Run: 2026-05-01-01KQHRMFKBYEZTFNBDWXP8SNYM

Run Details

Duration:
18.0s
Cost:
$0.004604
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The wealthy businessman was found murdered in his study today. Police officers gathered around the victim with serious expressions now. Detectives examined the crime scene for any useful clues carefully. Suspects included family members and business partners without alibis yet. The storm raged outside adding tension to the situation inside.
created_at"2026-05-01T12:36:21.231Z" 5/1/2026, 12:36:21 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17520
moderation_latency(null)
generation_time17958
tokens_prompt46
tokens_completion468
native_tokens_prompt159
native_tokens_completion1789
native_tokens_completion_images(null)
native_tokens_reasoning1730
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"
usage0.00460405
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"6f8946b9-65d3-e558-aea9-ca0bbb6a8379"
is_byokfalse
latency88
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-1777638981-TWz3ZrHiPORydcVj8KDU"
session_id(null)
api_type"completions"
id"gen-1777638981-riIe5KiutCjgJuwm93AI"
upstream_id"6f8946b9-65d3-e558-aea9-ca0bbb6a8379"
total_cost0.00460405
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
sentences5
wordCounts
010
110
210
310
410