beneath the old desk. She dropped her candle, screaming loudly. The butler came running down quickly. "Call the police," she whispered. Nobody moved for several minutes. The clock struck twelve times slowly. Outside, thunder cracked like gunfire. Someone had locked all the doors. The killer was still inside. Detective Hayes arrived within the hour. He studied the room in silence. "This wasn't random," he muttered. Every guest became a suspect. The mansion held its breath tightly. Secrets lurked behind every corner. Someone here knew the truth. The game had only just begun.
created_at"2026-07-01T07:35:40.805Z" 7/1/2026, 7:35:40 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1902
moderation_latency(null)
generation_time5696
tokens_prompt46
tokens_completion175
native_tokens_prompt60
native_tokens_completion235
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"
usage0.00247
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01J7h5Q2JUeGGQeWbhN7YmsY"
is_byokfalse
latency1902
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-1782891340-4zaXeUV5HSsVYDfMpVsV"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891340-0PEEaMoStu69d4IIVe0q"
upstream_id"msg_01J7h5Q2JUeGGQeWbhN7YmsY"
total_cost0.00247
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
87.83% Matches word count n/a
neededCleanfalse
sentences20
wordCounts
06
16
25
36
46
56
65
75
86
95
106
115
126
136
145
155
166
175
185
196