Run: 2026-10-08-01M4D9ZDQ631WPWWDQ6KZD3FKS

Run Details

Duration:
8.5s
Cost:
$0.001056
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 stormy night. Detective Mara Quill stepped slowly from her muddy old car. Inside, the long hallway smelled faintly of smoke and lilies. Victor Ashford lay motionless beside the grand winding marble staircase. A single bloodied silver letter opener protruded from his chest. Nobody in the sprawling household had heard a single scream. Mara knelt beside the body and studied the wound carefully. Something about that angle seemed almost unnervingly deliberate and theatrical. Behind her, the antique clock in the study chimed twelve. Midnight, she quietly realized, was precisely when Victor had died.
created_at"2026-10-08T08:27:17.101Z" 10/8/2026, 8:27:17 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7998
moderation_latency(null)
generation_time8448
tokens_prompt46
tokens_completion161
native_tokens_prompt62
native_tokens_completion2099
native_tokens_completion_images(null)
native_tokens_reasoning1876
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"
usage0.0010557
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448037-Tlbh3OPKCnkKArytPW7o"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448037-h6SahWPLOQclzEne2YfI"
upstream_id"msg_011CfpTED3yh1BrjjjYs6xwg"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTED3yh1BrjjjYs6xwg"
is_byokfalse
latency643
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0010557
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
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910