Run: 2026-10-08-01M4DA70HM1AZC7Q880R05BZ05

Run Details

Duration:
9.1s
Cost:
$0.001146
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 cold rain fell hard on Ashford Manor that night. Detective Mara Quill arrived just after midnight, soaked and silent. Lord Edmund Harrington lay sprawled motionless across his study floor. A bloodied silver letter opener protruded from his left chest. Three guests stood in the doorway, faces pale with terror. Nobody in that room dared to speak or even move. Mara knelt beside the body and studied the scene carefully. The study door had been firmly locked from the inside. Yet the tall window beside the desk hung wide open. Mud stained the windowsill, and a single glove lay below. Slowly, Mara lifted her gaze toward the three gathered suspects. Someone in this house was a murderer, and a liar. Her first question was simple: who had turned the key? Nobody answered, and only the old grandfather clock ticked on.
created_at"2026-10-08T08:31:25.756Z" 10/8/2026, 8:31:25 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9036
moderation_latency(null)
generation_time9036
tokens_prompt46
tokens_completion209
native_tokens_prompt62
native_tokens_completion2280
native_tokens_completion_images(null)
native_tokens_reasoning1985
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"
usage0.0011462
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448285-39tmqnfMCixOuF45o85Q"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448285-gBoIIo1CHLj4WhC3u3QU"
upstream_id"msg_011CfpTYY2Vn55P61VH3Aurt"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTYY2Vn55P61VH3Aurt"
is_byokfalse
latency739
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0011462
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
sentences14
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310