NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-09-23-01M37PMD7NYD2FCBGNDYQX07BW
Run Details
Model:
Claude Opus 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 200 words with 10% dialogue
Duration:
23.9s
Cost:
$0.044980
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
91.72%
Dialogue to Total Word Ratio
(details)
95.8576%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 10% words of dialogue between two thieves named Molly and Bill who are planning to break into a children's party to steal all the presents. Only include the prose of the scene without any markdown or commentary.
Model response
Messages
Meta
AI
Molly spread the blueprints across the hood of the van, pinning one corner with a juice box and the other with Bill's elbow. The blueprints were a crayon drawing she had lifted from the Hendersons' refrigerator, but the kid had a surprising grasp of perspective. "Bouncy castle's our entry point. Nobody suspects the bouncy castle," she said. Bill studied the drawing with the intensity of a man defusing a bomb. He had once spent six years planning a museum job and still gotten stuck in a revolving door. Tonight, the stakes were higher. Tonight, there would be a clown. "What about the clown?" he asked. Molly produced a photo of Mister Giggles, circled three times in marker. Word on the street said he'd done time. Word on the street also said he could make a balloon giraffe in under four seconds, which Molly found more concerning. Bill would pose as a late-arriving uncle. Molly would handle the piƱata as a diversion. The presents, stacked like a glittering fortress beside the cake table, would vanish into a laundry cart before anyone finished the second verse of the birthday song. Bill nodded, then raised a hand. "Do we at least get cake?"
created_at
"2026-09-23T17:57:19.238Z"
9/23/2026, 5:57:19 PM
model
"anthropic/claude-opus-5.5-20260921"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5465
moderation_latency
(null)
generation_time
23811
tokens_prompt
75
tokens_completion
585
native_tokens_prompt
95
native_tokens_completion
2230
native_tokens_completion_images
(null)
native_tokens_reasoning
1829
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"end_turn"
service_tier
"default"
usage
0.04498
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790186239-37FFuXROjAvNZMKZAuik"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790186239-BcgL6xndBkch7nmhAolr"
upstream_id
"msg_011CfLoZeskd9NpGZHZsCvtG"
provider_responses
0
endpoint_id
"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id
"msg_011CfLoZeskd9NpGZHZsCvtG"
is_byok
false
latency
1203
model_permaslug
"anthropic/claude-opus-5.5-20260921"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.04498
cache_discount
(null)
upstream_inference_cost
0
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
neededClean
false
words
200
91.72%
Dialogue to Total Word Ratio
Ratio: 15.42%, Deviation: 5.42%
neededClean
false
wordsTotal
201
wordsDialogue
31
95.8576%