Run: 2026-04-24-01KQ0G9QZ1VH4NBWHC2BDWCCYX

Run Details

Duration:
7.7s
Cost:
$0.026400
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 manor's tall windows. Detective Harlow stepped slowly through the creaking oak front door. Inside, six guests waited quietly beneath a flickering crystal chandelier. The host lay dead beside an overturned glass of wine. His left hand clutched a torn page from someone's diary. Harlow knelt down and studied the crimson stain spreading slowly. Every guest denied hearing a single sound before the scream. Yet someone standing here had clearly committed the awful deed. Harlow stood, turned, and smiled without any warmth whatsoever, waiting. Someone in this room would confess before the night ended.
created_at"2026-04-24T19:43:35.398Z" 4/24/2026, 7:43:35 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2709
moderation_latency(null)
generation_time7606
tokens_prompt46
tokens_completion244
native_tokens_prompt65
native_tokens_completion1043
native_tokens_completion_images(null)
native_tokens_reasoning85
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"
usage0.0264
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"c3e767a8-6e30-4b2d-809c-e26b5e6f354d"
is_byokfalse
latency894
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-1777059815-fO9dhnVvfvuVnfbDEbhd"
session_id(null)
api_type"completions"
id"gen-1777059815-x6yhX8eCdNLOl3QtV3O2"
upstream_id"c3e767a8-6e30-4b2d-809c-e26b5e6f354d"
total_cost0.0264
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