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Run: 2026-09-23-01M37PNY87C6PK8GAS7J4357HZ
Run Details
Model:
Claude Opus 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 500 words with 30% dialogue
Duration:
42.9s
Cost:
$0.080740
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
99.98%
Dialogue to Total Word Ratio
(details)
99.9905%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 500 word scene that has 30% 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
The back booth of Marge's Diner smelled like burnt coffee and ambition. Molly unrolled a sheet of butcher paper across the table, pinning one corner with the ketchup bottle and the other with Bill's elbow, which he had not offered. At the center of the paper, drawn in purple crayon, was a house. Around it, in red, were dozens of tiny arrows, three circles labeled DANGER, and something that might have been a dog or a very determined potato. "Saturday, two o'clock," Molly said. "The Pemberton twins turn seven. Forty guests, maybe fifty. Every one of them carrying a gift." Bill squinted. "Is that a potato?" "It's a bouncy castle." "Why does it have teeth?" "Because it's a dragon bouncy castle, Bill. Focus." He sipped his coffee and tried to look focused, which on Bill looked a lot like mild indigestion. He had been Molly's partner for eleven years, long enough to know that her plans were brilliant, and long enough to know they always went wrong in ways no one could have predicted, including the police, who had once laughed so hard they forgot to arrest him. Molly tapped the crayon house. The presents, she explained, would be stacked on a folding table by the patio door. The parents would be distracted by the cake. The children would be distracted by the magician. And the magician, crucially, would be Bill. "No," Bill said. "You'll be brilliant." "I don't know any magic." "You made my car disappear." "That was a tow truck, and it wasn't on purpose. They also took my sandwich." She slid a paperback across the table. Its cover promised One Hundred Tricks to Amaze Any Audience. Someone had spilled grape juice on it, and the only legible trick left involved a coin, an ear, and what appeared to be a live pigeon. While Bill dazzled the room, Molly would slip in dressed as a party rental employee, load the gifts into an enormous inflatable swan, and wheel them out to the van. "Nobody questions a woman pushing a swan," Molly said. "It's the single greatest disguise in human history." Bill turned the book over. "What happens if a kid sees you?" "Kids don't count as witnesses. Nobody believes them." "What if one follows you?" "Then you do a trick." "What if the trick is the pigeon?" Molly considered this. She had not planned for the pigeon. Across the diner, the waitress refilled someone's coffee and eyed the purple dragon-potato with deep suspicion. "Fine," Molly said. "No pigeon. Just the coin." "And the ear? Whose ear?" "Your ear, Bill. Not theirs." He nodded slowly, as though this settled a great moral question. Then he pointed at a small scribble in the corner of the map, a stick figure with a cone-shaped hat and furious eyebrows. "Who's that?" Molly's jaw tightened. "Grandma Pemberton. Former prison guard. Never misses a party." Bill finished his coffee in one long, sorrowful gulp. "We're going to need a bigger swan," he said.
created_at
"2026-09-23T17:58:09.433Z"
9/23/2026, 5:58:09 PM
model
"anthropic/claude-opus-5.5-20260921"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5064
moderation_latency
(null)
generation_time
42821
tokens_prompt
75
tokens_completion
1549
native_tokens_prompt
95
native_tokens_completion
4018
native_tokens_completion_images
(null)
native_tokens_reasoning
2960
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
0.08074
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790186289-FZ8kgACX4HW8TAe7gsmd"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790186289-5vvmZngSAgRRLkibbG5r"
upstream_id
"msg_011CfLodMkDvYry9G7Tj6GjP"
provider_responses
0
endpoint_id
"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id
"msg_011CfLodMkDvYry9G7Tj6GjP"
is_byok
false
latency
1290
model_permaslug
"anthropic/claude-opus-5.5-20260921"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.08074
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
499
99.98%
Dialogue to Total Word Ratio
Ratio: 29.94%, Deviation: 0.06%
neededClean
false
wordsTotal
501
wordsDialogue
150
99.9905%