Run: 2026-04-24-01KQ0PZ3EYSP08K0Q7NZRFQ7W6

Run Details

Model:
GPT-5.5
Duration:
3.4s
Cost:
$0.003265
Provider:
OpenAI

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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain stitched silver across Hawthorne. Inspector Vale arrived before dawn. The manor windows glowed weakly. Someone inside had screamed once. Now every guest stood silent. Lord Bellamy lay beneath roses. Blood darkened his white cravat. A dagger glittered beside him. No one admitted touching it. Vale counted faces, then footprints. One set vanished near firelight. The butler whispered, "Impossible, sir." Vale smiled without any warmth. "Nothing impossible leaves a corpse."
created_at"2026-04-24T21:40:06.759Z" 4/24/2026, 9:40:06 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency666
moderation_latency(null)
generation_time3280
tokens_prompt46
tokens_completion129
native_tokens_prompt41
native_tokens_completion102
native_tokens_completion_images0
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"completed"
usage0.003265
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0f7d6e057b4cef430169ebe336e7c48196a156f9f6a52f5ec7"
is_byokfalse
latency407
model_permaslug"openai/gpt-5.5-20260423"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777066806-eIZuPEQg94aewJu3nHId"
session_id(null)
api_type"completions"
id"gen-1777066806-oGGVuQaANsnnO1TEfOOw"
upstream_id"resp_0f7d6e057b4cef430169ebe336e7c48196a156f9f6a52f5ec7"
total_cost0.003265
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences14
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135