Run: 2026-10-08-01M4DAJV7PZGJHKJ7PKYWDYVBT

Run Details

Model:
Claude Haiku 5.5 (Adaptive)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
6.4s
Cost:
$0.000652
Provider:
Claude Platform on AWS

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 windows relentlessly. Detective Mara Voss stared downward. Blood pooled beneath the desk. Nobody had touched the body. Who called this in tonight? Her partner Owen arrived breathless. The victim was Lydia Crane. Three guests had sworn alibis. Someone in this house lied. Mara knelt beside the body. A torn letter sat nearby. Its last line was missing. Somebody had planned this carefully.
created_at"2026-10-08T08:37:53.535Z" 10/8/2026, 8:37:53 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6327
moderation_latency(null)
generation_time6327
tokens_prompt46
tokens_completion102
native_tokens_prompt62
native_tokens_completion1291
native_tokens_completion_images(null)
native_tokens_reasoning1139
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"
usage0.0006517
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448673-wOQ39NYHQjNjuz7RbiN2"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448673-ubE94TYML0FsFA3jdMBz"
upstream_id"msg_011CfpU37yCFzHeF4vgGPK8U"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpU37yCFzHeF4vgGPK8U"
is_byokfalse
latency795
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0006517
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125