Run: 2026-03-18-01KM097RP0G84DBD6E7P0ANT64

Run Details

Model:
GPT-5.4 Mini
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
894ms
Cost:
$0.000400
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
95.58% 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 stitched the manor windows shut. Inside, candles trembled over portraits. Lord Hemlock lay beneath velvet. A silver dagger pinned silence. Guests stared, breathless, at him. Detective Vale arrived, eyes narrowing. Someone had locked every door. Footprints crossed the library carpet. Blood marked a single path. Then the clock stopped.
created_at"2026-03-18T10:53:05.102Z" 3/18/2026, 10:53:05 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency404
moderation_latency(null)
generation_time819
tokens_prompt46
tokens_completion97
native_tokens_prompt41
native_tokens_completion82
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"
usage0.00039975
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_058734e653a7f56d0169ba841127d08195921050913134a6e7"
is_byokfalse
latency207
model_permaslug"openai/gpt-5.4-mini-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-1773831185-VXlgIsxTB5cnxvhfl9YZ"
upstream_id"resp_058734e653a7f56d0169ba841127d08195921050913134a6e7"
total_cost0.00039975
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
95.58% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
06
15
25
35
45
55
65
75
85
94