Run: 2026-10-08-01M4DA7Z6M8818R134WRAY69JC

Run Details

Duration:
7.3s
Cost:
$0.000939
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 on Ashford Manor that November night. Inspector Thomas Greaves stood alone beneath the dripping oak trees. Somewhere deep inside, a clock struck midnight with terrible finality. Lady Eleanor Ashford had been found dead in her study. Greaves pushed open the heavy oak door and stepped inside. The room smelled of brandy, candle wax, and something sharper. Her body slumped over the mahogany desk, one hand outstretched. A silver letter opener lay gleaming beside her open palm. Nothing in the room appeared disturbed, except for one detail. The window behind her hung open, admitting the freezing storm. Yet the rug beneath the window was perfectly, impossibly dry. Greaves knelt down, sensing this case would never be simple.
created_at"2026-10-08T08:31:57.177Z" 10/8/2026, 8:31:57 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7252
moderation_latency(null)
generation_time7253
tokens_prompt46
tokens_completion186
native_tokens_prompt62
native_tokens_completion1866
native_tokens_completion_images(null)
native_tokens_reasoning1601
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"
usage0.0009392
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448317-tS1dAYzjDsowhtdRCJKd"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448317-TQVaQkybGbuUKOIrQovS"
upstream_id"msg_011CfpTarTa9xEHeTVz5BGKB"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTarTa9xEHeTVz5BGKB"
is_byokfalse
latency771
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0009392
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
sentences12
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110