Run: 2026-04-24-01KPZV5CKN5FRK7SFK1YXE21TT

Run Details

Duration:
4.7s
Cost:
$0.007475
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
98.01% 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
Rain hammered the cobblestones outside the old Ashworth family estate. Detective Sarah Chen parked her sedan beside three other vehicles. The mansion loomed against the storm like a wounded beast. Yellow tape fluttered violently across the ornate front entrance doors. She ducked beneath it and nodded toward the waiting officer. "Victim is upstairs in the library," he said through chattering teeth. Sarah climbed the spiral staircase, her boots echoing on marble. The scent of copper and old books filled the hallway. Charles Ashworth lay sprawled across his desk, eyes wide open. A silver letter opener protruded from his starched white collar. Seven guests waited downstairs, each clutching secrets and trembling hands. One among them had committed murder within the past hour. Sarah pulled out her notebook and began planning her approach.
created_at"2026-04-24T13:34:12.61Z" 4/24/2026, 1:34:12 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1074
moderation_latency(null)
generation_time4606
tokens_prompt46
tokens_completion211
native_tokens_prompt65
native_tokens_completion286
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.007475
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"2113530e-6e96-4ead-9e32-36237d3fbaea"
is_byokfalse
latency1074
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-1777037652-TIRjkRuZmKTQz35zu3xx"
session_id(null)
api_type"completions"
id"gen-1777037652-UbUAdMb4VsTrykdUqI1s"
upstream_id"2113530e-6e96-4ead-9e32-36237d3fbaea"
total_cost0.007475
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
98.01% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
010
110
210
310
410
511
610
710
810
910
1010
1110
1210