Run: 2026-06-01-01KT1HFAPGDYH7FX2VJEABQTT6

Run Details

Duration:
17.0s
Cost:
$0.007975
Provider:
Amazon Bedrock

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 hammered the old mansion. Detective Cole arrived past midnight. The front door stood open. Inside, candles flickered against shadows. A woman lay completely still. Blood pooled beneath her body. Cole knelt and examined her. Her eyes stared at nothing. Someone had stopped her heart. The grandfather clock struck twelve. Footsteps echoed from above him. Cole drew his cold pistol. "Who's there?" he called out. Only silence answered his question. He climbed the creaking stairs. Every door remained tightly shut. Then one slowly swung open. A figure stood waiting silently. "You found me," she whispered. Cole recognized that familiar voice. The dead woman's identical twin.
created_at"2026-06-01T12:10:26.9Z" 6/1/2026, 12:10:26 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2923
moderation_latency(null)
generation_time6878
tokens_prompt46
tokens_completion244
native_tokens_prompt60
native_tokens_completion307
native_tokens_completion_images(null)
native_tokens_reasoning39
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"
usage0.007975
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
is_byokfalse
latency10046
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status504
1
endpoint_id"c17fb1eb-dbda-4889-971f-1f15f517da90"
id"189309da-20a7-42a2-af27-bc41bec1d414"
is_byokfalse
latency1466
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780315826-fZO92cTC3LnRjpssKNTr"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780315826-woVNpwXOee2UjmYjEjVG"
upstream_id"189309da-20a7-42a2-af27-bc41bec1d414"
total_cost0.007975
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences21
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205