Run: 2026-05-01-01KQHQV1JW9SBKFCNC0D9ZTW73

Run Details

Duration:
8.4s
Cost:
$0.001601
Provider:
xAI

Evaluation summary

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

Model input

User/Human
Who does "he" refer to in the last sentence? Only return the name. Tom and Jerry were playing in the yard. Spike, the dog, was watching them from his kennel. Suddenly, he started barking loudly.

Model response

AI
Spike The pronoun "he" in the final sentence ("Suddenly, he started barking loudly") is resolved via standard anaphora rules: antecedents are typically the most recent grammatically compatible noun phrase that also satisfies semantic plausibility. Here, "Spike, the dog" is the nearest male referent and the only entity for whom barking is a canonical action; "his kennel" further confirms the referent is the dog. Neither Tom nor Jerry fits, as the preceding clause centers on Spike's activity (watching from the kennel) and real-world knowledge (cartoon canine behavior) aligns exclusively with the dog. No discourse cues shift the focus back to Tom or Jerry.
created_at"2026-05-01T12:22:27.683Z" 5/1/2026, 12:22:27 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6063
moderation_latency(null)
generation_time8288
tokens_prompt51
tokens_completion235
native_tokens_prompt170
native_tokens_completion609
native_tokens_completion_images(null)
native_tokens_reasoning475
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"
usage0.0016006
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"4e2b6ade-1238-94e1-95c3-42ade9b0b647"
is_byokfalse
latency54
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-1777638147-uzSgeTWf9xJh3g200IFQ"
session_id(null)
api_type"completions"
id"gen-1777638147-PA5LyHUSfygxK4jiRiYy"
upstream_id"4e2b6ade-1238-94e1-95c3-42ade9b0b647"
total_cost0.0016006
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: Spike
n/a
Pass Matches Regex
/\bSpike\b/
n/a
no eval