Run: 2026-02-18-01KHQ9152Y97Y15QP7TYKT5X62

Run Details

Model:
Claude Sonnet 4.6
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
2.6s
Cost:
$0.001137
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 arrived quite late. A body lay perfectly still. Blood stained the white carpet. No one heard the shot. She knelt down very slowly. The victim clutched something tightly. His eyes remained wide open. Sarah called for backup immediately. This case felt deeply wrong.
created_at"2026-02-18T02:24:58.032866+00:00" 2/18/2026, 2:24:58 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency444
moderation_latency(null)
generation_time2354
tokens_prompt46
tokens_completion78
native_tokens_prompt44
native_tokens_completion67
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"
usage0.001137
router(null)
provider_responses
0
id"msg_018iYohmssHHNcEeifQuwsaL"
status200
is_byokfalse
latency444
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381495-5J3FReJfF6Nndkd8KOKk"
upstream_id"msg_018iYohmssHHNcEeifQuwsaL"
total_cost0.001137
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