Run: 2026-05-01-01KQHRWJ65RJPQ9EYWJXF8VXSE

Run Details

Model:
Grok 4.20
Test:
Data extraction
Scenario:
Indirect birth year
Duration:
722ms
Cost:
$0.000151
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
Fail 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
2023 - 30 = 1993. The additional detail about her sister is irrelevant to the question. **1993**
created_at"2026-05-01T12:40:46.027Z" 5/1/2026, 12:40:46 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency364
moderation_latency(null)
generation_time673
tokens_prompt58
tokens_completion26
native_tokens_prompt174
native_tokens_completion27
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached128
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"
usage0.0001506
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"4390c188-9b63-97bd-9df1-29aace458468"
is_byokfalse
latency98
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-1777639246-VIpWkzt7zlhuLjnguNCv"
session_id(null)
api_type"completions"
id"gen-1777639246-Q0n2vOqRrUZ17QC3SyGk"
upstream_id"4390c188-9b63-97bd-9df1-29aace458468"
total_cost0.0001506
cache_discount0.0001344
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

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