Run: 2026-03-18-01KM09BSWXK46K9ZE19TZRT2DZ

Run Details

Model:
GPT-5.4 Nano
Test:
Data extraction
Scenario:
What instrument does Lucy play?
Duration:
540ms
Cost:
$0.000021
Provider:
OpenAI

Evaluation summary

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

Model input

User/Human
What instrument does Lucy play based on the following text? Only return the instrument, nothing else. In the school band, there are four instruments: drums, bass, flute, trumped. John plays the drums, Mary plays the flute, and Pete plays the trumpet. Lucy doesn't play a wind instrument.

Model response

AI
drums
created_at"2026-03-18T10:55:17.416Z" 3/18/2026, 10:55:17 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency459
moderation_latency(null)
generation_time509
tokens_prompt75
tokens_completion2
native_tokens_prompt67
native_tokens_completion6
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0000209
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_045005d1e0f8c5a50169ba849579e48193aa742212b07ec006"
is_byokfalse
latency193
model_permaslug"openai/gpt-5.4-nano-20260317"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773831317-mr4LRBpF8PqWCtwQcxaz"
upstream_id"resp_045005d1e0f8c5a50169ba849579e48193aa742212b07ec006"
total_cost0.0000209
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
Fail Matches text
Case insensitive: bass
 n/a
Fail Matches Regex
/\bbass\b/i
 n/a
no eval