Run: 2026-07-01-01KWEA3N5HKQ7GH47ZWRJ7C9P8

Run Details

Duration:
12.9s
Cost:
$0.013700
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 hammered hard against the old mansion's darkened windows tonight. Detective Sarah Miles stepped carefully through the creaking front door. She found the old butler dead beside the grand staircase. Blood pooled slowly across the polished marble floor beneath him. No weapon lay visible anywhere near the still, cold body. Three nervous guests remained upstairs, unaware of the grim discovery. Sarah closed her small notebook and studied the silent room. Someone inside this grand house had committed a terrible crime.
created_at"2026-07-01T07:43:15.644Z" 7/1/2026, 7:43:15 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3819
moderation_latency(null)
generation_time12815
tokens_prompt46
tokens_completion204
native_tokens_prompt60
native_tokens_completion1358
native_tokens_completion_images(null)
native_tokens_reasoning73
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"
usage0.0137
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01LWCcB8THdqULdfhqy9Sy1Y"
is_byokfalse
latency1706
model_permaslug"anthropic/claude-sonnet-5-20260630"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.17.0; linux; x64))"
http_referer(null)
request_id"req-1782891795-7h8rSw0MkkPNlMarNm4f"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891795-voYGcUn1dEM7kB8eKmaM"
upstream_id"msg_01LWCcB8THdqULdfhqy9Sy1Y"
total_cost0.0137
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
sentences8
wordCounts
010
110
210
310
410
510
610
710