Run: 2026-04-24-01KPZTVHTXC75440YSMM9GXA9T

Run Details

Model:
Claude Opus 4.7
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
4.2s
Cost:
$0.006450
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 cobblestone streets. Detective Marlowe lit his cigarette. The body lay face down. Blood pooled near the gutter. A woman screamed from nearby. Marlowe knelt beside the corpse. His gloved hand found something. A silver locket gleamed faintly. The initials read "E.M." clearly. Marlowe's breath caught in surprise. He knew those initials well. His sister vanished last winter. Now questions demanded hard answers. Someone wanted him on scene. This murder felt deeply personal. The rain washed away evidence. Marlowe pocketed the locket quietly. Witnesses would lie, he knew. The truth lived in shadows. Tonight, he would hunt shadows.
created_at"2026-04-24T13:28:50.284Z" 4/24/2026, 1:28:50 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency917
moderation_latency(null)
generation_time4114
tokens_prompt46
tokens_completion163
native_tokens_prompt65
native_tokens_completion245
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"
usage0.00645
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"4ecdd32b-ecff-4c2e-84bf-3a60023b6bf6"
is_byokfalse
latency917
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-1777037330-KRxrxgEOnuSNpKbMLfa2"
session_id(null)
api_type"completions"
id"gen-1777037330-m7iCfB8zZr403CIDIuNR"
upstream_id"4ecdd32b-ecff-4c2e-84bf-3a60023b6bf6"
total_cost0.00645
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