Run: 2026-07-09-01KX4068ZNJ3GD1YR53E5SFRB2

Run Details

Duration:
9.4s
Cost:
$0.015567
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 guests arrived for dinner promptly. At midnight, the lights failed, swallowing laughter and music whole. When candles returned, Sir Alistair lay beneath the staircase dead. His silver watch ticked loudly near the bloodied marble floor. Detective Mara Venn, invited reluctantly, studied every shocked face carefully. Outside, thunder concealed the footsteps of someone leaving silently nearby. Inside, the butler whispered that every door remained locked afterward. Mara noticed muddy footprints ending precisely beside the victim there. Then Alistair's daughter smiled, though her gloves were wet strangely. She clasped a handkerchief embroidered with a crimson fox emblem. Across the hall, rainwater dripped from Colonel Vale's umbrella steadily. Mara remembered he claimed arriving before the storm began outside. Someone, therefore, had lied before the murder ever happened tonight.
created_at"2026-07-09T17:53:13.212Z" 7/9/2026, 5:53:13 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3346
moderation_latency(null)
generation_time9221
tokens_prompt46
tokens_completion553
native_tokens_prompt41
native_tokens_completion1031
native_tokens_completion_images0
native_tokens_reasoning839
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"
service_tier"default"
usage0.0155675
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_0652c1ee8b80e725016a4fe00946f081958af8f518d611f606"
is_byokfalse
latency217
model_permaslug"openai/gpt-5.6-terra-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783619593-aA5YxqfP7uyNcSsXJdib"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619593-8QOFrDuefspZzQ1RKsuK"
upstream_id"resp_0652c1ee8b80e725016a4fe00946f081958af8f518d611f606"
total_cost0.0155675
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210