Run: 2026-05-29-01KSSJEQFHJCEFC79KFFYT4S56

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Data extraction
Scenario:
What's the correct time?
Duration:
8.1s
Cost:
$0.015360
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
Fail Matches Regex (details)

Model input

User/Human
What is the correct time based on the following text? Only return the time in HH:MM format, nothing else. The clock shows 3:45. It's 15 minutes slow. The actual time is a quarter past an hour.

Model response

AI
**04:00**
created_at"2026-05-29T09:53:40.344Z" 5/29/2026, 9:53:40 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3091
moderation_latency(null)
generation_time8061
tokens_prompt50
tokens_completion92
native_tokens_prompt72
native_tokens_completion600
native_tokens_completion_images(null)
native_tokens_reasoning89
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"
usage0.01536
router(null)
provider_responses
0
endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_01XpgNYa694ajPHkbnVJu5Gz"
is_byokfalse
latency1014
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-1780048420-c1iD3dfxUyqZ1iPFTmUd"
session_id(null)
api_type"completions"
id"gen-1780048420-12XXA4ALlCk02FkZnt8U"
upstream_id"msg_01XpgNYa694ajPHkbnVJu5Gz"
total_cost0.01536
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
Fail Matches Regex
/\b0?4:15\b/i
 n/a