Run: 2026-07-01-01KWE9P42GNERM31TAFBBQ8RCJ

Run Details

Duration:
38.1s
Cost:
$0.054960
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 hammered relentlessly against the old manor's tall windows while lightning split the darkened sky above the distant, silent hills. Detective Sarah Voss stepped carefully out of her old car, collar raised high against the storm's biting, cold wind tonight. Two uniformed officers waited silently beneath the old porch light, their young faces betraying quiet, unmistakable dread and fear tonight. Inside, the victim lay sprawled across the cold marble floor, motionless beneath the grand, old, looming staircase's dark, silent shadow. Voss knelt slowly beside him, recognizing that pale, familiar face immediately despite all the years that had passed between them. This was certainly no ordinary murder case tonight; the dead man was truly her own former partner, Detective David Reyes.
created_at"2026-07-01T07:35:52.155Z" 7/1/2026, 7:35:52 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3885
moderation_latency141
generation_time37886
tokens_prompt46
tokens_completion670
native_tokens_prompt60
native_tokens_completion5484
native_tokens_completion_images(null)
native_tokens_reasoning472
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"
usage0.05496
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_011iZdLCnQqs4SsPkSUpoSbR"
is_byokfalse
latency1948
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-1782891352-Hh7ylRy68zka9TqzJnjo"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891352-mfpPjxFjwFK89Pxr5T45"
upstream_id"msg_011iZdLCnQqs4SsPkSUpoSbR"
total_cost0.05496
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
sentences6
wordCounts
020
120
220
320
420
520