Run: 2026-05-01-01KQHRKW69K26HG2XG6ANJJAKM

Run Details

Model:
Grok 4.20 (Reasoning)
Test:
Data extraction
Scenario:
Who's the tallest?
Duration:
7.4s
Cost:
$0.001902
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
Fail 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 The text establishes a clear height ordering: Sarah > Jill > (Jack = Mike, Tom). No individual exceeds Sarah's height, making her the tallest by direct implication from the comparative statements provided.
created_at"2026-05-01T12:36:01.358Z" 5/1/2026, 12:36:01 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6883
moderation_latency(null)
generation_time7337
tokens_prompt52
tokens_completion157
native_tokens_prompt167
native_tokens_completion704
native_tokens_completion_images(null)
native_tokens_reasoning663
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"
usage0.00190155
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"994c6f1a-500d-a224-6d5b-ffd6390c04b1"
is_byokfalse
latency70
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-1777638961-UiKQfVu8O0Ng4BZMFeyo"
session_id(null)
api_type"completions"
id"gen-1777638961-1m2wJuzyzclPHEfv0SQH"
upstream_id"994c6f1a-500d-a224-6d5b-ffd6390c04b1"
total_cost0.00190155
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 sensitive: Sarah
 n/a
Pass Matches Regex
/\bSarah\b/
 n/a
no eval