Run: 2026-10-08-01M4DZHQ3Z13GQGYPFAA6ZXP0K

Run Details

Duration:
3.2s
Cost:
$0.000136
Provider:
Claude Platform on AWS

Evaluation summary

Score Evaluator
Details Link
43.38% 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 tonight. Detective Mara Holt arrived just after midnight. Her flashlight cut across the wet gravel driveway. Officers had already roped off the eastern garden gate. Nobody had touched the body near the fountain. Lord Edwin Thorne lay face down in shallow water. A silver letter opener protruded from his back. Mara knelt beside him and studied the scene. The victim's pocket watch had stopped at eleven. Someone had wound the clock on his mantel. Her partner, Sergeant Dunleavy, approached with a muddy notebook. "Three guests claim they never left the house," he said. Mara glanced up at the lit windows above. One figure stood motionless behind the glass. It was watching her, and it did not blink.
created_at"2026-10-08T14:44:16.651Z" 10/8/2026, 2:44:16 PM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3134
moderation_latency(null)
generation_time3135
tokens_prompt46
tokens_completion184
native_tokens_prompt62
native_tokens_completion260
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"
usage0.0001362
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791470656-luNvwYAZzsmKbbkc50Mb"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791470656-wgXyrHmRYTI72RwR4hsf"
upstream_id"msg_011CfpwybZ2vZS4bQDnBz1Wr"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpwybZ2vZS4bQDnBz1Wr"
is_byokfalse
latency1199
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0001362
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
43.38% Matches word count n/a
neededCleanfalse
sentences15
wordCounts
08
17
28
39
48
59
68
78
88
98
109
1110
128
137
149