Run: 2026-10-09-01M4FYFJHKAPCT2A95KKDB415E

Run Details

Duration:
2.3s
Cost:
$0.000119
Provider:
Claude Platform on AWS

Evaluation summary

Score Evaluator
Details Link
65.46% 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 had not stopped for three days straight now. Detective Marlowe stepped carefully over the wet cobblestones outside. Yellow tape fluttered violently against the iron gate ahead. Nobody in the village had slept properly since Tuesday. Inspector Hale greeted him at the doorway with grim silence. Blood stained the polished oak floor of the study. The victim lay face down beside an overturned chair. A single brass key glinted near the fireplace. Marlowe knelt slowly and studied the dead man's hands. His fingers were curled tightly around a folded letter. Someone had wanted this message found quickly. Marlowe pocketed his gloves and began to speak.
created_at"2026-10-09T09:04:06.713Z" 10/9/2026, 9:04:06 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency677
moderation_latency(null)
generation_time2252
tokens_prompt46
tokens_completion165
native_tokens_prompt62
native_tokens_completion225
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"
service_tier"default"
usage0.0001187
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791536646-n3BvDT5CQpz7pq3L0Y4N"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791536646-V8EIwOOqK5e9IyXYmymz"
upstream_id"msg_011CfrPqzv2YjDy1UN4x5xLV"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrPqzv2YjDy1UN4x5xLV"
is_byokfalse
latency677
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0001187
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
65.46% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
010
19
29
39
410
59
69
78
89
99
107
118