Run: 2026-05-31-01KSYXN3C94VCP6XDHEFMMVSMV

Run Details

Model:
Claude Opus 4.8 (Reasoning, High)
Test:
Data extraction
Scenario:
Who's the tallest?
Duration:
3.0s
Cost:
$0.001880
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"2026-05-31T11:45:35.638Z" 5/31/2026, 11:45:35 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2429
moderation_latency(null)
generation_time2970
tokens_prompt52
tokens_completion44
native_tokens_prompt76
native_tokens_completion60
native_tokens_completion_images(null)
native_tokens_reasoning42
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"
usage0.00188
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01SGXLnhHjho9HhGd1tcZ1AK"
is_byokfalse
latency996
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-1780227935-Fn5Jyu1Nna73witRjXqr"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227935-qZ1829k8PY6kyX3Byt1N"
upstream_id"msg_01SGXLnhHjho9HhGd1tcZ1AK"
total_cost0.00188
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