Run: 2026-04-24-01KPZV3CHBXWMBDHRXYMWQ6KJ1

Run Details

Model:
Claude Opus 4.7
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
3.5s
Cost:
$0.005150
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 hammered the Victorian mansion. Inside, candles flickered against shadows. Lord Ashford poured his brandy. His guests laughed too loudly. Someone watched from the stairs. A clock struck midnight sharply. Glass shattered in the study. Screams erupted through the halls. Lady Margaret dropped her teacup. Blood pooled beneath the door. Detective Harlow arrived within minutes. Seven suspects stood frozen silent. Every alibi seemed perfectly rehearsed. One person was clearly lying. The killer stood among them.
created_at"2026-04-24T13:33:07Z" 4/24/2026, 1:33:07 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2108
moderation_latency(null)
generation_time3449
tokens_prompt46
tokens_completion129
native_tokens_prompt65
native_tokens_completion193
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"
usage0.00515
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"cdf141c9-ba21-4b72-b898-442569540b91"
is_byokfalse
latency2107
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-1777037587-1ZRljmi7FwePAOXA3OxI"
session_id(null)
api_type"completions"
id"gen-1777037587-XSnqPpbe1TKZbYXPTpjy"
upstream_id"cdf141c9-ba21-4b72-b898-442569540b91"
total_cost0.00515
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