Run: 2026-02-20-01KHY9NBYKKWW7DNJ6X3JCXCVG

Run Details

Model:
Grok 4 Fast
Test:
Data extraction
Scenario:
Who's the tallest?
Duration:
2.5s
Cost:
$0.000122
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 tallest person based on the following text? Only return the name, nothing else. Jack is shorter than Jill. Jill is taller than Tom but shorter than Sarah. Mike is the same height as Jack.

Model response

AI
Sarah
created_at"2026-02-20T19:50:38.303Z" 2/20/2026, 7:50:38 PM
model"x-ai/grok-4-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2404
moderation_latency(null)
generation_time2427
tokens_prompt52
tokens_completion2
native_tokens_prompt199
native_tokens_completion210
native_tokens_completion_images0
native_tokens_reasoning209
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"
usage0.00012215
router(null)
provider_responses
0
endpoint_id"c9586d9d-97ff-40ca-ae94-22504d6f9b7e"
id"a5a986df-3c8e-7cf9-6a5f-cda93278bd74"
is_byokfalse
latency64
model_permaslug"x-ai/grok-4-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771617038-v9JR2UTCuq82va00nRuZ"
upstream_id"a5a986df-3c8e-7cf9-6a5f-cda93278bd74"
total_cost0.00012215
cache_discount0.00002265
upstream_inference_cost0
provider_name"xAI"

Evaluation details

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