Run: 2026-04-24-01KQ0GB58478CNBXW788N76DYB

Run Details

Duration:
8.7s
Cost:
$0.029725
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 fell heavily on the cobblestones that October evening. Detective Harlow arrived at the old manor just past midnight. Yellow tape stretched across the tall wrought-iron front entrance gate. Inside, the body of Lord Ashcroft lay by the fireplace. A silver letter opener protruded from his crisp white shirt. Blood pooled beneath him, soaking the expensive Persian wool rug. Six guests huddled together silently in the dimly lit parlor. Each one of them had reason to want him dead. Harlow studied their pale faces with his sharp gray eyes. Someone in this room, he knew, was certainly the murderer.
created_at"2026-04-24T19:44:21.77Z" 4/24/2026, 7:44:21 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2386
moderation_latency(null)
generation_time8602
tokens_prompt46
tokens_completion252
native_tokens_prompt65
native_tokens_completion1176
native_tokens_completion_images(null)
native_tokens_reasoning100
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"
usage0.029725
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"29481fa7-eb29-46a4-8ab0-b49d8a2fb23c"
is_byokfalse
latency965
model_permaslug"anthropic/claude-4.7-opus-20260416"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777059861-VJOd5y3cU3dcU8SseqjH"
session_id(null)
api_type"completions"
id"gen-1777059861-ObuJA14SoHC0wCFVwsds"
upstream_id"29481fa7-eb29-46a4-8ab0-b49d8a2fb23c"
total_cost0.029725
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

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