Run: 2026-03-09-01KKABVYETDXVB49BMXTCKTV51

Run Details

Duration:
10.4s
Cost:
$0.008233
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain polished Blackthorn Manor while mourners whispered beneath dripping eaves. Inside, the grandfather clock struck midnight, then stopped with finality. Lady Harrow smiled faintly, raising champagne before darkness swallowed everything. When candles returned, her glass glittered red across the linen. No one screamed first; silence accused each stunned face equally. The locked dining room held seven guests and countless secrets. Somewhere upstairs, a music box began playing a children's waltz. Detective Vale arrived minutes later, carrying rainwater, patience, and suspicion.
created_at"2026-03-09T22:35:46.237Z" 3/9/2026, 10:35:46 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9859
moderation_latency(null)
generation_time9937
tokens_prompt46
tokens_completion457
native_tokens_prompt41
native_tokens_completion542
native_tokens_completion_images0
native_tokens_reasoning427
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"
usage0.0082325
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_04e5e6f91410fa4b0169af4b42699c8196a6095a4345a1bf04"
is_byokfalse
latency292
model_permaslug"openai/gpt-5.4-20260305"
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-1773095746-a5qoJJD3ID7bI2krmCht"
upstream_id"resp_04e5e6f91410fa4b0169af4b42699c8196a6095a4345a1bf04"
total_cost0.0082325
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
010
110
210
310
410
510
610
710