Run: 2026-05-01-01KQHT5XYB2TAYAEGG8ECZJ40P

Run Details

Model:
Grok 4.20 (Reasoning)
Test:
Data extraction
Scenario:
Who's the tallest?
Duration:
6.5s
Cost:
$0.001337
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 relations are: Sarah > Jill > (Jack = Mike) and Jill > Tom. Sarah is strictly taller than everyone else mentioned, with no ties or unknowns that could place anyone above her.
created_at"2026-05-01T13:03:21.552Z" 5/1/2026, 1:03:21 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5826
moderation_latency(null)
generation_time6478
tokens_prompt52
tokens_completion135
native_tokens_prompt167
native_tokens_completion478
native_tokens_completion_images(null)
native_tokens_reasoning437
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"
usage0.00133655
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"ac348c9c-1b89-9300-8fb0-fa9a8cb303b8"
is_byokfalse
latency106
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-1777640601-dq9lE6FqS9ME6fC562qq"
session_id(null)
api_type"completions"
id"gen-1777640601-lKHM3RqRRoqaZoSzdH7P"
upstream_id"ac348c9c-1b89-9300-8fb0-fa9a8cb303b8"
total_cost0.00133655
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