Run: 2026-07-25-01KYCR7XAN2D73ANAWZA2RJTE9

Run Details

Model:
Claude Opus 5 (Reasoning)
Test:
Data extraction
Scenario:
Contextual pronoun
Duration:
3.5s
Cost:
$0.002560
Provider:
Amazon Bedrock

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 verb "barking" indicates the subject is the dog, Spike — the nearest and only antecedent capable of barking.
created_at"2026-07-25T13:43:09.921Z" 7/25/2026, 1:43:09 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2718
moderation_latency(null)
generation_time3372
tokens_prompt50
tokens_completion49
native_tokens_prompt77
native_tokens_completion87
native_tokens_completion_images(null)
native_tokens_reasoning17
native_tokens_cached0
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"end_turn"
service_tier"default"
usage0.00256
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsed3nv75BbaAdHWSPS"
is_byokfalse
latency1497
model_permaslug"anthropic/claude-opus-5-20260723"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784986989-NZmdlk2pxxAgOaoBTNuN"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986989-lfBHViic470wYVsEQHgC"
upstream_id"msg_011CdNsed3nv75BbaAdHWSPS"
total_cost0.00256
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

Evaluation details

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