Run: 2026-10-08-01M4DA5032YABC2YVPE7FS03G8

Run Details

Duration:
4.6s
Cost:
$0.000462
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
The rain fell hard tonight. Detective Mara Keene arrived late. Blood pooled beneath the desk. Victim Edward Lowell lay motionless. A single glass sat untouched. Officers stood in silent clusters. Mara knelt beside the body. Her gloves snapped on sharply. The room felt wrong somehow. The window had been locked. Yet a draft whispered through. Someone in this house lied.
created_at"2026-10-08T08:30:19.757Z" 10/8/2026, 8:30:19 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4565
moderation_latency(null)
generation_time4565
tokens_prompt46
tokens_completion96
native_tokens_prompt62
native_tokens_completion912
native_tokens_completion_images(null)
native_tokens_reasoning761
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"
usage0.0004622
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448219-HJzYPbTz9Wve83hDycEJ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448219-KU2sUJ7cIXvTDtywDgAK"
upstream_id"msg_011CfpTTfzpyyjd9N5ifpLZv"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTTfzpyyjd9N5ifpLZv"
is_byokfalse
latency715
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0004622
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
sentences12
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115