Run: 2026-07-09-01KX41MG2Z2XM6YWM8YZB8J618

Run Details

Model:
GPT-5.6 Terra (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
20.9s
Cost:
$0.009477
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 needled the manor windows as guests finished their supper. Then the library clock stopped, though nobody heard it chime. Lady Vale collapsed beside the fireplace, clutching a crimson letter. Her husband screamed, startling the butler and three remaining guests. Inspector Rowan arrived before midnight, summoned by anonymous telephone call. Nobody admitted calling, yet every face reflected carefully practiced surprise. On Lady Vale's sleeve, Rowan found ash, seawater, and lavender. The letter contained only four words: THE TIDE REMEMBERS EVERYTHING. Outside, waves hammered cliffs fifty miles from the nearest shore.
created_at"2026-07-09T18:18:27.822Z" 7/9/2026, 6:18:27 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7972
moderation_latency(null)
generation_time20828
tokens_prompt46
tokens_completion513
native_tokens_prompt41
native_tokens_completion625
native_tokens_completion_images0
native_tokens_reasoning493
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"
usage0.0094775
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_07df90669fd45f26016a4fe5f486108194a9d9c9294f4dbb3e"
is_byokfalse
latency1076
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-1783621107-K9MQ4xDUctA8HqUphbRC"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783621107-ozBbgU4ttP373gZ0K8iQ"
upstream_id"resp_07df90669fd45f26016a4fe5f486108194a9d9c9294f4dbb3e"
total_cost0.0094775
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
sentences9
wordCounts
010
110
210
310
410
510
610
710
810