Run: 2026-07-01-01KWE9H1SAHB696KF9Q346BTE5

Run Details

Duration:
30.3s
Cost:
$0.041470
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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain fell steadily over the old mansion, soaking the gravel path that curved slowly toward the grand front doorway tonight. Detective Mara Voss knelt slowly beside the lifeless body, studying the pale, cold face illuminated by her trembling flashlight beam. The victim, a wealthy banker, lay sprawled across the Persian rug, blood pooling slowly beneath his cold, motionless, silent head. No weapon lay anywhere nearby, only scattered papers and a single, overturned, empty crystal glass beside the crackling fireplace tonight. Mara exhaled sharply, sensing this strange, dark case would soon unravel secrets hidden deep within this grand, old, forgotten house.
created_at"2026-07-01T07:33:05.971Z" 7/1/2026, 7:33:05 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3944
moderation_latency(null)
generation_time30307
tokens_prompt46
tokens_completion491
native_tokens_prompt60
native_tokens_completion4135
native_tokens_completion_images(null)
native_tokens_reasoning325
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"
usage0.04147
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01Le7NrqTKY3xdC3eFcmwg6i"
is_byokfalse
latency1745
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-1782891185-h5abof1mTL9FDYo48Ise"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891185-79NjR9FOzZhqZx7EMKfV"
upstream_id"msg_01Le7NrqTKY3xdC3eFcmwg6i"
total_cost0.04147
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
sentences5
wordCounts
020
120
220
320
420