Run: 2026-07-01-01KWEAADWRD9KRKK5F94SGAPCE

Run Details

Duration:
6.6s
Cost:
$0.002510
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
95.00% 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
# The Last Dinner Party Rain pounded against the windows. Margaret checked her silver watch. Six guests remained at dinner. Nobody spoke about the letter. The candles flickered without warning. James refused to touch dessert. Someone had locked the door. Sarah noticed the missing knife. Thunder crashed above the mansion. The lights suddenly went dark. A scream pierced the silence. When the candles relit slowly, blood pooled beneath the table. Richard lay motionless on floor. Everyone stared at each other. The killer sat among them. Nobody moved from their seats. Margaret's watch had stopped ticking. Outside, the storm grew worse. Inside, seven suspects remained trapped.
created_at"2026-07-01T07:46:57.572Z" 7/1/2026, 7:46:57 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2158
moderation_latency(null)
generation_time6532
tokens_prompt46
tokens_completion172
native_tokens_prompt60
native_tokens_completion239
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"
usage0.00251
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_012DExMeEWXB8fBKWxxsnhfq"
is_byokfalse
latency2158
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-1782892017-UMAfJIiqzpwsRO8F9xom"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782892017-9WpTXK988OeSzrdtlc70"
upstream_id"msg_012DExMeEWXB8fBKWxxsnhfq"
total_cost0.00251
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
95.00% Matches word count n/a
neededCleanfalse
sentences20
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
1210
135
145
155
165
175
185
195