Run: 2026-05-01-01KQHRCJXGDE6H1F73F2Y0BWMX

Run Details

Duration:
1.5s
Cost:
$0.000294
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
97.54% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Dark shadows filled the room. Silence hung heavy everywhere. A single candle flickered weakly. Blood pooled on wooden floorboards. The door creaked open slowly. Footsteps echoed through cold hallway. Detective entered with narrowed eyes. Victim lay completely motionless now. Mystery began its deadly dance.
created_at"2026-05-01T12:32:02.484Z" 5/1/2026, 12:32:02 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency411
moderation_latency(null)
generation_time1485
tokens_prompt46
tokens_completion87
native_tokens_prompt157
native_tokens_completion66
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.00029405
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"cc745960-0f8a-964a-9bac-9baad2c8522e"
is_byokfalse
latency140
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-1777638722-D01JUTSJdVHYyL0KzLD0"
session_id(null)
api_type"completions"
id"gen-1777638722-9NFTMuRR1k8xm2FLpTDE"
upstream_id"cc745960-0f8a-964a-9bac-9baad2c8522e"
total_cost0.00029405
cache_discount0.0000672
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
97.54% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
05
14
25
35
45
55
65
75
85