Run: 2026-04-25-01KQ2J310Y47A1WMH8852SNDWB

Run Details

Model:
DeepSeek V4 Flash
Test:
Data extraction
Scenario:
What instrument does Lucy play?
Duration:
670ms
Cost:
$0.000010
Provider:
DeepSeek

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"2026-04-25T14:53:21.314Z" 4/25/2026, 2:53:21 PM
model"deepseek/deepseek-v4-flash-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency535
moderation_latency(null)
generation_time649
tokens_prompt75
tokens_completion2
native_tokens_prompt66
native_tokens_completion2
native_tokens_completion_images(null)
native_tokens_reasoning0
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"stop"
usage0.0000098
router(null)
provider_responses
0
endpoint_id"722e0746-2034-4d6e-a08f-e6271849ee9e"
id"690d573d-8333-4307-9c80-57e346d55ef8"
is_byokfalse
latency279
model_permaslug"deepseek/deepseek-v4-flash-20260423"
provider_name"DeepSeek"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777128801-KzrpnG744WmDXtXbM61X"
session_id(null)
api_type"completions"
id"gen-1777128801-BB8hxwwuBomV0uWkw5fi"
upstream_id"690d573d-8333-4307-9c80-57e346d55ef8"
total_cost0.0000098
cache_discount(null)
upstream_inference_cost0
provider_name"DeepSeek"
response_cache_source_id(null)

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