Run: 2026-07-25-01KYCRFDZSNV2VYWSD73E4M0PG

Run Details

Duration:
18.4s
Cost:
$0.042475
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain struck the greenhouse glass like fists that demanded entry. Inspector Aldous Vane stood beneath the orchids and counted breaths. The body lay among shattered pots, face turned toward heaven. Lady Hargrave's gardener had died holding a single white bloom. Someone had arranged him carefully, which meant someone felt sorry. Vane knelt, ignoring the wet soil staining his good trousers. The wound was small, precise, and hidden beneath the collar. No struggle marked the floor, no defensive bruising, no doubt. Behind him, the housekeeper wept into a starched linen apron. She claimed she found him at dawn while locking gates. But the gates were already locked, and Vane noticed that. Outside, four guests waited in the drawing room, drinking sherry. Each of them had slept badly; each of them lied. Vane rose slowly and brushed the dirt from his knees. Murder, he thought, always begins long before the final breath.
created_at"2026-07-25T13:47:16.354Z" 7/25/2026, 1:47:16 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4411
moderation_latency(null)
generation_time18288
tokens_prompt46
tokens_completion415
native_tokens_prompt60
native_tokens_completion1687
native_tokens_completion_images(null)
native_tokens_reasoning184
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"
usage0.042475
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsxnpQy1xZzRiyv1beY"
is_byokfalse
latency1307
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-1784987236-urcNOFb95meJvgebBqF3"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784987236-D8sNk4KfbcuhsP8WNQgi"
upstream_id"msg_011CdNsxnpQy1xZzRiyv1beY"
total_cost0.042475
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
100.00% Matches word count n/a
neededCleanfalse
sentences15
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410