Run: 2026-06-01-01KT1J6WANAP7KK25NN32V8JV0

Run Details

Duration:
19.9s
Cost:
$0.007050
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
100.00% 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 windows. Detective Mara Cole stepped inside. The mansion smelled of death. A body lay near stairs. Blood pooled across marble floors. Her flashlight swept the room. Shadows danced along the walls. The victim wore evening clothes. Diamond cufflinks caught dim light. Someone had wanted him dead. Mara crouched beside the corpse. His eyes stared at nothing. A single gunshot wound showed. No weapon lay in sight. The killer had cleaned up. Mara noticed muddy boot prints. They led toward the library. Thunder cracked outside the windows. She drew her service weapon. The hunt had truly begun.
created_at"2026-06-01T12:23:18.618Z" 6/1/2026, 12:23:18 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3430
moderation_latency(null)
generation_time9829
tokens_prompt46
tokens_completion193
native_tokens_prompt60
native_tokens_completion270
native_tokens_completion_images(null)
native_tokens_reasoning40
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"
usage0.00705
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
is_byokfalse
latency10080
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status504
1
endpoint_id"c17fb1eb-dbda-4889-971f-1f15f517da90"
id"a835a0c7-5203-48a3-a796-9200283f61f7"
is_byokfalse
latency1955
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-1780316598-1P2dcE2L0HWfVCeNCo7s"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780316598-85iKJQBvB4da6m09z7fv"
upstream_id"a835a0c7-5203-48a3-a796-9200283f61f7"
total_cost0.00705
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences20
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195