Run: 2026-07-09-01KX40WJ3YCGSRVSRD06G310FS

Run Details

Model:
GPT-5.6 Terra
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.3s
Cost:
$0.001752
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
33.99% 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
At midnight, rain battered Blackthorn Manor while guests whispered beneath chandeliers and thunder prowled across the moors outside. Detective Elian Voss arrived late, carrying no umbrella, only a silver watch stopped precisely at eleven forty-seven. Inside, Lady Marroway lay dead beside the fireplace, her ruby necklace missing, her teacup shattered beneath one pale hand. Seven witnesses watched Voss remove his gloves, yet nobody noticed the muddy footprints leading upstairs toward the locked nursery.
created_at"2026-07-09T18:05:23.462Z" 7/9/2026, 6:05:23 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency590
moderation_latency(null)
generation_time2141
tokens_prompt46
tokens_completion131
native_tokens_prompt41
native_tokens_completion110
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"
usage0.0017525
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_0bdd1c4e92294e20016a4fe2e387508193a797cb11700606ca"
is_byokfalse
latency195
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-1783620323-UBpxpXnjK93VZyiBDney"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620323-1wJkiuP97YfHhywoP2kb"
upstream_id"resp_0bdd1c4e92294e20016a4fe2e387508193a797cb11700606ca"
total_cost0.0017525
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
33.99% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
018
117
219
319