Run: 2026-07-01-01KWE9Y22Z73DT1KDNXJCBBSHB

Run Details

Model:
Claude Sonnet 5 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
9.6s
Cost:
$0.008260
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 hard on Blackwood. The old house stood silent. Detective Sarah Grant arrived slowly. She noticed the broken window. Something felt terribly, deeply wrong. A scream echoed through darkness. Sarah drew her service weapon. The door creaked open slowly. Inside, she found the body. Lord Blackwood lay there, dead. Blood pooled beneath his body. Sarah's mind raced with questions. Who could commit this crime? The investigation had just begun.
created_at"2026-07-01T07:40:12.265Z" 7/1/2026, 7:40:12 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5187
moderation_latency(null)
generation_time9599
tokens_prompt46
tokens_completion176
native_tokens_prompt60
native_tokens_completion814
native_tokens_completion_images(null)
native_tokens_reasoning64
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"
service_tier"default"
usage0.00826
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_015QktauhMP8QjPTiEkBSCkR"
is_byokfalse
latency2360
model_permaslug"anthropic/claude-sonnet-5-20260630"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.17.0; linux; x64))"
http_referer(null)
request_id"req-1782891612-uoJcsyaM6sWqhU6cCSTW"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891612-ImFmamJt6NLjN6QX4YVG"
upstream_id"msg_015QktauhMP8QjPTiEkBSCkR"
total_cost0.00826
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences14
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135