Run: 2026-04-24-01KQ0GGRF4QMZ9V0M5YQZNJCGV

Run Details

Duration:
8.4s
Cost:
$0.030075
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 hard against the old mansion's tall windows. Detective Sarah Pike arrived just before the clock struck midnight. A butler met her at the door without a word. His pale hands trembled as he took her wet coat. Inside, the guests stood frozen around a body on marble. Lord Ashworth lay dead beneath the great crystal chandelier above. Blood pooled slowly across the checkered floor near his hand. Seven faces turned toward Sarah, each one hiding something terrible. She scanned the room, noting every detail in cold silence. Someone here had killed him within the past thirty minutes. The front door was locked; no one could have left. Sarah removed her gloves and finally broke the heavy silence. Nobody leaves this house until I learn the whole truth.
created_at"2026-04-24T19:47:25.287Z" 4/24/2026, 7:47:25 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2219
moderation_latency(null)
generation_time8330
tokens_prompt46
tokens_completion302
native_tokens_prompt65
native_tokens_completion1190
native_tokens_completion_images(null)
native_tokens_reasoning111
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"
usage0.030075
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"006be499-60ba-46a6-a37a-f6ade2cfddda"
is_byokfalse
latency682
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-1777060045-1sgXpuGmzVnvHP29Jd30"
session_id(null)
api_type"completions"
id"gen-1777060045-IkV4UFHjrcfHkX58ZBi2"
upstream_id"006be499-60ba-46a6-a37a-f6ade2cfddda"
total_cost0.030075
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
sentences13
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210