Run: 2026-02-24-01KJ8VMJGQE06S6ERTG8N5BHS8

Run Details

Model:
Claude Sonnet 4.6 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
6.4s
Cost:
$0.007338
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
Rain fell on Blackwood Manor. The lights flickered twice tonight. Nobody heard the sharp scream. Lord Ashford lay perfectly still. His wine glass was shattered. Blood stained the wooden floor. Detective Cross arrived at midnight. She studied every silent face. Each guest looked deeply guilty. Someone in this room lied.
created_at"2026-02-24T22:17:10.944Z" 2/24/2026, 10:17:10 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency801
moderation_latency(null)
generation_time6282
tokens_prompt46
tokens_completion336
native_tokens_prompt61
native_tokens_completion477
native_tokens_completion_images(null)
native_tokens_reasoning256
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"
usage0.007338
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_01Q1gshypjo7sgwx9Qkx2yRg"
is_byokfalse
latency799
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771971430-EwqKRGNL9tMbNeXYs6KS"
upstream_id"msg_01Q1gshypjo7sgwx9Qkx2yRg"
total_cost0.007338
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