Run: 2026-04-24-01KPZTXXNWAN6XB7C6X62G92GZ

Run Details

Model:
Claude Opus 4.7
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
3.6s
Cost:
$0.004725
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain fell on Blackwood Manor. Eleanor found the body first. Lord Ashford lay face down. Blood pooled beneath his chest. His eyes stared at nothing. A silver dagger glinted nearby. The library door stood open. Footprints led toward the garden. Eleanor screamed into the night. Servants came running down stairs. Nobody touched the cooling corpse. Thunder cracked above the chimney. Someone here had killed him. Every guest became a suspect. The investigation would start tomorrow.
created_at"2026-04-24T13:30:07.944Z" 4/24/2026, 1:30:07 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency893
moderation_latency(null)
generation_time3484
tokens_prompt46
tokens_completion120
native_tokens_prompt65
native_tokens_completion176
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.004725
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"e7aa8406-5a19-42d6-b14d-5a0819b5b6da"
is_byokfalse
latency893
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-1777037407-6W0SnTwsSeYy6VdeDQAv"
session_id(null)
api_type"completions"
id"gen-1777037407-mjJrkRqvkY8yK4K41nHH"
upstream_id"e7aa8406-5a19-42d6-b14d-5a0819b5b6da"
total_cost0.004725
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
sentences15
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145