Run: 2026-02-18-01KHQ92G2SVQYAMV97EVBWB306

Run Details

Model:
Claude Sonnet 4.6
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
2.3s
Cost:
$0.001122
Provider:
Anthropic

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 without mercy. Detective Sarah found the body. Blood stained the marble floor. Nobody heard the fatal shot. A candle burned nearby slowly. The mansion held dark secrets. Sarah knelt beside the man. His eyes were still open. A rose lay beside him. Someone had planned this carefully.
created_at"2026-02-18T02:25:41.614897+00:00" 2/18/2026, 2:25:41 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency606
moderation_latency(null)
generation_time2229
tokens_prompt46
tokens_completion74
native_tokens_prompt44
native_tokens_completion66
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.001122
router(null)
provider_responses
0
id"msg_01X7LuCN7yXmLwPJcmSFmHum"
status200
is_byokfalse
latency606
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381538-KQ9qDDHI5gK6q5Z17LCj"
upstream_id"msg_01X7LuCN7yXmLwPJcmSFmHum"
total_cost0.001122
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

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