Run: 2026-07-25-01KYCR3FHJY4M5C86KV1863MQM

Run Details

Duration:
18.1s
Cost:
$0.040025
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 windows of Ashcroft Manor all night long. Inspector Vale arrived at dawn, coat soaked, patience already thin. The butler waited beneath the portico, holding a black umbrella. He said nothing useful, only pointed toward the library door. Inside, Lord Ashcroft lay facedown across a Persian rug, dead. A silver letter opener protruded from between his shoulder blades. No blood stained the carpet, which struck Vale as odd. Someone had moved the body here after the killing occurred. Three cups of cold tea sat waiting on the desk. Only one bore lipstick, faint coral, pressed against the rim. Above the fireplace, a stopped clock read exactly four o'clock. Vale checked his pocket watch and frowned at the discrepancy. Behind him, footsteps halted abruptly in the corridor's deep shadow. He turned slowly, and the whole house held its breath.
created_at"2026-07-25T13:40:44.729Z" 7/25/2026, 1:40:44 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4862
moderation_latency(null)
generation_time17981
tokens_prompt46
tokens_completion400
native_tokens_prompt60
native_tokens_completion1589
native_tokens_completion_images(null)
native_tokens_reasoning185
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"
usage0.040025
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsTwbChqUujr3dSgHrB"
is_byokfalse
latency2140
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-1784986844-tUUVQ6R14J8A72B4YoCO"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986844-u2Mqpc19P5BYJg6rSA8c"
upstream_id"msg_011CdNsTwbChqUujr3dSgHrB"
total_cost0.040025
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
sentences14
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310