Run: 2026-05-01-01KQHSRT1ZQH6W8C5ZA716GN2X

Run Details

Duration:
34.5s
Cost:
$0.008547
Provider:
xAI

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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The prominent banker was discovered lying lifeless in his grand library late one stormy night by his faithful old servant. Inspector Harlan arrived promptly at the isolated estate after getting an emergency telephone call from the very panicked staff members. The spacious library showed absolutely no signs of struggle yet the banker had been poisoned with a rare deadly toxin. Shadows danced ominously across the dark walls as the grandfather clock ticked steadily marking the hours in eerie silence now.
created_at"2026-05-01T12:56:11.589Z" 5/1/2026, 12:56:11 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency33836
moderation_latency(null)
generation_time34397
tokens_prompt46
tokens_completion830
native_tokens_prompt159
native_tokens_completion3366
native_tokens_completion_images(null)
native_tokens_reasoning3281
native_tokens_cached64
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"
usage0.00854655
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"2e1dbb66-a367-3958-d017-de069f7a05c7"
is_byokfalse
latency95
model_permaslug"x-ai/grok-4.20-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777640171-oEuuRZcJ9wQRz19r7ox4"
session_id(null)
api_type"completions"
id"gen-1777640171-dUqIqlhzYfCUehQrVv50"
upstream_id"2e1dbb66-a367-3958-d017-de069f7a05c7"
total_cost0.00854655
cache_discount0.0000672
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
120
220
320