Run: 2026-04-24-01KQ0GAVBJ4MCD8NZCVMRWD2CB

Run Details

Duration:
8.2s
Cost:
$0.029975
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
Rain hammered the cobblestones outside the old Thornwood estate tonight. Detective Mara Voss arrived just before the clock struck midnight. A single yellow light burned in the second floor window. The front door stood open, swaying gently on rusted hinges. Inside, the butler waited with pale hands and trembling lips. He pointed silently toward the library at the hallway's end. Mara followed the scent of gunpowder through the darkened corridor. Lord Thornwood lay sprawled across his grandfather's antique Persian rug. A crimson stain bloomed outward beneath his crisp white shirt. Six guests remained upstairs, each hiding a dangerous, deadly secret. Mara drew her notebook and began writing the first name.
created_at"2026-04-24T19:44:11.638Z" 4/24/2026, 7:44:11 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2518
moderation_latency(null)
generation_time8072
tokens_prompt46
tokens_completion329
native_tokens_prompt65
native_tokens_completion1186
native_tokens_completion_images(null)
native_tokens_reasoning151
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"
usage0.029975
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"954fd4b3-20ba-4d27-9cbf-29a9cf40a079"
is_byokfalse
latency699
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-1777059851-8HWvbgiV8wiZjdHD5Sfk"
session_id(null)
api_type"completions"
id"gen-1777059851-0kIdDvzHwpA2s0MyBkGy"
upstream_id"954fd4b3-20ba-4d27-9cbf-29a9cf40a079"
total_cost0.029975
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
sentences11
wordCounts
010
110
210
310
410
510
610
710
810
910
1010