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Run: 2026-06-01-01KT1HBZ3E92YWWHRFJMR59E4R
Run Details
Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Dialogue tags
Scenario:
Write 200 words with 50% dialogue
Duration:
10.6s
Cost:
$0.014415
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
11.00%
Dialogue to Total Word Ratio
(details)
55.4988%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 50% 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 crouched behind the hedge, binoculars trained on the bouncy castle. Bill chewed nervously on a stolen party balloon. "There must be forty presents in that pile," Molly whispered. "We grab them during the magic show." "What about the clown?" Bill asked. "What about him?" "Clowns terrify me, Molly. You know this." She lowered the binoculars and stared at him. "We've robbed three banks and an armored truck. You're scared of a man in oversized shoes?" "It's the painted smile. It's unnatural." A child shrieked with laughter somewhere beyond the fence, and Bill flinched violently, crushing the balloon. "Focus," Molly hissed. "Twelve o'clock, parents bring out the cake. Everyone's distracted singing. We move in, fill the duffel bags, and exit through the petting zoo." "There's a petting zoo?" "Don't get attached to the goats, Bill." He scribbled something in a tiny notebook decorated with cartoon ponies. Molly noticed and frowned. "Where did you get that?" "The gift table. It's reconnaissance." "It's a four-year-old's diary." Bill closed it guiltily. "She wrote that she wants a pony for Christmas. It's actually quite moving." Molly snatched the notebook and tossed it aside. "We're professionals. Now grab the chloroform and the juice boxes."
created_at
"2026-06-01T12:08:36.727Z"
6/1/2026, 12:08:36 PM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3038
moderation_latency
(null)
generation_time
10598
tokens_prompt
77
tokens_completion
398
native_tokens_prompt
93
native_tokens_completion
558
native_tokens_completion_images
(null)
native_tokens_reasoning
55
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
0.014415
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_01Jb5DD381HCdyw6hjSs9rGA"
is_byok
false
latency
1186
model_permaslug
"anthropic/claude-4.8-opus-20260528"
provider_name
"Anthropic"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer
(null)
request_id
"req-1780315716-MZbN78U41RaMhaJI0xSU"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780315716-1pXpxBAdBc8jNxkOoi23"
upstream_id
"msg_01Jb5DD381HCdyw6hjSs9rGA"
total_cost
0.014415
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
words
199
11.00%
Dialogue to Total Word Ratio
Ratio: 62.19%, Deviation: 12.19%
neededClean
false
wordsTotal
201
wordsDialogue
125
55.4988%