Run: 2026-05-01-01KQHSP5PW9WE23M6ERV3RJ9MT

Run Details

Model:
Grok 4.20 (Reasoning)
Test:
Data extraction
Scenario:
Guess the pet
Duration:
11.6s
Cost:
$0.001783
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 provides indirect but unambiguous clues about Emma's pet through its described traits (purring and having whiskers). These are hallmark characteristics of cats, not dogs, hamsters, or other common pets referenced. While the passage explicitly assigns "dog" to John, "cat" to Sarah, and "hamster" to Peter, it uses the behavioral descriptors exclusively for Emma, allowing deduction via process of elimination and biological knowledge that cats are the only matching animal. No contradictory information appears, confirming the inference without requiring external assumptions.
created_at"2026-05-01T12:54:45.217Z" 5/1/2026, 12:54:45 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency10357
moderation_latency(null)
generation_time11563
tokens_prompt46
tokens_completion234
native_tokens_prompt168
native_tokens_completion656
native_tokens_completion_images(null)
native_tokens_reasoning550
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"
usage0.0017828
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"1b6f292b-e87e-3ed1-817a-8f1cf2baa770"
is_byokfalse
latency105
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-1777640085-1SpVKWUBlfHyublhe36o"
session_id(null)
api_type"completions"
id"gen-1777640085-LOqele9Bn9PxWARNALcZ"
upstream_id"1b6f292b-e87e-3ed1-817a-8f1cf2baa770"
total_cost0.0017828
cache_discount0.0000672
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