Run: 2026-02-20-01KHY8ZCB6G6A5DE1JZW18PRQ5

Run Details

Model:
Grok 4.1 Fast
Test:
Data extraction
Scenario:
What's the correct time?
Duration:
39.1s
Cost:
$0.002875
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
Fail Matches Regex (details)

Model input

User/Human
What is the correct time based on the following text? Only return the time in HH:MM format, nothing else. The clock shows 3:45. It's 15 minutes slow. The actual time is a quarter past an hour.

Model response

AI
4:00
created_at"2026-02-20T19:38:37.806Z" 2/20/2026, 7:38:37 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency962
moderation_latency(null)
generation_time39089
tokens_prompt50
tokens_completion677
native_tokens_prompt204
native_tokens_completion5730
native_tokens_completion_images0
native_tokens_reasoning5727
native_tokens_cached203
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"
usage0.00287535
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"0fb1bd88-25a3-c32a-401e-eab77881e054"
is_byokfalse
latency770
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771616317-OzEL1yfp1cgeAExppgK2"
upstream_id"0fb1bd88-25a3-c32a-401e-eab77881e054"
total_cost0.00287535
cache_discount0.00003045
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
Fail Matches Regex
/\b0?4:15\b/i
 n/a