Run: 2026-03-18-01KM08R1E6GN7A9E70FAFYHT5W

Run Details

Duration:
6.2s
Cost:
$0.000749
Provider:
OpenAI

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 smeared windows of Bellmoor. Detective Lark arrived before dawn. A body lay under stairs. Victim wore crimson tie, lifeless. Candles flickered; power remained dead. Mara Quill, maid, whispered tremblingly. She claimed doors stayed locked. But a window stood ajar. Lark inspected footprints in ash. Somewhere, a clock ticked ominously.
created_at"2026-03-18T10:44:29.78Z" 3/18/2026, 10:44:29 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5903
moderation_latency(null)
generation_time6060
tokens_prompt46
tokens_completion369
native_tokens_prompt41
native_tokens_completion593
native_tokens_completion_images0
native_tokens_reasoning497
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.00074945
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_05c88d0ff14f8f050169ba820dd58c8196a9d2a062eb63695e"
is_byokfalse
latency176
model_permaslug"openai/gpt-5.4-nano-20260317"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773830669-chI2JaI4XYWfJYzN8jvY"
upstream_id"resp_05c88d0ff14f8f050169ba820dd58c8196a9d2a062eb63695e"
total_cost0.00074945
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
35
45
55
65
75
85
95