Run: 2026-03-06-01KK1JD8T7B1BWRR2VGQRFMBNX

Run Details

Model:
GPT-5.4
Duration:
4.4s
Cost:
$0.002037
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
84.45% 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 hammered Blackthorn Hall as mourners gathered beneath cracked gargoyles. Lady Wren arrived last, wearing pearls and an unreadable smile. Inside, candles trembled around portraits with eyes too knowing. The clock struck nine, and every servant flinched simultaneously. A scream split dinner's hush from somewhere beyond the library. When they entered, Lord Ashcombe lay dead beside chessmen. One white king rested in his open palm, bloodied. No window stood open, yet autumn leaves covered carpets. Detective Vale removed his gloves and studied each shocked face. Then thunder answered softly, as though the house approved.
created_at"2026-03-06T12:36:55.247Z" 3/6/2026, 12:36:55 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency384
moderation_latency(null)
generation_time4361
tokens_prompt46
tokens_completion164
native_tokens_prompt41
native_tokens_completion129
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.0020375
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0bd47393f8c49aa40169aaca6750108197a998de1f91a7a9e6"
is_byokfalse
latency162
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-1772800615-w9k6WIk2gCvbaqziaCbd"
upstream_id"resp_0bd47393f8c49aa40169aaca6750108197a998de1f91a7a9e6"
total_cost0.0020375
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
84.45% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
29
39
410
59
69
79
810
99