Run: 2026-02-20-01KHYAX2N1V7QH1ZT4FYWA2V3Q

Run Details

Model:
Grok 4 Fast
Test:
Data extraction
Scenario:
Who's the sister?
Duration:
1.1s
Cost:
$0.000074
Provider:
xAI

Evaluation summary

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

Model input

User/Human
Who is the sister of Sandie based on the following text? Only return the name, nothing else. Sandie has a doll named Lulu, she carries it around all day. She says she's her little sister, but her actual sister's name is Cassie.

Model response

AI
Cassie
created_at"2026-02-20T20:12:19.499Z" 2/20/2026, 8:12:19 PM
model"x-ai/grok-4-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1059
moderation_latency(null)
generation_time1070
tokens_prompt59
tokens_completion2
native_tokens_prompt207
native_tokens_completion110
native_tokens_completion_images0
native_tokens_reasoning108
native_tokens_cached151
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.00007375
router(null)
provider_responses
0
endpoint_id"c9586d9d-97ff-40ca-ae94-22504d6f9b7e"
id"c7f7a5f7-3cc2-8c0b-54b1-04e2201e1040"
is_byokfalse
latency82
model_permaslug"x-ai/grok-4-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771618339-fDqgtwlGxp62Zmf1pCFk"
upstream_id"c7f7a5f7-3cc2-8c0b-54b1-04e2201e1040"
total_cost0.00007375
cache_discount0.00002265
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
Pass Matches text
Case sensitive: Cassie
 n/a
Pass Matches Regex
/\bCassie\b/
 n/a
no eval