Run: 2026-04-24-01KQ0G5MYNRCD4387B0SACNPJC

Run Details

Duration:
7.6s
Cost:
$0.027275
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 the cobblestones outside the old Ashworth estate tonight. Detective Mara Voss arrived just before the clock struck midnight. A butler met her at the iron gate, visibly trembling. He whispered that the master lay dead inside the library. Mara followed him through corridors lit by flickering gas lamps. Portraits of stern ancestors watched her pass without a sound. The library door stood ajar, bleeding warm amber light outward. Lord Ashworth slumped across his desk, a letter clenched tight. Crimson spread slowly beneath him, staining papers and pale fingers. Mara drew her notebook and began counting the quiet witnesses.
created_at"2026-04-24T19:41:21.241Z" 4/24/2026, 7:41:21 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2503
moderation_latency(null)
generation_time7483
tokens_prompt46
tokens_completion260
native_tokens_prompt65
native_tokens_completion1078
native_tokens_completion_images(null)
native_tokens_reasoning100
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"
usage0.027275
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"c7095976-9e29-40ea-8c5c-8557255b105b"
is_byokfalse
latency651
model_permaslug"anthropic/claude-4.7-opus-20260416"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777059681-FBF0hmcC7Os0VwIpHVun"
session_id(null)
api_type"completions"
id"gen-1777059681-vMfArgnzqc6e5sZ78R3S"
upstream_id"c7095976-9e29-40ea-8c5c-8557255b105b"
total_cost0.027275
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910