Run: 2026-07-01-01KWE8Q30BYNM39Z6606VN41RA

Run Details

Duration:
11.1s
Cost:
$0.012040
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
The old mansion stood silent beneath a heavy grey sky. Detective Hale arrived just as the storm finally began breaking. A maid's scream suddenly echoed through the cold marble hallway. She had found the master's body cold near the fireplace. Blood pooled slowly across the antique Persian rug beneath him. No weapon lay visible anywhere within the dim candlelit room. Hale knelt down, examining the wound with practiced careful eyes. Someone in this house, he thought, held a terrible secret.
created_at"2026-07-01T07:18:55.394Z" 7/1/2026, 7:18:55 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3627
moderation_latency(null)
generation_time10914
tokens_prompt46
tokens_completion206
native_tokens_prompt60
native_tokens_completion1192
native_tokens_completion_images(null)
native_tokens_reasoning83
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"
usage0.01204
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_014DC3AHq5cZXXrDRme5Bojz"
is_byokfalse
latency1552
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-1782890335-hJKcwxvAFK5PXFXqIZ79"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890335-zbhIAiIiSwz8U6WzZP4E"
upstream_id"msg_014DC3AHq5cZXXrDRme5Bojz"
total_cost0.01204
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