Run: 2026-10-09-01M4G19SZP6XGGBGWQPDWFNVGW

Run Details

Duration:
2.8s
Cost:
$0.000157
Provider:
Claude Platform on AWS

Evaluation summary

Score Evaluator
Details Link
75.30% 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 against the windows of Hollow Manor. Detective Sarah Monroe arrived just after midnight. Lord Edmund Thorne lay motionless beside the cold fireplace. His study smelled faintly of bitter almonds and old tobacco. Three guests stood huddled in the hallway, whispering nervously. The butler, Harold Finch, wrung his trembling hands together. Sarah knelt beside the body and studied its frozen expression. A single crystal glass sat overturned upon the Persian rug. Its amber residue glittered under the flickering lamplight. Someone had locked the study door from the inside. Yet the window behind the desk stood wide open. Sarah noticed muddy footprints leading toward the garden path. Each print pointed away from the house, not toward it. She pulled out her notebook and began writing carefully. Tonight, every guest at Hollow Manor was a suspect.
created_at"2026-10-09T09:53:23.452Z" 10/9/2026, 9:53:23 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency736
moderation_latency(null)
generation_time2729
tokens_prompt46
tokens_completion217
native_tokens_prompt62
native_tokens_completion302
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"
usage0.0001572
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791539603-4FJLIPUvvW5XBuW7qmtH"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791539603-RaITJNo5dRg7OU4KXcJ0"
upstream_id"msg_011CfrTbxJazzKTMT9vfsqCi"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrTbxJazzKTMT9vfsqCi"
is_byokfalse
latency735
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0001572
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
75.30% Matches word count n/a
neededCleanfalse
sentences15
wordCounts
010
17
29
310
49
59
610
710
88
99
109
119
1210
139
149