Run: 2026-07-25-01KYCR0AZ1RYYSHHR4ZAFX0MKZ

Run Details

Duration:
20.2s
Cost:
$0.044175
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
The rain had stopped, but the gutters still ran black. Inspector Maren Vosk arrived at the lighthouse just past midnight. A young constable waited by the gate, holding a lantern. His face was the color of wet newspaper left outside. "Nobody has touched anything, ma'am," he said, voice barely steady. She nodded once and stepped over the threshold without speaking. The keeper's parlor smelled of lamp oil, salt, and copper. Edmund Grail lay face down beneath the stopped grandfather clock. Someone had arranged his arms carefully, like a sleeping child. That detail bothered Vosk more than the wound itself did. Murder is usually rushed; tenderness afterward means something else entirely. Above them, the great lamp turned, throwing light, then darkness. She crouched, studying the flour dusted across the wooden floorboards. Three sets of footprints crossed it, and one came back. Outside, the sea went on keeping its own dark secrets. Vosk stood slowly and asked who had found the body.
created_at"2026-07-25T13:39:01.74Z" 7/25/2026, 1:39:01 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5335
moderation_latency(null)
generation_time20053
tokens_prompt46
tokens_completion421
native_tokens_prompt60
native_tokens_completion1755
native_tokens_completion_images(null)
native_tokens_reasoning173
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"
usage0.044175
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsLLbpqyh77UzSWDyUN"
is_byokfalse
latency1979
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-1784986741-6vhBUCh5L1jzxh16HHiF"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986741-nVFg4HEcwb4Db8zSWPTS"
upstream_id"msg_011CdNsLLbpqyh77UzSWDyUN"
total_cost0.044175
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
sentences16
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510