Run: 2026-03-06-01KK1GFFCQG5S3N1SKJ7GKWDN5

Run Details

Model:
GPT-5.4
Duration:
5.4s
Cost:
$0.002308
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain lashed Blackthorn Manor as mourners gathered beneath iron eaves. Inside, candlelight trembled across portraits with accusing, ancestral, watchful eyes. The clock struck midnight just as Evelyn Harrow screamed downstairs. Guests froze, teacups suspended, while thunder muffled the shattering glass. By the library hearth, Colonel Pembroke lay twisted unnaturally, dead. A silver letter opener protruded cleanly from his velvet waistcoat. No window stood open, and every door had been bolted. Yet mud glistened freshly across the Persian rug beside him. Mrs. Wren whispered prayers while Doctor Vale checked for pulse. From the gallery above, someone laughed once, then fell silent.
created_at"2026-03-06T12:03:10.368Z" 3/6/2026, 12:03:10 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency434
moderation_latency(null)
generation_time5303
tokens_prompt46
tokens_completion178
native_tokens_prompt41
native_tokens_completion147
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"
usage0.0023075
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0ac717c91e0f49100169aac27e6fac819584b0654fc5331840"
is_byokfalse
latency184
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-1772798590-x08nv6OXBCUillhDSQa6"
upstream_id"resp_0ac717c91e0f49100169aac27e6fac819584b0654fc5331840"
total_cost0.0023075
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
010
110
210
310
410
510
610
710
810
910