Run: 2026-05-01-01KQHR7JMHXFR65YZCVCRPD9EW

Run Details

Duration:
11.3s
Cost:
$0.001315
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 anaphorically refers to the most salient antecedent from the discourse context: "Spike, the dog" (the only entity described as being in a kennel and the only one for which barking is a typical, coherent action). Pronoun resolution follows standard centering theory and coherence constraints (e.g., Hobbs 1978; Kehler 2002), where the subject of the immediately preceding clause is preferentially continued unless semantic or world-knowledge cues dictate otherwise; here both point unambiguously to Spike.
created_at"2026-05-01T12:29:18.37Z" 5/1/2026, 12:29:18 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9075
moderation_latency(null)
generation_time11193
tokens_prompt51
tokens_completion229
native_tokens_prompt170
native_tokens_completion468
native_tokens_completion_images(null)
native_tokens_reasoning360
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"
usage0.0013153
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"0681ad7e-e7ac-96ce-b9f3-adaf013719a4"
is_byokfalse
latency112
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-1777638558-hYTgyHRdhC7GAw6RofE5"
session_id(null)
api_type"completions"
id"gen-1777638558-QSnabcsMRlU25z0Rjbpw"
upstream_id"0681ad7e-e7ac-96ce-b9f3-adaf013719a4"
total_cost0.0013153
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: Spike
n/a
Pass Matches Regex
/\bSpike\b/
n/a
no eval