Run: 2026-04-24-01KQ0G10V9Q5JR9YBDZE6RYVE4

Run Details

Duration:
7.2s
Cost:
$0.027100
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 mansion's tall stained windows. Inside, the grandfather clock struck midnight with a hollow chime. Detective Marlowe stepped carefully over the cold marble entrance floor. A single candle flickered beside the body on the rug. Lord Ashford lay motionless, his pale hand clutching a letter. Blood pooled slowly beneath him, staining the ancient Persian weave. Five guests watched silently from the shadows of the staircase. Each face wore the same carefully rehearsed expression of shock. Marlowe knelt down, noting the faint scent of bitter almonds. Someone here had planned this murder with terrible, patient precision.
created_at"2026-04-24T19:38:49.581Z" 4/24/2026, 7:38:49 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2521
moderation_latency(null)
generation_time7096
tokens_prompt46
tokens_completion279
native_tokens_prompt65
native_tokens_completion1071
native_tokens_completion_images(null)
native_tokens_reasoning116
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"
usage0.0271
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"5f7ea800-6b01-4057-9705-8188134bcd02"
is_byokfalse
latency1805
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-1777059529-ComsleptWuvvjlTTiOhR"
session_id(null)
api_type"completions"
id"gen-1777059529-AL7UypqxpmGNn07pcmIi"
upstream_id"5f7ea800-6b01-4057-9705-8188134bcd02"
total_cost0.0271
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