Run: 2026-09-23-01M37P2MCSXNWB48MNK6X1J3Z1

Run Details

Duration:
14.3s
Cost:
$0.018288
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 manor. Lightning split the black sky. Inside, the clock struck midnight. Lady Ashford screamed from upstairs. Everyone rushed toward the library. The door stood slightly open. Candlelight flickered across the floor. Lord Ashford lay perfectly still. A silver knife gleamed nearby. Blood pooled beneath his chest. The butler dropped his tray. "Nobody leaves," the colonel growled. The storm blocked every road. Seven guests exchanged nervous glances. One of them was lying. Detective Mara Quinn stepped forward. She studied the dead man. His left hand clutched something. It was a torn photograph. Mara turned to face them. "The killer is among us."
created_at"2026-09-23T17:47:36.748Z" 9/23/2026, 5:47:36 PM
model"anthropic/claude-opus-5.5-20260921"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4853
moderation_latency(null)
generation_time14295
tokens_prompt46
tokens_completion343
native_tokens_prompt62
native_tokens_completion902
native_tokens_completion_images(null)
native_tokens_reasoning659
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"
usage0.018288
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790185656-zVZWnhugnDZRUzana9Go"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790185656-505WTZz1Qxaa7OX3IbnY"
upstream_id"msg_011CfLnpimxFs8uRB6cMkhMN"
provider_responses
0
endpoint_id"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id"msg_011CfLnpimxFs8uRB6cMkhMN"
is_byokfalse
latency1239
model_permaslug"anthropic/claude-opus-5.5-20260921"
provider_name"Claude Platform on AWS"
status200
total_cost0.018288
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
sentences21
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205