Run: 2026-07-25-01KYCRDERMXDNP26FNCEEC4B8K

Run Details

Duration:
29.7s
Cost:
$0.071775
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 washed the garden path completely clean again. Inspector Marlowe noticed this detail before she noticed the body. The man lay face down among the crushed white peonies. His right hand still gripped a heavy tarnished brass key. Nobody in the house would admit knowing what it opened. Three witnesses waited inside, and each was lying about something. Marlowe knelt down slowly and studied the dead man's face. She had seen this same man yesterday, buying flowers downtown. He had smiled at her and asked about the weather. Now his blood was mixing with rainwater in the gravel. Above her a curtain moved in an upstairs bedroom window. Marlowe did not look up, but she carefully noted it. Someone was watching her work and counting every small mistake. Then the rain began falling again, much harder than before. Whatever evidence remained outside would be gone within ten minutes.
created_at"2026-07-25T13:46:11.612Z" 7/25/2026, 1:46:11 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3911
moderation_latency(null)
generation_time29590
tokens_prompt46
tokens_completion633
native_tokens_prompt60
native_tokens_completion2859
native_tokens_completion_images(null)
native_tokens_reasoning410
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"
usage0.071775
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNst1z3NjtjWhiroNXWY"
is_byokfalse
latency1243
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-1784987171-FeWATy9jCEEDslfTeJKW"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784987171-IO4W7a3XjbDAd83qnGuM"
upstream_id"msg_011CdNst1z3NjtjWhiroNXWY"
total_cost0.071775
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
sentences15
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410