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Run: 2026-04-24-01KQ056WHHA3ZWA64YJY3BMYTA
Run Details
Model:
GPT-OSS 120B
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
20.5s
Cost:
$0.000684
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
Messages
Meta
AI
Rain hammered the cobblestones as Detective Marlow arrived, his coat dripping, eyes scanning the dimly lit alley for a mystery. A crimson stain glistened on the pavement, spreading slowly, whispering secrets of a life abruptly extinguished under the shivering moonlight. Neighbors peered from cracked windows, murmuring prayers, unaware that the murderer lingered, hidden within their frightened shadows of the night. Marlow knelt, inhaling metallic perfume, his mind cataloguing clues, each detail forming a tapestry of betrayal within the silent city. A distant clock struck midnight, echoing through alleys, announcing that justice would awaken, relentless, unforgiving, and inevitable in the dark.
created_at
"2026-04-24T16:29:47.45Z"
4/24/2026, 4:29:47 PM
model
"openai/gpt-oss-120b"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
424
moderation_latency
(null)
generation_time
20401
tokens_prompt
46
tokens_completion
1167
native_tokens_prompt
107
native_tokens_completion
1129
native_tokens_completion_images
(null)
native_tokens_reasoning
991
native_tokens_cached
69
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.000684066
router
(null)
provider_responses
0
endpoint_id
"0d478558-8c4b-4f0c-b3b0-871c959225ae"
id
"chatcmpl-e132bc1e8fb84435bed34b12e9f94217"
is_byok
false
latency
424
model_permaslug
"openai/gpt-oss-120b"
provider_name
"Fireworks"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer
(null)
request_id
"req-1777048187-1QvxuDQHn7PTbC9BmXjn"
session_id
(null)
api_type
"completions"
id
"gen-1777048187-qpXvDCMmnKsZ3HIMEbHd"
upstream_id
"chatcmpl-e132bc1e8fb84435bed34b12e9f94217"
total_cost
0.000684066
cache_discount
0.000009384
upstream_inference_cost
0
provider_name
"Fireworks"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
20
1
20
2
20
3
20
4
20