Run: 2026-07-25-01KYCPRQEJ91H7S33EJGYH53BG

Run Details

Duration:
6.9s
Cost:
$0.006375
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
92.79% 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 hammered the study windows. Inspector Halloway removed her gloves. The body lay face-down. Blood pooled beneath the desk. A brass letter-opener was missing. Someone had rearranged the bookshelves. Every spine faced the wall. That detail bothered her most. The victim was Edmund Pryce. He collected rare first editions. His fingers clutched torn paper. Three words remained legible: "ask about Marguerite." Halloway pocketed the fragment carefully. Outside, four guests waited nervously. None had left the manor. The storm sealed them in. She counted the wine glasses. There were six, not five. Someone unaccounted for had drunk. Halloway smiled without any warmth. This would be a long night.
created_at"2026-07-25T13:17:23.8Z" 7/25/2026, 1:17:23 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2065
moderation_latency(null)
generation_time6847
tokens_prompt46
tokens_completion175
native_tokens_prompt60
native_tokens_completion243
native_tokens_completion_images(null)
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"end_turn"
service_tier"default"
usage0.006375
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNqgetFAzdaNVGNj253m"
is_byokfalse
latency2065
model_permaslug"anthropic/claude-opus-5-20260723"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784985443-qO4iit3y1KoUpwQlbuC3"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784985443-jcb49xXXg0niSDnzytYq"
upstream_id"msg_011CdNqgetFAzdaNVGNj253m"
total_cost0.006375
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
92.79% Matches word count n/a
neededCleanfalse
sentences20
wordCounts
05
15
24
35
45
55
65
75
85
95
105
1112
125
135
145
155
165
175
185
196