Run: 2026-07-25-01KYCRPABA3GF1AEWBXQ8YF3A8

Run Details

Duration:
18.6s
Cost:
$0.042725
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
98.15% 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 the greenhouse roof like impatient fingers demanding entry. Detective Inspector Maren Holt stepped carefully around the shattered glass. The body lay among the orchids, face turned politely away. Sir Edmund Vale had died holding a single white rose. Nobody in this house grew roses, Maren noted with interest. Four guests waited in the drawing room, drinking cold tea. Each one had lied already, though she couldn't prove it. The gardener claimed the doors were locked from within, always. Yet someone had walked out leaving footprints in wet soil. Maren crouched, measuring the print against her own small hand. Whoever killed him had feet smaller than a grown child's. Behind her, the greenhouse door clicked shut, then locked softly. Maren straightened slowly, keeping her breathing shallow and completely silent. Somewhere among the orchids, someone else was breathing too.
created_at"2026-07-25T13:51:02.002Z" 7/25/2026, 1:51:02 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3619
moderation_latency(null)
generation_time18506
tokens_prompt46
tokens_completion391
native_tokens_prompt60
native_tokens_completion1697
native_tokens_completion_images(null)
native_tokens_reasoning168
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"
usage0.042725
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNtFRqaWAXEwqDHE4qWh"
is_byokfalse
latency1424
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-1784987462-fuiGULtZRzDUOETuCqaU"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784987462-QvISwUUpq64Vt1r8QpTS"
upstream_id"msg_011CdNtFRqaWAXEwqDHE4qWh"
total_cost0.042725
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
98.15% Matches word count n/a
neededCleanfalse
sentences14
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
139