Run: 2026-06-01-01KT1HWFZ7NDRRZZJE7QWQS22P

Run Details

Duration:
19.3s
Cost:
$0.007750
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
95.24% 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 inside slowly. Her flashlight cut the darkness. A body lay nearby cold. Blood pooled across marble floors. The victim wore expensive clothes. Someone had locked all doors. Mara examined the lifeless face. Recognition struck her like lightning. This man knew her secrets. Now those secrets died too. She knelt beside the corpse. A note rested under him. The handwriting looked strangely familiar. Three words chilled her bones. "You are next, Detective." Thunder cracked outside the windows. Mara reached for her weapon. Footsteps echoed down dark hallways. The killer remained inside still. Her heartbeat quickened with fear. Tonight someone else would die.
created_at"2026-06-01T12:17:38.286Z" 6/1/2026, 12:17:38 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5071
moderation_latency(null)
generation_time9255
tokens_prompt46
tokens_completion215
native_tokens_prompt60
native_tokens_completion298
native_tokens_completion_images(null)
native_tokens_reasoning37
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"
usage0.00775
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"b2b8838c-7a3c-4cc0-8b24-41dcec8e5bb4"
is_byokfalse
latency4054
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-1780316258-4sm0VF1Ua04PIs76yVem"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780316258-FRF0VraxtSHJ8z2x5gt4"
upstream_id"b2b8838c-7a3c-4cc0-8b24-41dcec8e5bb4"
total_cost0.00775
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
95.24% Matches word count n/a
neededCleanfalse
sentences21
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
159
165
175
185
195
205