Run: 2026-04-24-01KQ0G2YW4A96BT8B9AP6D7AM3

Run Details

Duration:
4.6s
Cost:
$0.007050
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 cobblestone street. Detective Hollis lit his cigarette. The mansion loomed in darkness. One window glowed sickly yellow. A scream split the night. Hollis dropped his burning match. He sprinted toward the gate. The iron bars stood open. That detail troubled him immediately. Someone had expected a visitor. Inside, candles flickered near death. Blood pooled across marble tiles. Lady Ashcroft lay quite still. Her emeralds remained perfectly untouched. This was never a robbery. Hollis knelt beside the body. Her fingers clutched torn paper. Three words stained it red. "He knows my secret." Footsteps creaked on the staircase.
created_at"2026-04-24T19:39:53.096Z" 4/24/2026, 7:39:53 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1124
moderation_latency(null)
generation_time4539
tokens_prompt46
tokens_completion200
native_tokens_prompt65
native_tokens_completion269
native_tokens_completion_images(null)
native_tokens_reasoning39
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"
usage0.00705
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"94ece527-16d5-472f-87fb-3ff128838ec7"
is_byokfalse
latency693
model_permaslug"anthropic/claude-4.7-opus-20260416"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777059593-FCLtqQT30n5DpFknF1iA"
session_id(null)
api_type"completions"
id"gen-1777059593-DH29rqts5hebNhnljLBO"
upstream_id"94ece527-16d5-472f-87fb-3ff128838ec7"
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
94.74% Matches word count n/a
neededCleanfalse
sentences19
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
189