Run: 2026-10-08-01M4D9W8MFVGY38MWV6V37SX38

Run Details

Model:
Claude Haiku 5.5 (Adaptive)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
7.7s
Cost:
$0.000793
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 lashed the old windows. Detective Quill arrived after midnight. Lord Ashford sprawled beside hearth. Nobody had heard the scream. Six suspects waited in silence. Each one held a secret. Mara noticed the muddy footprints. They led toward the study. The study door was locked. Someone had bolted it shut. Quill smiled faintly at nothing. Murder, she knew, was patient. The killer was still here.
created_at"2026-10-08T08:25:33.791Z" 10/8/2026, 8:25:33 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7495
moderation_latency(null)
generation_time7495
tokens_prompt46
tokens_completion103
native_tokens_prompt62
native_tokens_completion1573
native_tokens_completion_images(null)
native_tokens_reasoning1415
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"
usage0.0007927
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791447933-N99uf5XLthJm73vwbk86"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791447933-yjyYd3gCvVP10inioRsF"
upstream_id"msg_011CfpT6dVSEh9u3dWSYCLW9"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpT6dVSEh9u3dWSYCLW9"
is_byokfalse
latency1274
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0007927
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