Run: 2026-07-09-01KX4115MDAF4Z2433METBW43D

Run Details

Duration:
4.3s
Cost:
$0.002247
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
79.27% 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 hammered Blackthorn Manor as guests gathered for dinner. Detective Mara Vale arrived late, carrying an unopened invitation. Inside, candlelight trembled across portraits with watchful, familiar eyes. Lord Blackthorn smiled warmly, though nobody returned his greeting. At midnight, thunder silenced the orchestra beneath the ballroom. Then a scream rose sharply from the locked library upstairs. Guests rushed upward, finding Blackthorn sprawled beside his desk. A silver knife gleamed between scattered letters and broken glass. Mara knelt beside him, noticing mud beneath his fingernails. Outside, the storm erased every footprint leading from manor.
created_at"2026-07-09T18:07:54.79Z" 7/9/2026, 6:07:54 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency637
moderation_latency(null)
generation_time3758
tokens_prompt46
tokens_completion176
native_tokens_prompt41
native_tokens_completion143
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.0022475
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_0072240d26ecebae016a4fe37adc1c8194a8af5a4a77ad46ce"
is_byokfalse
latency243
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-1783620474-JzIr4Hwu28kguN83DPH1"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620474-kELyQK6nA8ZlyZpdJtKf"
upstream_id"resp_0072240d26ecebae016a4fe37adc1c8194a8af5a4a77ad46ce"
total_cost0.0022475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
79.27% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
09
19
29
39
49
510
69
710
89
99