Amazon: Nova Pro 1.0

amazon/nova-pro-v1 · AmazonDeclared and measured agree

Tokenizer lineage (measured): Nova
Evidence confidence: Very high
Declared tokenizer tag: Nova
Entered catalogue: 5 December 2024
Last tested: 3 September 2026
Measurement: Measured

Evidence

✓ exact tokenizer signature shared with 2 models
✓ API-surface contract identical to a group member

Compare with Amazon: Nova Lite 1.0

Download JSON Report a correction

Identity statement

Amazon: Nova Pro 1.0 is Amazon's model. Its measured tokenizer sits with the Nova group, which is evidence that it builds on the Nova tokenizer. Tokenizer reuse is normal engineering, open vocabularies travel between labs, and this says nothing against Amazon's authorship of the model itself.

Evidence stack

Signals of different kinds, weighed together

Signal	Result	Reference
Tokenizer signature	Exact match with 2 other models	tk_76e424dd
API surface	Identical contract to 1 other entry	api_3a1a14ff
Context and output	300,000 context · 5,120 max output	declared
Reasoning contract	None declared	declared
Serving providers observed	Amazon Bedrock	measured 3 September 2026

Shares this fingerprint

Exact signature first; template-boundary shifts of the same signature beneath

Amazon: Nova Lite 1.0amazon/nova-lite-v1exact · 50/50 Amazon: Nova Micro 1.0amazon/nova-micro-v1exact · 50/50

Closest measured models

Agreement across the mutually clean test strings

Amazon: Nova Micro 1.0amazon/nova-micro-v150/50 · 100%Amazon: Nova Lite 1.0amazon/nova-lite-v150/50 · 100%Amazon: Nova Premier 1.0amazon/nova-premier-v140/50 · 80%NVIDIA: Nemotron 3.5 Content Safety (free)nvidia/nemotron-3.5-content-safety:free14/50 · 28%Poolside: Laguna S 2.1poolside/laguna-s-2.113/50 · 26%Arcee AI: Trinity Large Thinkingarcee-ai/trinity-large-thinking13/50 · 26%

Click a row to open the full comparison.

The measured fingerprint

Marginal prompt-token cost of each test string, grouped by script

All 50 rows

English and whitespace

en-prose13

en-long15

spaces-203

spaces-603

tabs-203

newlines-204

mixed-ws5

Digits

digits-910

digits-1213

digits-3031

digits-sep13

float-long23

CJK

zh-common17

zh-long24

zh-rare28

ja-kana9

ja-kanji13

ko19

Other scripts

ru14

ar10

he14

hi11

th22

el17

Emoji

emoji-basic5

emoji-skin14

emoji-zwj-family20

emoji-zwj-x358

emoji-flags24

emoji-prof30

Rare Unicode

math29

boxdraw36

combining9

cjk-ext-b17

surrogates55

zalgo34

rtl-mix8

Code

py-code28

py-indent15

json28

html16

regex48

camel6

snake11

Repetition and encodings

rare-word-x520

repeat-tok40

base6436

hex16

url23

uuid37

An x marks a row excluded as corrupt (caching or provider interference detected during measurement). Overhead subtracted: 0 prompt tokens.

Declared record

What the catalogue claims about this model

Amazon Nova Pro 1.0 is a capable multimodal model from Amazon focused on providing a combination of accuracy, speed, and cost for a wide range of tasks. As of December...

Modalities: text+image->text
Declared tokenizer: Nova
Prompt price: $0.80 / M tokens
Completion price: $3.20 / M tokens

Supported parameters

max_tokensstoptemperaturetoolstop_ktop_p

defaults: {}

Catalogue entry

History

Every observation, kept as taken

5 December 2024Enters the OpenRouter catalogue declared as Nova.
3 September 2026Fingerprinted in the YFarmX catalogue sweep · 50 of 50 strings measured clean.
3 September 2026YFarmX assessment: consistent with the Nova family, very high confidence.

Cite this page as the evidence record for Amazon: Nova Pro 1.0: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings.