Run: 2026-05-29-01KSSK14Y9N0N98X89GPFPYKAQ

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Data extraction
Scenario:
What's the correct time?
Duration:
10.6s
Cost:
$0.017735
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"2026-05-29T10:03:43.954Z" 5/29/2026, 10:03:43 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2758
moderation_latency(null)
generation_time10545
tokens_prompt50
tokens_completion380
native_tokens_prompt72
native_tokens_completion695
native_tokens_completion_images(null)
native_tokens_reasoning378
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"
usage0.017735
router(null)
provider_responses
0
endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_01HSpaXdWkQF7c3xM5JX7cyd"
is_byokfalse
latency921
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-1780049023-iQHzKa7yPw2J6Zic4Ru8"
session_id(null)
api_type"completions"
id"gen-1780049023-AjUSecpigv3Z5xiQKZ74"
upstream_id"msg_01HSpaXdWkQF7c3xM5JX7cyd"
total_cost0.017735
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