Run: 2026-06-01-01KT1G0EKJDA4W0Q663JRY46FN

Run Details

Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Data extraction
Scenario:
Indirect birth year
Duration:
2.7s
Cost:
$0.001100
Provider:
Anthropic

Evaluation summary

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

Model input

User/Human
What year was Sarah born? Only return the year as a four-digit number. In 2023, Sarah celebrated her 30th birthday with a big party. Her younger sister, who is 5 years younger, couldn't attend because she was studying abroad.

Model response

AI
1993
created_at"2026-06-01T11:44:50.977Z" 6/1/2026, 11:44:50 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2220
moderation_latency(null)
generation_time2422
tokens_prompt58
tokens_completion14
native_tokens_prompt85
native_tokens_completion27
native_tokens_completion_images(null)
native_tokens_reasoning13
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"
usage0.0011
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_019BDCihfAHMrye9sY4yPrSH"
is_byokfalse
latency1119
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-1780314291-OZ5I5GneiJcs24QBMhSV"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780314291-cCjqTCC9eo7ZW4VrHI17"
upstream_id"msg_019BDCihfAHMrye9sY4yPrSH"
total_cost0.0011
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: 1993
 n/a
Pass Matches Regex
/\b1993\b/
 n/a
no eval