Run: 2026-03-06-01KK1GFHTT85KF3M51JNKFXBZ2

Run Details

Model:
GPT-5.4
Duration:
6.5s
Cost:
$0.002112
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
94.24% 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 slate eaves. Candles trembled inside, casting saints and sinners into wavering gold. Lady Wren stood smiling, though yesterday her husband vanished mysteriously. The clock struck nine when thunder swallowed the butler's scream. Guests rushed ballroomward, silk whispering panic across the checkerboard floor. There, beneath crystal chandeliers, Lord Wren lay impossibly, freshly dead. A silver dagger glittered between ribs no physician could explain. His widow touched pearls, then murmured, "Someone here loved him murderously." Outside, the storm locked gates while secrets breathed behind every door.
created_at"2026-03-06T12:03:12.867Z" 3/6/2026, 12:03:12 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency458
moderation_latency(null)
generation_time6419
tokens_prompt46
tokens_completion172
native_tokens_prompt41
native_tokens_completion134
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"
usage0.0021125
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_013b2e74b0b0837b0169aac280ebf48196ba03bba00109940c"
is_byokfalse
latency154
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-1772798592-ZTKgpeWeUwI6kNdgPCXz"
upstream_id"resp_013b2e74b0b0837b0169aac280ebf48196ba03bba00109940c"
total_cost0.0021125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
94.24% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
010
110
210
310
410
510
610
711
811