Run: 2026-05-29-01KSSJY0NJ31E9Q5HX2XGGEH03

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Data extraction
Scenario:
Guess the pet
Duration:
1.2s
Cost:
$0.000500
Provider:
Anthropic

Evaluation summary

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

Model input

User/Human
What pet does Emma own based on the following text? Only return the pet type, nothing else. John has a dog. Sarah owns a cat. Emma's pet purrs and has whiskers. Peter has a hamster.

Model response

AI
Cat
created_at"2026-05-29T10:02:01.277Z" 5/29/2026, 10:02:01 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1090
moderation_latency(null)
generation_time1160
tokens_prompt46
tokens_completion1
native_tokens_prompt75
native_tokens_completion5
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.0005
router(null)
provider_responses
0
endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_016UP7MJxw96NbTZgQDs66LP"
is_byokfalse
latency1090
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780048921-4X1m2OS2CnNa8mzCs1oz"
session_id(null)
api_type"completions"
id"gen-1780048921-zI0VdzPX2IMN9CtvcVzC"
upstream_id"msg_016UP7MJxw96NbTZgQDs66LP"
total_cost0.0005
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

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