Run: 2026-10-08-01M4DA6KDMBVAR8CJK24D2YR5Z

Run Details

Duration:
9.2s
Cost:
$0.001168
Provider:
Claude Platform on AWS

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 hard over Ashford Manor that cold night. Detective Inspector Clara Vance stepped slowly out of her car. Her flashlight trembled nervously across the muddy gravel driveway ahead. Lord Edmund Hale had been found dead in his study. A single gunshot had echoed through the silent sleeping house. Nobody in the household admitted hearing anything unusual that night. Clara knelt beside the body and studied the wound carefully. Something about the scene felt carefully arranged, almost theatrical somehow. The victim's glasses sat neatly folded beside his leather chair. Why would a dying man bother folding his glasses first? Clara wrote a quiet note while the storm rolled closer.
created_at"2026-10-08T08:31:12.316Z" 10/8/2026, 8:31:12 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9169
moderation_latency(null)
generation_time9169
tokens_prompt46
tokens_completion173
native_tokens_prompt62
native_tokens_completion2323
native_tokens_completion_images(null)
native_tokens_reasoning2085
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"
usage0.0011677
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448272-y9zP7P0XrsgptwAwFpCB"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448272-qsJWvy7ggfjCFTtzRmWA"
upstream_id"msg_011CfpTXYUWFnTjS8ob9ai1Z"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTXYUWFnTjS8ob9ai1Z"
is_byokfalse
latency740
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0011677
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

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