Run: 2026-05-29-01KSSJP39ESN00M6GR81QTFR4R

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Data extraction
Scenario:
Who's the tallest?
Duration:
3.2s
Cost:
$0.002330
Provider:
Anthropic

Evaluation summary

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

Model input

User/Human
Who is the tallest person based on the following text? Only return the name, nothing else. Jack is shorter than Jill. Jill is taller than Tom but shorter than Sarah. Mike is the same height as Jack.

Model response

AI
Sarah
created_at"2026-05-29T09:57:41.817Z" 5/29/2026, 9:57:41 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2449
moderation_latency(null)
generation_time3162
tokens_prompt52
tokens_completion68
native_tokens_prompt76
native_tokens_completion78
native_tokens_completion_images(null)
native_tokens_reasoning66
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"
usage0.00233
router(null)
provider_responses
0
endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_01YLwf6f5kqEi2qVm27BUp4c"
is_byokfalse
latency1137
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-1780048661-zDAN1SyasQBEKthwSkcb"
session_id(null)
api_type"completions"
id"gen-1780048661-9oVngP71PXnMhdlzbmCE"
upstream_id"msg_01YLwf6f5kqEi2qVm27BUp4c"
total_cost0.00233
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 sensitive: Sarah
 n/a
Pass Matches Regex
/\bSarah\b/
 n/a
no eval