Run: 2026-10-13-01M4TAYQH4ESTP0ARPFZHT3XFQ

Run Details

Duration:
37.7s
Cost:
$0.029725
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 Voss counted the elevator buttons and tried not to touch the polished brass. Upstairs, the gallery lights were still burning, although every witness insisted the final guest had departed before the thunder broke. The victim lay beside a shattered champagne flute, one glove missing, one cufflink gleaming beneath the white piano in silence. A red thread crossed the Persian carpet toward the conservatory, stopping where the winter roses stood black with frost tonight. Mara photographed the thread, then noticed the victim's watch still ticking, although its engraved hands pointed backward toward eleven exactly.
created_at"2026-10-13T09:54:30.573Z" 10/13/2026, 9:54:30 AM
model"fireworks/ember-1-20260923"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency448
moderation_latency(null)
generation_time37710
tokens_prompt46
tokens_completion2108
native_tokens_prompt123
native_tokens_completion1979
native_tokens_completion_images(null)
native_tokens_reasoning1848
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)
usage0.0297246
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791885270-u3iCVon3wpYshyolIG46"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791885270-njMEuEOHQxDd5Ap9IENI"
upstream_id"chatcmpl-0abd7d0c275247f6ab2e76fff138643e"
provider_responses
0
endpoint_id"b89a2f05-4051-4446-a9b0-7bc8ae7b7c90"
id"chatcmpl-0abd7d0c275247f6ab2e76fff138643e"
is_byokfalse
latency448
model_permaslug"fireworks/ember-1-20260923"
provider_name"Fireworks"
status200
total_cost0.0297246
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
sentences5
wordCounts
020
120
220
320
420