Run: 2026-10-08-01M4DA33RMB915T2D2AT3QM07M

Run Details

Duration:
7.9s
Cost:
$0.000628
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 old windows. Inspector Harlow shook off water. The body waited upstairs quietly. Lady Eleanor Vance was dead. Her gloves were still on. A teacup sat beside her. Three guests stood frozen below. Nobody dared to speak first. Then the clock struck midnight. Every single suspect was lying. Harlow noticed one missing detail. The murder weapon was gone. Someone in this house lied.
created_at"2026-10-08T08:29:17.994Z" 10/8/2026, 8:29:17 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2314
moderation_latency(null)
generation_time7867
tokens_prompt46
tokens_completion282
native_tokens_prompt62
native_tokens_completion1243
native_tokens_completion_images(null)
native_tokens_reasoning1084
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"
usage0.0006277
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448158-DlFz1I5b0irszj6jahKp"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448158-1xpw2AprDL5oSQRi23H6"
upstream_id"msg_011CfpTP7enjjhtLZKUr8Cdd"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTP7enjjhtLZKUr8Cdd"
is_byokfalse
latency715
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0006277
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