Run: 2026-07-01-01KWE9F32YKHRZ0TY9YGTVYKBR

Run Details

Duration:
14.9s
Cost:
$0.019160
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 fell hard against the old manor's grimy windows tonight. Detective Mara Hale stepped quietly inside, shaking off the cold. The old butler waited nervously near the grand marble staircase. Somewhere upstairs, a woman screamed once, then fell completely silent. Mara's hand instinctively reached for the pistol at her hip. The butler flinched slightly, gesturing toward the darkened east wing. Mara climbed the stairs slowly, each step creaking beneath her. At the top, she found a heavy door slightly open. Inside lay a woman, motionless upon the crimson-stained wool rug. Mara knelt beside her, already certain this meant murder tonight.
created_at"2026-07-01T07:32:01.771Z" 7/1/2026, 7:32:01 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3592
moderation_latency(null)
generation_time14914
tokens_prompt46
tokens_completion263
native_tokens_prompt60
native_tokens_completion1904
native_tokens_completion_images(null)
native_tokens_reasoning102
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"
usage0.01916
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01QBSZV8ERSWYCMGcgGE2DTG"
is_byokfalse
latency1552
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-1782891121-tfWGtEA40tXNuof1ulzx"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891121-mbpYsKOcPid10IE63eO8"
upstream_id"msg_01QBSZV8ERSWYCMGcgGE2DTG"
total_cost0.01916
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
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910