Run: 2026-02-20-01KHY9CSN6C0M3Z0GN3Z7VTBW9

Run Details

Model:
Grok 4
Duration:
26.3s
Cost:
$0.012670
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
64.16% 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
The fog-shrouded manor loomed ominously on the hilltop, its ancient stone walls whispering secrets from a bygone era of intrigue. Inside, Lord Archibald Blackwell gathered his eccentric guests for what promised to be an unforgettable evening of fine dining and revelations. Candlelight flickered across polished silverware and crystal glasses, casting long shadows that danced like specters on the ornate wallpaper. Lady Eliza, resplendent in emerald silk, smiled graciously at the assembled company, hiding her own web of hidden motives and resentments. Suddenly, a piercing scream echoed through the grand dining hall, shattering the fragile veneer of civility among the startled diners. Rushing to the source, they discovered the butler's lifeless body slumped in the dimly lit pantry, a dagger protruding from his chest. Blood pooled on the cold marble floor, staining the scene with accusations, as whispers of foul play rippled through the group. Detective Harlan Crowe arrived swiftly at the chaotic manor, his keen eyes scanning for clues amid the growing atmosphere of suspicion. Each guest harbored a potential alibi or motive, turning the opulent estate into a labyrinth of deception and deadly secrets.
created_at"2026-02-20T19:45:57.427Z" 2/20/2026, 7:45:57 PM
model"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency16312
moderation_latency(null)
generation_time26225
tokens_prompt46
tokens_completion318
native_tokens_prompt719
native_tokens_completion805
native_tokens_completion_images0
native_tokens_reasoning576
native_tokens_cached694
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0126705
router(null)
provider_responses
0
endpoint_id"d40bef9d-6936-4c57-9749-bf7399de4a77"
id"d7daace2-2755-57d6-0d56-c35aca4954a3"
is_byokfalse
latency89
model_permaslug"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
provider_name"xAI"
status200
api_type"completions"
id"gen-1771616757-izMPYAJwSb1CR6Gr9AYO"
upstream_id"d7daace2-2755-57d6-0d56-c35aca4954a3"
total_cost0.0126705
cache_discount0.0015615
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
64.16% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
021
121
219
321
420
522
621
721
820