Run: 2026-05-01-01KQHRKBA3AY7CXCR1P42GN432

Run Details

Scenario:
Guess the pet
Duration:
4.7s
Cost:
$0.001208
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
Fail Matches text (details)
Pass Matches Regex (details)
no eval Overall

Model input

User/Human
What pet does Emma own based on the following text? Only return the pet type, nothing else. John has a dog. Sarah owns a cat. Emma's pet purrs and has whiskers. Peter has a hamster.

Model response

AI
cat The text describes Emma's pet as one that "purrs and has whiskers." This directly matches the known traits of a cat (purring is a hallmark behavior, and whiskers are a standard facial feature). By contrast, the other pets listed (dog, hamster) do not characteristically purr. The mention of Sarah owning a cat does not contradict or preclude Emma from also owning one, as the descriptions are independent. Thus, the only logical inference is that Emma owns a cat.
created_at"2026-05-01T12:35:44.073Z" 5/1/2026, 12:35:44 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3580
moderation_latency(null)
generation_time4653
tokens_prompt46
tokens_completion148
native_tokens_prompt168
native_tokens_completion453
native_tokens_completion_images(null)
native_tokens_reasoning355
native_tokens_cached128
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"
usage0.0012081
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"ad218a51-d9a5-0b8b-6535-f12d0dec33fe"
is_byokfalse
latency70
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-1777638944-YOaCZUvobVlcIKxwH17d"
session_id(null)
api_type"completions"
id"gen-1777638944-ZpQS6LoxAklXCnG4ysv8"
upstream_id"ad218a51-d9a5-0b8b-6535-f12d0dec33fe"
total_cost0.0012081
cache_discount0.0001344
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
Fail Matches text
Case insensitive: cat
n/a
Pass Matches Regex
/\bcat\b/i
n/a
no eval