Run: 2026-02-24-01KJ8V7E25P6CG3X239Z988ZFT

Run Details

Duration:
19.6s
Cost:
$0.029820
Provider:
Amazon Bedrock

Evaluation summary

Model input

User/Human
Expand every contraction in the following passage to its full form. For example: "don't" becomes "do not", "she'd" becomes "she had" or "she would" depending on context, "it's" becomes "it is" or "it has" depending on context. Important: - Expand contractions in BOTH dialogue and narration. - Do NOT expand possessives. For example, "someone else's name" is a possessive (belonging to someone else), not a contraction — leave it as-is. - Preserve correct capitalization: "She'd" at the start of a sentence becomes "She had", not "she had". - Change nothing else. Preserve all other text exactly as written — same words, same punctuation, same paragraph structure. Return only the rewritten passage, nothing else. <text> Mara didn't want to be there. She'd promised herself she wouldn't go back, but here she was, standing in the lobby of the building she'd left three years ago. It wasn't supposed to feel this way. "You're late," said the receptionist, a young man who didn't look up from his screen. He'd been typing something, and he didn't stop. "She's waiting in the conference room. You'll want to hurry — she's not in a good mood." Mara couldn't tell if that was meant as a warning or just small talk. She wasn't sure it mattered. She'd made her decision, and there wasn't any point in second-guessing it now. The hallway hadn't changed. The same grey carpet, the same harsh lighting, the same faint smell of coffee that'd been sitting too long. Mara wouldn't have been surprised to find her old nameplate still on the door, but it wasn't there. Someone else's name had replaced hers. "I didn't think you'd actually come," said Priya, who'd risen from her chair the moment Mara entered. She wasn't smiling. "We've got a problem, and you're the only one who can help." "I'm not sure that's true," Mara said. "I haven't been involved in the project for years. I wouldn't know where to begin." "You'd be surprised," Priya said. "It's the same codebase. They haven't touched the core modules. You'd recognize it instantly." Mara didn't answer right away. She'd already told herself she wouldn't get pulled back in. But she hadn't expected Priya to ask in person. That wasn't fair — it's harder to say no to someone's face. "I'll think about it," she said. That wasn't a yes, and they both knew it wasn't a no either. </text>

Model response

AI
Mara did not want to be there. She had promised herself she would not go back, but here she was, standing in the lobby of the building she had left three years ago. It was not supposed to feel this way. "You are late," said the receptionist, a young man who did not look up from his screen. He had been typing something, and he did not stop. "She is waiting in the conference room. You will want to hurry — she is not in a good mood." Mara could not tell if that was meant as a warning or just small talk. She was not sure it mattered. She had made her decision, and there was not any point in second-guessing it now. The hallway had not changed. The same grey carpet, the same harsh lighting, the same faint smell of coffee that had been sitting too long. Mara would not have been surprised to find her old nameplate still on the door, but it was not there. Someone else's name had replaced hers. "I did not think you would actually come," said Priya, who had risen from her chair the moment Mara entered. She was not smiling. "We have got a problem, and you are the only one who can help." "I am not sure that is true," Mara said. "I have not been involved in the project for years. I would not know where to begin." "You would be surprised," Priya said. "It is the same codebase. They have not touched the core modules. You would recognize it instantly." Mara did not answer right away. She had already told herself she would not get pulled back in. But she had not expected Priya to ask in person. That was not fair — it is harder to say no to someone's face. "I will think about it," she said. That was not a yes, and they both knew it was not a no either.
created_at"2026-02-24T22:10:00.4Z" 2/24/2026, 10:10:00 PM
model"anthropic/claude-4.6-opus-20260205"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1364
moderation_latency152
generation_time19313
tokens_prompt611
tokens_completion955
native_tokens_prompt639
native_tokens_completion1065
native_tokens_completion_images(null)
native_tokens_reasoning522
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.02982
router(null)
provider_responses
0
endpoint_id"a8708fb9-08ea-43bb-a3b1-165c87ef09df"
id"4d93baac-128d-4daa-9334-87af88505b1a"
is_byokfalse
latency1364
model_permaslug"anthropic/claude-4.6-opus-20260205"
provider_name"Amazon Bedrock"
status200
api_type"completions"
id"gen-1771971000-P2QsgjosDWZPmYw1ffjp"
upstream_id"4d93baac-128d-4daa-9334-87af88505b1a"
total_cost0.02982
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"

Evaluation details

Result Evaluator Details Meta Data
100.00% Non-contraction text preserved
5/5 anchor points preserved
matched5
total5
details
0
id"set-1"
paragraphFoundtrue
preservedtrue
1
id"set-2"
paragraphFoundtrue
preservedtrue
2
id"set-3"
paragraphFoundtrue
preservedtrue
3
id"set-4"
paragraphFoundtrue
preservedtrue
4
id"set-5"
paragraphFoundtrue
preservedtrue
100.00% Contraction expansion accuracy
43/43 contractions correctly expanded
neededCleanfalse
matched43
total43
details
0
id"c01"
paragraphFoundtrue
correcttrue
matched"did not"
expected
0"did not"
1
id"c02"
paragraphFoundtrue
correcttrue
matched"She had"
expected
0"She had"
2
id"c03"
paragraphFoundtrue
correcttrue
matched"would not"
expected
0"would not"
3
id"c04"
paragraphFoundtrue
correcttrue
matched"she had"
expected
0"she had"
4
id"c05"
paragraphFoundtrue
correcttrue
matched"was not"
expected
0"was not"
5
id"c06"
paragraphFoundtrue
correcttrue
matched"You are"
expected
0"You are"
6
id"c07"
paragraphFoundtrue
correcttrue
matched"did not"
expected
0"did not"
7
id"c08"
paragraphFoundtrue
correcttrue
matched"He had"
expected
0"He had"
8
id"c09"
paragraphFoundtrue
correcttrue
matched"did not"
expected
0"did not"
9
id"c10"
paragraphFoundtrue
correcttrue
matched"She is"
expected
0"She is"
10
id"c11"
paragraphFoundtrue
correcttrue
matched"You will"
expected
0"You will"
11
id"c12"
paragraphFoundtrue
correcttrue
matched"she is"
expected
0"she is"
12
id"c13"
paragraphFoundtrue
correcttrue
matched"could not"
expected
0"could not"
13
id"c14"
paragraphFoundtrue
correcttrue
matched"was not"
expected
0"was not"
14
id"c15"
paragraphFoundtrue
correcttrue
matched"She had"
expected
0"She had"
15
id"c16"
paragraphFoundtrue
correcttrue
matched"was not"
expected
0"was not"
16
id"c17"
paragraphFoundtrue
correcttrue
matched"had not"
expected
0"had not"
17
id"c18"
paragraphFoundtrue
correcttrue
matched"that had"
expected
0"that had"
difficulty"hard"
18
id"c19"
paragraphFoundtrue
correcttrue
matched"would not"
expected
0"would not"
19
id"c20"
paragraphFoundtrue
correcttrue
matched"was not"
expected
0"was not"
20
id"c21"
paragraphFoundtrue
correcttrue
matched"did not"
expected
0"did not"
21
id"c22"
paragraphFoundtrue
correcttrue
matched"you would"
expected
0"you would"
22
id"c23"
paragraphFoundtrue
correcttrue
matched"who had"
expected
0"who had"
difficulty"hard"
23
id"c24"
paragraphFoundtrue
correcttrue
matched"was not"
expected
0"was not"
24
id"c25"
paragraphFoundtrue
correcttrue
matched"We have"
expected
0"We have"
25
id"c26"
paragraphFoundtrue
correcttrue
matched"you are"
expected
0"you are"
26
id"c27"
paragraphFoundtrue
correcttrue
matched"I am"
expected
0"I am"
27
id"c28"
paragraphFoundtrue
correcttrue
matched"that is"
expected
0"that is"
28
id"c29"
paragraphFoundtrue
correcttrue
matched"have not"
expected
0"have not"
29
id"c30"
paragraphFoundtrue
correcttrue
matched"would not"
expected
0"would not"
30
id"c31"
paragraphFoundtrue
correcttrue
matched"You would"
expected
0"You would"
31
id"c32"
paragraphFoundtrue
correcttrue
matched"It is"
expected
0"It is"
32
id"c33"
paragraphFoundtrue
correcttrue
matched"have not"
expected
0"have not"
33
id"c34"
paragraphFoundtrue
correcttrue
matched"You would"
expected
0"You would"
34
id"c35"
paragraphFoundtrue
correcttrue
matched"did not"
expected
0"did not"
35
id"c36"
paragraphFoundtrue
correcttrue
matched"She had"
expected
0"She had"
36
id"c37"
paragraphFoundtrue
correcttrue
matched"would not"
expected
0"would not"
37
id"c38"
paragraphFoundtrue
correcttrue
matched"had not"
expected
0"had not"
38
id"c39"
paragraphFoundtrue
correcttrue
matched"was not"
expected
0"was not"
39
id"c40"
paragraphFoundtrue
correcttrue
matched"it is"
expected
0"it is"
40
id"c41"
paragraphFoundtrue
correcttrue
matched"I will"
expected
0"I will"
41
id"c42"
paragraphFoundtrue
correcttrue
matched"was not"
expected
0"was not"
42
id"c43"
paragraphFoundtrue
correcttrue
matched"was not"
expected
0"was not"
easyScore1
hardScore1
100.00% Possessive traps preserved
2/2 possessive traps correctly preserved
matched2
total2
details
0
id"trap-1"
paragraphFoundtrue
preservedtrue
1
id"trap-2"
paragraphFoundtrue
preservedtrue
100.0000%