Run: 2026-03-09-01KKABWJ2NS3VRV6D4YHC0B75B

Run Details

Model:
GPT-5.4 (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
7.6s
Cost:
$0.004933
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 worried the mansion windows. Guests whispered beneath chandelier shadows. Lady Harroway smiled too brightly. The clock swallowed midnight whole. Then came the library scream. We found Sir Alistair prone. Blood jeweled his collar studs. A teacup trembled beside him. No window stood remotely open. Someone inside had stayed silent.
created_at"2026-03-09T22:36:06.111Z" 3/9/2026, 10:36:06 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7375
moderation_latency(null)
generation_time7428
tokens_prompt46
tokens_completion221
native_tokens_prompt41
native_tokens_completion322
native_tokens_completion_images0
native_tokens_reasoning239
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"
usage0.0049325
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_038b102ffb192d110169af4b563ae0819580704d7b88fc251b"
is_byokfalse
latency270
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-1773095766-3bLigAk5nGImh80lA3sP"
upstream_id"resp_038b102ffb192d110169af4b563ae0819580704d7b88fc251b"
total_cost0.0049325
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