Run: 2026-07-01-01KWE8ZNTDQ9ZG645BXMP0B6Y3

Run Details

Duration:
15.7s
Cost:
$0.018750
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 rain fell steadily over the quiet, sleeping seaside town. Detective Sarah Mills stood silently beneath a flickering old streetlamp. A woman's body lay motionless near the old wooden pier. Her eyes stared blankly up at the dark starless sky. No one had heard a single scream that stormy night. Mills knelt down slowly, examining the scene with practiced care. Something metallic glinted faintly beside the victim's cold, still hand. This wasn't just another simple case for this detective, though. She suddenly recognized the victim as her own younger sister.
created_at"2026-07-01T07:23:36.665Z" 7/1/2026, 7:23:36 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3770
moderation_latency(null)
generation_time15612
tokens_prompt46
tokens_completion269
native_tokens_prompt60
native_tokens_completion1863
native_tokens_completion_images(null)
native_tokens_reasoning114
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"
usage0.01875
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01VnfjjoHDRVuQzU4dq5Vrwp"
is_byokfalse
latency1677
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-1782890616-csoQ5q35D046sL46RiFj"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890616-oC6sz5K1cssDqPYLB04I"
upstream_id"msg_01VnfjjoHDRVuQzU4dq5Vrwp"
total_cost0.01875
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
sentences9
wordCounts
010
110
210
310
410
510
610
710
810