Run: 2026-04-24-01KPZV8VX04EAJPW9XGB150THH

Run Details

Duration:
5.4s
Cost:
$0.006725
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 cobblestones outside the Blackwood Manor that night. Inspector Hale arrived just past midnight with his leather satchel. The butler greeted him with trembling hands and pale features. Inside the study, Lord Blackwood lay sprawled across his desk. A silver letter opener protruded from between his stiffened shoulders. Scattered papers formed a halo around his lifeless graying head. The fire crackled despite the hour being terribly late indeed. Hale noticed muddy footprints leading toward the tall bay window. Six guests remained trapped inside by the storm that evening. Each carried secrets heavier than the ancient manor itself held. Someone here had wanted the old lord dead for years. Hale removed his hat and began studying every small detail.
created_at"2026-04-24T13:36:06.573Z" 4/24/2026, 1:36:06 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1181
moderation_latency(null)
generation_time5345
tokens_prompt46
tokens_completion193
native_tokens_prompt65
native_tokens_completion256
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"
usage0.006725
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"72e6ddee-3716-48b1-8719-bd1bec6b938f"
is_byokfalse
latency1173
model_permaslug"anthropic/claude-4.7-opus-20260416"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777037766-S2o3XFXvulNWDYvgiSiF"
session_id(null)
api_type"completions"
id"gen-1777037766-uaydVi2nccRvFel9jVxo"
upstream_id"72e6ddee-3716-48b1-8719-bd1bec6b938f"
total_cost0.006725
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110