Run: 2026-07-25-01KYCPVHD975PGQYJW3DJ6JXBJ

Run Details

Duration:
9.2s
Cost:
$0.009050
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
The rain hammered the tin roof of Ashcombe Manor's conservatory. Inspector Halloran removed her hat and shook water from it. Inside, seven guests sat frozen around a long oak table. Between them lay Sir Edmund Thorne, quite thoroughly and finally dead. A silver letter opener protruded from beneath his starched collar. Nobody spoke, though somebody had certainly screamed twenty minutes prior. "Which of you found him?" Halloran asked the pale room. Six hands rose slowly, hesitantly, then lowered again in confusion. The seventh guest kept both hands hidden beneath the tablecloth. Halloran noted this carefully and said absolutely nothing about it. Lightning flashed, illuminating the wine glasses, each one drained empty. Except one, which remained full, untouched, waiting for someone else. "Nobody leaves this house tonight," she said, closing the door. Somewhere upstairs, a floorboard creaked beneath the weight of secrets.
created_at"2026-07-25T13:18:55.919Z" 7/25/2026, 1:18:55 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2300
moderation_latency(null)
generation_time9033
tokens_prompt46
tokens_completion237
native_tokens_prompt60
native_tokens_completion350
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.00905
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNqoTN9N4BnPhGWg2QvW"
is_byokfalse
latency2300
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-1784985535-p8WdnMI6ptLxNKctD3CG"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784985535-t5yGGJHc1ugXEhTYtVdE"
upstream_id"msg_011CdNqoTN9N4BnPhGWg2QvW"
total_cost0.00905
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
311
410
510
610
710
810
910
1010
1110
1210
1310