Run: 2026-06-01-01KT1HVKZ6RVJ2YMAX45HX8Q63

Run Details

Duration:
21.3s
Cost:
$0.007250
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
94.74% 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 hammered the old mansion. Detective Mara stepped through doors. The body lay face down. Blood pooled across marble tiles. Her flashlight swept the room. Shattered glass glittered like diamonds. A clock had stopped ticking. Someone wanted time frozen forever. The victim wore expensive clothes. His pockets held no wallet. Mara knelt beside the corpse. Cold fingers clutched a note. She carefully unfolded the paper. Three words stared back darkly. "You know my secret." Thunder cracked outside the windows. Mara felt eyes watching her. The killer remained quite close. Every shadow seemed to breathe. This case would change everything.
created_at"2026-06-01T12:17:09.611Z" 6/1/2026, 12:17:09 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7728
moderation_latency(null)
generation_time11206
tokens_prompt46
tokens_completion202
native_tokens_prompt60
native_tokens_completion278
native_tokens_completion_images(null)
native_tokens_reasoning42
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"
usage0.00725
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
is_byokfalse
latency10046
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status504
1
endpoint_id"c17fb1eb-dbda-4889-971f-1f15f517da90"
id"579a995e-534f-4cc4-994c-547445044c39"
is_byokfalse
latency6788
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780316229-1gHXoPaG70enNvYVFBIH"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780316229-XullGpOfha0Pzpc4BAVl"
upstream_id"579a995e-534f-4cc4-994c-547445044c39"
total_cost0.00725
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
94.74% Matches word count n/a
neededCleanfalse
sentences19
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
149
155
165
175
185