Run: 2026-09-02-01M1HJX6NECFVSG8MDJ606MJ22

Run Details

Model:
Gemini 3.8 Flash (Reasoning, Medium)
Test:
Data extraction
Scenario:
What instrument does Lucy play?
Duration:
1.3s
Cost:
$0.000777
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
Pass Matches text (details)
Pass 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
bass
created_at"2026-09-02T17:33:13.783Z" 9/2/2026, 5:33:13 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1242
moderation_latency(null)
generation_time1242
tokens_prompt74
tokens_completion1
native_tokens_prompt66
native_tokens_completion194
native_tokens_completion_images0
native_tokens_reasoning193
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"
service_tier"default"
usage0.000777
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788370393-RvfYgmPAewe5aGm8eJy3"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788370393-lgnLAKSjpFmmyjc3E718"
upstream_id"2V2YapCqM_HP_uMPpLjQ-Q0"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"2V2YapCqM_HP_uMPpLjQ-Q0"
is_byokfalse
latency1242
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.000777
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

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