Run: 2026-04-24-01KQ0NA7FQQKW59EWV7YJRD1TD

Run Details

Duration:
10.3s
Cost:
$0.017185
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 silvered the manor windows. Inside, twelve guests awaited dinner. Sir Alistair carved the pheasant. Then every candle guttered out. A scream split the darkness. When matches flared, Alistair lay. Blood darkened his white waistcoat. The carving knife had vanished. Nobody admitted leaving their chair. Inspector Vale arrived before midnight. He noticed mudless boots drying. Beside them, roses smelled bitter.
created_at"2026-04-24T21:11:14.175Z" 4/24/2026, 9:11:14 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9942
moderation_latency(null)
generation_time10047
tokens_prompt46
tokens_completion241
native_tokens_prompt41
native_tokens_completion566
native_tokens_completion_images0
native_tokens_reasoning473
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.017185
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0f709e9afa686f090169ebdc723f208194adffc1122e34dc4c"
is_byokfalse
latency262
model_permaslug"openai/gpt-5.5-20260423"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777065074-vqt5GN6Y4GGN58SczsbR"
session_id(null)
api_type"completions"
id"gen-1777065074-B3eOpu2SmqzSYdCFlgN9"
upstream_id"resp_0f709e9afa686f090169ebdc723f208194adffc1122e34dc4c"
total_cost0.017185
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115