Run: 2026-03-12-01KKHZA4ASJ686EJHDTH0FSKN7

Run Details

Model:
Grok 4.20 (Beta, Reasoning)
Test:
Data extraction
Scenario:
What instrument does Lucy play?
Duration:
2.0s
Cost:
$0.002931
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
Pass Matches text (details)
Pass Matches Regex (details)
no eval Overall

Model input

User/Human
What instrument does Lucy play based on the following text? Only return the instrument, nothing else. In the school band, there are four instruments: drums, bass, flute, trumped. John plays the drums, Mary plays the flute, and Pete plays the trumpet. Lucy doesn't play a wind instrument.

Model response

AI
bass
created_at"2026-03-12T21:30:14.75Z" 3/12/2026, 9:30:14 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1927
moderation_latency(null)
generation_time1945
tokens_prompt75
tokens_completion1
native_tokens_prompt185
native_tokens_completion446
native_tokens_completion_images0
native_tokens_reasoning445
native_tokens_cached64
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"
usage0.0029308
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"7819f6ed-c4f7-b196-0810-75146ef5758c"
is_byokfalse
latency314
model_permaslug"x-ai/grok-4.20-beta-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773351014-PGgprxAya7OzNEUnGT1i"
upstream_id"7819f6ed-c4f7-b196-0810-75146ef5758c"
total_cost0.0029308
cache_discount0.0001152
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
Pass Matches text
Case insensitive: bass
 n/a
Pass Matches Regex
/\bbass\b/i
 n/a
no eval