Run: 2026-07-09-01KX4119M9XKSWWK4CBGT1FMH0

Run Details

Model:
GPT-5.6 Terra
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
6.5s
Cost:
$0.001948
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
83.80% 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 Venn arrived late, carrying nobody's invitation inside. The butler smiled nervously, then noticed blood beneath her gloves. "Someone died," Mara said, surveying portraits with unblinking gray eyes. Lightning revealed twelve faces around the candlelit dining table silently. Their host, Augustus Vale, slumped beside untouched silverware, pale. A pearl-handled knife protruded neatly from his embroidered waistcoat. Nobody screamed until the grandfather clock struck midnight downstairs.
created_at"2026-07-09T18:07:58.607Z" 7/9/2026, 6:07:58 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1090
moderation_latency(null)
generation_time6381
tokens_prompt46
tokens_completion150
native_tokens_prompt41
native_tokens_completion123
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"
usage0.0019475
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_013d7a94ab7b007a016a4fe37eadc48195a9ac1d0d45adb617"
is_byokfalse
latency197
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-1783620478-gv6RSoAKCOUFP72bs7OU"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620478-xYTcafqqyrpuB3e1kE9u"
upstream_id"resp_013d7a94ab7b007a016a4fe37eadc48195a9ac1d0d45adb617"
total_cost0.0019475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
83.80% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
09
19
210
310
410
59
69
79