Run: 2026-10-09-01M4FY0385ZJWAMQPS67GGPMT2

Run Details

Duration:
8.0s
Cost:
$0.000700
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain lashed the old windows. Detective Reyes arrived at midnight. The body lay beneath stairs. Blood pooled beside the victim. Lord Ashford had been poisoned. Nobody in the house slept. Every guest claimed innocence loudly. Reyes studied each face carefully. The butler stared, visibly trembling. Something glinted under the cabinet. Reyes knelt and reached inside. Her fingers found cold metal. A small silver key emerged. Engraved letters spelled a name. It read: Margaret, forgive me. Footsteps echoed on the landing. Reyes slipped the key away. The case had just begun.
created_at"2026-10-09T08:55:39.532Z" 10/9/2026, 8:55:39 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2474
moderation_latency(null)
generation_time7911
tokens_prompt46
tokens_completion327
native_tokens_prompt62
native_tokens_completion1387
native_tokens_completion_images(null)
native_tokens_reasoning1155
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"
usage0.0006997
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791536139-22HYQpoJqOeZhcXpE2oO"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791536139-9xqlRRjbqikvbYRPlVi1"
upstream_id"msg_011CfrPCdNCaQcxFkEBE3bT4"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrPCdNCaQcxFkEBE3bT4"
is_byokfalse
latency833
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0006997
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
sentences18
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175