Run: 2026-04-24-01KQ0G2429K684C8G6BA8XPZ7G

Run Details

Duration:
9.0s
Cost:
$0.033475
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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The rain fell hard against the windows of Ashcroft Manor, drumming a restless rhythm that nobody inside seemed to notice. Detective Marlowe stood beside the body, his coat dripping steadily onto the Persian rug beneath the dead man's outstretched hand. Lord Ashcroft had been stabbed precisely three times, each wound placed with the careful intention of a surgeon's steady hand. Six guests waited silently in the drawing room, each clutching a drink and harboring a secret worth killing a man. Marlowe cleared his throat once, opened his small leather notebook, and prepared to begin the longest night of his career.
created_at"2026-04-24T19:39:25.645Z" 4/24/2026, 7:39:25 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8016
moderation_latency(null)
generation_time8915
tokens_prompt46
tokens_completion300
native_tokens_prompt65
native_tokens_completion1326
native_tokens_completion_images(null)
native_tokens_reasoning145
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"
usage0.033475
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"7164bf22-4263-464c-a86e-efdca88015fd"
is_byokfalse
latency668
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-1777059565-c0xg220MO9bO0focSpH9"
session_id(null)
api_type"completions"
id"gen-1777059565-jlA4e2g3FwIS6vPWsVpg"
upstream_id"7164bf22-4263-464c-a86e-efdca88015fd"
total_cost0.033475
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
sentences5
wordCounts
020
120
220
320
420