Run: 2026-07-25-01KYCR7GJX8AEW4S7SY0E18SHR

Run Details

Duration:
17.2s
Cost:
$0.031450
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
98.23% 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 drummed against the windows. Inspector Vale hated wet mornings. The body lay face down. Blood pooled beneath the writing desk. Wait—blood pooled beneath the desk. Constable Reed guarded the door. His young face looked green. The study smelled faintly wrong. Someone had rearranged the books. Every spine faced the wall. That detail troubled Vale most. The housekeeper discovered him first. She swore nothing was stolen. Vale did not believe her. A teacup sat there, steaming. Two cups, actually, both used. So the killer drank tea. Vale knelt beside the corpse. The dead man's watch stopped. Its hands read exactly midnight. But the mantel clock disagreed. Someone had wound time backward. Outside, thunder split the sky. Vale straightened and sighed softly. This case would take weeks.
created_at"2026-07-25T13:42:56.868Z" 7/25/2026, 1:42:56 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4355
moderation_latency(null)
generation_time17029
tokens_prompt46
tokens_completion333
native_tokens_prompt60
native_tokens_completion1246
native_tokens_completion_images(null)
native_tokens_reasoning134
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"
usage0.03145
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsdfYaMtKwBHGAhBitn"
is_byokfalse
latency1740
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-1784986976-KarryJj07L7aE3FbPIAF"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986976-4MwkFwhgwsEYTL8ixWGe"
upstream_id"msg_011CdNsdfYaMtKwBHGAhBitn"
total_cost0.03145
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
98.23% Matches word count n/a
neededCleanfalse
sentences25
wordCounts
05
15
25
36
46
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
245