Run: 2026-02-20-01KHY7TJ0997B2NASBD9MSRZKJ

Run Details

Model:
Grok 4 Fast
Test:
Data extraction
Scenario:
Indirect birth year
Duration:
578ms
Cost:
$0.000076
Provider:
xAI

Evaluation summary

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

Model input

User/Human
What year was Sarah born? Only return the year as a four-digit number. In 2023, Sarah celebrated her 30th birthday with a big party. Her younger sister, who is 5 years younger, couldn't attend because she was studying abroad.

Model response

AI
1993
created_at"2026-02-20T19:18:31.19Z" 2/20/2026, 7:18:31 PM
model"x-ai/grok-4-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency506
moderation_latency(null)
generation_time506
tokens_prompt58
tokens_completion1
native_tokens_prompt208
native_tokens_completion115
native_tokens_completion_images0
native_tokens_reasoning113
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"
usage0.00007645
router(null)
provider_responses
0
endpoint_id"c9586d9d-97ff-40ca-ae94-22504d6f9b7e"
id"28d785d0-cd8b-0545-04a8-596b1e0c44d6"
is_byokfalse
latency108
model_permaslug"x-ai/grok-4-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771615111-HmjNBnxe9UjzkR8jr9PS"
upstream_id"28d785d0-cd8b-0545-04a8-596b1e0c44d6"
total_cost0.00007645
cache_discount0.00002265
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
Pass Matches text
Case sensitive: 1993
 n/a
Pass Matches Regex
/\b1993\b/
 n/a
no eval