Run: 2026-07-09-01KX40MSZJENK8X0R1CSN41TW2

Run Details

Duration:
10.5s
Cost:
$0.021642
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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain worried the windows of Blackthorn Manor as Inspector Vale arrived, summoned by a voice that vanished before identifying itself. Inside, twelve guests stood silent beneath the chandelier, watching a silver dinner bell tremble beside the untouched crimson Persian carpet. Lord Blackthorn lay facedown beside the fireplace, one gloved hand clutching a torn photograph showing every guest in the room. His wife whispered that nobody had left, although Vale noticed muddy footprints leading from the corpse toward the locked conservatory. Then the bell rang again, and every guest turned toward the hallway where a child laughed softly behind them all. Vale drew his revolver, wondering which frightened face belonged to the murderer, and which belonged to the victim's terrified accomplice. On the mantel, a clock stopped at midnight, though Vale's watch insisted the stormy evening had only begun minutes ago. Somewhere above, floorboards creaked, followed by a woman's scream, abruptly cut short when the mansion lost all its lights entirely.
created_at"2026-07-09T18:01:09.375Z" 7/9/2026, 6:01:09 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2920
moderation_latency(null)
generation_time10349
tokens_prompt46
tokens_completion712
native_tokens_prompt41
native_tokens_completion1436
native_tokens_completion_images0
native_tokens_reasoning1234
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"
usage0.0216425
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_0d813dc67ea787ad016a4fe1e57c408190aeae343c763e435f"
is_byokfalse
latency265
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-1783620069-86zRulKm6dE2w5A7TPEA"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620069-aKmMxKrRqQGj1OLggQDv"
upstream_id"resp_0d813dc67ea787ad016a4fe1e57c408190aeae343c763e435f"
total_cost0.0216425
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
sentences8
wordCounts
020
120
220
320
420
520
620
720