Run: 2026-05-29-01KSSJYYPAXFZ1Y76T88PEDFW1

Run Details

Duration:
10.6s
Cost:
$0.014565
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.92% Matches word count (details)
98.95% Dialogue to Total Word Ratio (details)
99.4354% 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

AI
Molly crouched behind the hedge, binoculars trained on the bouncy castle wobbling in the suburban backyard. Streamers fluttered. Balloons bobbed. Somewhere inside that pastel fortress lay a mountain of gift-wrapped treasure, and she intended to claim every glittering box of it. Bill adjusted his clown wig, sweating beneath the polyester. He had insisted the disguise was foolproof, despite the fact that his fake nose kept sliding into his mustache, which was also fake, and also sliding. He looked less like a party entertainer and more like a hostage situation. "The cake table's our extraction point," Molly whispered. Bill nodded gravely, then squeezed his honking nose for confidence. The plan was elegant in its simplicity. Bill would distract the children with balloon animals while Molly slipped through the back gate, loaded the presents into a deflated piƱata, and vanished before the candles were lit. Twelve toddlers stood between them and untold riches in action figures and pony-themed merchandise. "Remember," she added, "no eye contact with the birthday girl." A whistle blew. The face-painting station opened. Somewhere a parent uncorked sparkling cider, and the operation commenced. Bill stumbled forward into the fray, honking, juggling, terrified, while Molly melted into the shrubbery, grinning like a professional.
created_at"2026-05-29T10:02:32.017Z" 5/29/2026, 10:02:32 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2856
moderation_latency(null)
generation_time10616
tokens_prompt77
tokens_completion400
native_tokens_prompt93
native_tokens_completion564
native_tokens_completion_images(null)
native_tokens_reasoning54
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.014565
router(null)
provider_responses
0
endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_01RZzt5K9Nhsnb7ebo1HoMi7"
is_byokfalse
latency1025
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780048952-NAK9TqYiVaUt0mLFzixg"
session_id(null)
api_type"completions"
id"gen-1780048952-vS0l8I9dxzslhDAVAozK"
upstream_id"msg_01RZzt5K9Nhsnb7ebo1HoMi7"
total_cost0.014565
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
99.92% Matches word count n/a
neededCleanfalse
words203
98.95% Dialogue to Total Word Ratio
Ratio: 6.80%, Deviation: 3.20%
neededCleanfalse
wordsTotal206
wordsDialogue14
99.4354%