Run: 2026-07-01-01KWE9VGDF7JXJ7N0PECN7V80G

Run Details

Model:
Claude Sonnet 5 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
12.1s
Cost:
$0.011840
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 quiet street. A woman lay motionless there. Detective Cole knelt beside her. Blood pooled beneath her head. No weapon was ever found. Neighbors watched from dark windows. Someone had silenced her forever. Cole noticed a torn photograph. It showed two smiling faces. One face was scratched out. The rain erased any footprints. Only silence answered his questions. Something felt terribly, deeply wrong. This case would haunt him.
created_at"2026-07-01T07:38:48.637Z" 7/1/2026, 7:38:48 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4501
moderation_latency(null)
generation_time12096
tokens_prompt46
tokens_completion193
native_tokens_prompt60
native_tokens_completion1172
native_tokens_completion_images(null)
native_tokens_reasoning71
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"
usage0.01184
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01XQBxqQhGWLb2kAxuZkga5G"
is_byokfalse
latency1993
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-1782891528-Lw81H9eKluK3GmSApAoZ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891528-t7062rG6rSIDJAOE6BPI"
upstream_id"msg_01XQBxqQhGWLb2kAxuZkga5G"
total_cost0.01184
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