Run: 2026-10-13-01M4TBZG968M97ENYT0R2J3S4E

Run Details

Duration:
39.7s
Cost:
$0.030475
Provider:
Fireworks

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain hammered the glass while Inspector Mara Venn entered the ballroom and found Sir Julian Hale beside the fallen chandelier. His white gloves were spotless yet one crimson thread clung to the silver cuff like a signature written for her. The orchestra had vanished before midnight though their chairs still circled the podium as if music might summon them back. A champagne coupe sweated on the piano beside a key that opened nothing in the house except the cellar door. Mara tasted the air and caught bitter almonds beneath perfume then saw the painted hostess smiling across the darkened hall. Outside thunder erased the gravel path and every footprint waited under the conservatory door like evidence patiently holding its breath. Then the lights failed and somewhere above them a woman laughed once before the house swallowed the sound completely again.
created_at"2026-10-13T10:12:24.494Z" 10/13/2026, 10:12:24 AM
model"fireworks/ember-1-20260923"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2158
moderation_latency(null)
generation_time39697
tokens_prompt46
tokens_completion2141
native_tokens_prompt123
native_tokens_completion2029
native_tokens_completion_images(null)
native_tokens_reasoning1860
native_tokens_cached122
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(null)
usage0.0304746
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791886344-Fp3JwZrH3wqjYRIVuyP4"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791886344-9FpJhCuL8hswBfB49Y9d"
upstream_id"chatcmpl-46949f677caa453ba20df7f3c4be96f3"
provider_responses
0
endpoint_id"b89a2f05-4051-4446-a9b0-7bc8ae7b7c90"
id"chatcmpl-46949f677caa453ba20df7f3c4be96f3"
is_byokfalse
latency1956
model_permaslug"fireworks/ember-1-20260923"
provider_name"Fireworks"
status200
total_cost0.0304746
cache_discount0.0003294
upstream_inference_cost0
provider_name"Fireworks"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
020
120
220
320
420
520
620