Run: 2026-07-25-01KYCPQGG8CJC91762DM94H04V

Run Details

Duration:
9.2s
Cost:
$0.005850
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 mansion windows. Detective Vera Holt arrived late. The front door stood open. No servant came to greet. She stepped onto wet marble. Her boots left dark prints. A candelabra lay overturned nearby. Wax had pooled and hardened. The chandelier swung very slightly. Somewhere upstairs, a clock ticked. Vera called out one name. Only thunder answered her question. She climbed the curving staircase. The third step groaned loudly. On the landing, blood waited. It spelled something on wallpaper. Two letters, maybe a three. Vera photographed it without touching. The library door was locked. Behind it, someone was breathing.
created_at"2026-07-25T13:16:43.919Z" 7/25/2026, 1:16:43 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2579
moderation_latency(null)
generation_time8385
tokens_prompt46
tokens_completion160
native_tokens_prompt60
native_tokens_completion222
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.00585
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNqdo3YRZsNR3pHFC8fD"
is_byokfalse
latency2579
model_permaslug"anthropic/claude-opus-5-20260723"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784985404-fPo61L3wbIe5cYM6k5XN"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784985404-jCInLsS6PRpxmHZL5hvE"
upstream_id"msg_011CdNqdo3YRZsNR3pHFC8fD"
total_cost0.00585
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

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