Run: 2026-10-09-01M4FXVR6BK7CK1SB06DGD7GYR

Run Details

Duration:
7.2s
Cost:
$0.000576
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 Voss arrived late. Blood pooled beneath the desk. Victim Edward Hale lay motionless. Glasses dangled from his nose. Officer Park handed her gloves. "Nobody leaves until I finish." Every guest held a motive. The study door was locked. Only three keys existed, apparently.
created_at"2026-10-09T08:53:17.142Z" 10/9/2026, 8:53:17 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2820
moderation_latency(null)
generation_time7210
tokens_prompt46
tokens_completion191
native_tokens_prompt62
native_tokens_completion1139
native_tokens_completion_images(null)
native_tokens_reasoning1010
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"
usage0.0005757
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791535997-hcNWog4nnowEwHFtuzTK"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791535997-JMDy7r2CyBSkqfuiQG0W"
upstream_id"msg_011CfrP27tPFc4g8VnNcJtAn"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrP27tPFc4g8VnNcJtAn"
is_byokfalse
latency745
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0005757
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
sentences10
wordCounts
05
15
25
35
45
55
65
75
85
95