Run: 2026-07-01-01KWE8RJFC211S5KRJ71WBF2V6

Run Details

Duration:
6.6s
Cost:
$0.002340
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
98.95% 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
# The Last Guest Rain hammered the old mansion. Lightning cracked across dark skies. Eight guests arrived for dinner. Nobody expected a ninth guest. The host sat alone waiting. Candles flickered on the table. A clock struck twelve times. Then the lights went dark. Someone screamed from the study. The butler rushed to check. He found the door locked. Blood pooled beneath the doorframe. The guests gathered in silence. Nobody wanted to go inside. Finally, someone broke the lock. The host lay on floor. His eyes stared at nothing. A knife rested near him. Rain kept hammering the windows. The killer stood among them.
created_at"2026-07-01T07:19:43.864Z" 7/1/2026, 7:19:43 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1903
moderation_latency(null)
generation_time6559
tokens_prompt46
tokens_completion157
native_tokens_prompt60
native_tokens_completion222
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"
service_tier"default"
usage0.00234
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01SfDEzp9qeiraYwXcry9uVv"
is_byokfalse
latency1903
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-1782890383-4sTXKiZj850vd0DWOktX"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890383-5qTJOCdaFpHYy56cpJ5g"
upstream_id"msg_01SfDEzp9qeiraYwXcry9uVv"
total_cost0.00234
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
98.95% Matches word count n/a
neededCleanfalse
sentences21
wordCounts
04
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205