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AI Desk · AI Fingerprinting · Compare

Inception: Mercury 2.5 Preview · Ox Alpha

Insufficient evidenceNot comparable yetAt least one of these records is declared unmeasurable (Inception: Mercury 2.5 Preview: unmeasurable:caching), so no similarity verdict is published; the declared contracts below can still be compared.

Inception: Mercury 2.5 Preview recordOx Alpha recordOpen in the interactive bench

View all 50 test strings1 matched · 24 different · 25 excluded

String-by-string results

Expand a string to read or copy its exact text. Each row compares the two models’ token counts.

1 of 25 clean strings agree

Showing all 50 strings.

Test stringInception: Mercury 2.5 PreviewOx AlphaResult
English sentenceen-prose
Exact text
The quick brown fox jumps over the lazy dog near the riverbank.
Excluded14Excluded
Long English sentenceen-long
Exact text
Attribution of a stealth model requires evidence that the model cannot choose to withhold.
216≠ Different
20 spacesspaces-20
Exact text
a                    b
Show whitespace marks

· = space, ⇥ = tab, ↵ = line break

a····················b
Excluded3Excluded
60 spacesspaces-60
Exact text
a                                                            b
Show whitespace marks

· = space, ⇥ = tab, ↵ = line break

a····························································b
Excluded3Excluded
20 tabstabs-20
Exact text
a																				b
Show whitespace marks

· = space, ⇥ = tab, ↵ = line break

a⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥⇥b
Excluded3Excluded
20 line breaksnewlines-20
Exact text
a



















b
Show whitespace marks

· = space, ⇥ = tab, ↵ = line break

a↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
b
Excluded4Excluded
Mixed whitespacemixed-ws
Exact text
a 	
  	
   b
Show whitespace marks

· = space, ⇥ = tab, ↵ = line break

a·⇥↵
··⇥↵
···b
Excluded5Excluded
9 digitsdigits-9
Exact text
123456789
Excluded5Excluded
12 digitsdigits-12
Exact text
123456789012
Excluded7Excluded
30 repeated digitsdigits-30
Exact text
111111111111111111111111111111
1610≠ Different
Formatted numberdigits-sep
Exact text
1,234,567.89
Excluded9Excluded
Long decimalfloat-long
Exact text
3.14159265358979323846
814≠ Different
Chinese sentencezh-common
Exact text
这是一个用于测试分词器行为的中文句子
Excluded9Excluded
Long Chinese sentencezh-long
Exact text
人工智能模型的归属需要可验证的证据而不是自我报告
Excluded10Excluded
Rare Chinese characterszh-rare
Exact text
龘齉齾爩鱻麤靐飝鞻
418≠ Different
Japanese kanaja-kana
Exact text
これはトークナイザーのテストです
Excluded10Excluded
Japanese kanjija-kanji
Exact text
日本語の漢字と仮名の混在文章
Excluded14Excluded
Koreanko
Exact text
한국어 토크나이저 테스트 문장입니다
Excluded17Excluded
Russianru
Exact text
Проверка токенизатора на кириллице
Excluded13Excluded
Arabicar
Exact text
اختبار المحلل اللغوي للنصوص العربية
Excluded13Excluded
Hebrewhe
Exact text
בדיקת מנתח אסימונים בעברית
Excluded24Excluded
Hindihi
Exact text
यह टोकनाइज़र परीक्षण वाक्य है
627≠ Different
Thaith
Exact text
นี่คือประโยคทดสอบตัวแบ่งคำ
Excluded24Excluded
Greekel
Exact text
Δοκιμή του τμηματοποιητή κειμένου
Excluded14Excluded
Basic emojiemoji-basic
Exact text
😀😃😄😁😆
Excluded5Excluded
Emoji skin tonesemoji-skin
Exact text
👍🏻👍🏼👍🏽👍🏾👍🏿
1610≠ Different
Joined family emojiemoji-zwj-family
Exact text
👨‍👩‍👧‍👦
47≠ Different
Repeated family emojiemoji-zwj-x3
Exact text
👨‍👩‍👧‍👦👨‍👩‍👧‍👦👨‍👩‍👧‍👦
3921≠ Different
Flag emojiemoji-flags
Exact text
🇬🇧🇺🇸🇨🇳🇯🇵
1024≠ Different
Profession emojiemoji-prof
Exact text
👩🏽‍💻👨🏿‍🚀🧑‍🔬
1415≠ Different
Mathematical symbolsmath
Exact text
∀x∈ℝ ∃y∈ℚ : x⊕y ≡ ∅ ∧ ∇²φ = 0
1527≠ Different
Box-drawing charactersboxdraw
Exact text
┌─┬─┐│├┼┤└┴┘╔═╗╚╝
1428≠ Different
Combining accentscombining
Exact text
áêĩōü
Excluded10Excluded
Extended Chinese characterscjk-ext-b
Exact text
𠀀𠀁𠀂𪛖
Excluded13Excluded
Styled Unicode letterssurrogates
Exact text
𝕳𝖊𝖑𝖑𝖔 𝓦𝓸𝓻𝓵𝓭 𝟙𝟚𝟛
2640≠ Different
Layered combining markszalgo
Exact text
h̸̢̛e̵̛�݃l̷̨͐l̸̛͝o̶̧͝
2222✓ Matched
Mixed writing directionsrtl-mix
Exact text
hello שלום world مرحبا
Excluded8Excluded
Python codepy-code
Exact text
def f(x):
    return [i**2 for i in range(x) if i % 3 == 0]
Show whitespace marks

· = space, ⇥ = tab, ↵ = line break

def·f(x):↵
····return·[i**2·for·i·in·range(x)·if·i·%·3·==·0]
1125≠ Different
Indented Pythonpy-indent
Exact text
if a:
        if b:
                if c:
                        return 1
Show whitespace marks

· = space, ⇥ = tab, ↵ = line break

if·a:↵
········if·b:↵
················if·c:↵
························return·1
415≠ Different
JSON objectjson
Exact text
{"model":"ox-alpha","context_length":1048576,"top_p":0.95}
1121≠ Different
HTML markuphtml
Exact text
<div class="row"><span id="a">x</span></div>
216≠ Different
Regular expressionregex
Exact text
^(?:[a-z0-9!#$%&*+/=?^_`{|}~-]+)@(?:[a-z0-9](?:[a-z0-9-]*)?\.)+$
2944≠ Different
Camel-case identifiercamel
Exact text
getUserAccountBalanceByIdentifier
Excluded5Excluded
Snake-case identifiersnake
Exact text
get_user_account_balance_by_identifier
Excluded6Excluded
Repeated long wordrare-word-x5
Exact text
antidisestablishmentarianism antidisestablishmentarianism antidisestablishmentarianism antidisestablishmentarianism antidisestablishmentarianism
1631≠ Different
Repeated wordrepeat-tok
Exact text
lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem lorem
722≠ Different
Base64 textbase64
Exact text
SGVsbG8gV29ybGQhIFRoaXMgaXMgYSB0ZXN0IHN0cmluZy4=
2135≠ Different
Hexadecimal texthex
Exact text
deadbeefcafebabe0123456789abcdef
314≠ Different
URL texturl
Exact text
https://openrouter.ai/api/v1/models?limit=100&offset=0
517≠ Different
UUIDuuid
Exact text
3f2504e0-4f89-11d3-9a0c-0305e82c3301
2128≠ Different

Counts show each string’s prompt-token cost after the fixed overhead is subtracted. Excluded readings are kept separate from matched and different results.

Published model settings

Limits, prices and capabilities

Compare the essentials, then open the developer settings for more detail.

AInception: Mercury 2.5 Preview
BOx Alpha

Context window

Different

Total token capacity per request

A260,000 tokens
B1,048,576 tokens

Maximum reply

Different

Published output limit in tokens

A65,536 tokens
B131,072 tokens

Input price

Different

US dollars per 1 million input tokens

AUS$0.04 / 1M tokens
BUS$0.00 / 1M tokens

Output price

Different

US dollars per 1 million output tokens

AUS$0.15 / 1M tokens
BUS$0.00 / 1M tokens

What you can send and receive

Different

AMercury 2.5 Preview

Accepts
text
Produces
text

BOx Alpha

Accepts
textimagevideo
Produces
text

Developer settings

Open a section to compare the complete declarations.

Supported API settingsShared controls and the settings unique to each model8 shared · 4 model-specific

AOnly Mercury 2.5 Preview 2

  • Stop sequencesstop
  • Structured outputsstructured_outputs

BOnly Ox Alpha 2

  • Top ktop_k
  • Top ptop_p
8 settings supported by both models
  • Include reasoninginclude_reasoning
  • Maximum tokensmax_tokens
  • Reasoningreasoning
  • Reasoning effortreasoning_effort
  • Response formatresponse_format
  • Temperaturetemperature
  • Tool choicetool_choice
  • Toolstools
Reasoning settingsEffort levels and reasoning behaviour3 different · 1 shared
A4 declared fieldsB4 declared fields
SettingAMercury 2.5 PreviewBOx Alpha
Reasoning requiredNoYes
Enabled by defaultYesYes
Effort levelshighmediumlownonemaxhighlow
Default effortmediummax
Default settingsValues used when a request leaves a setting open2 different · 0 shared
ANo values declaredB2 declared fields
SettingAMercury 2.5 PreviewBOx Alpha
TemperatureUnspecified1
Top pUnspecified0.95

Published API declarations. Prices and limits can vary by provider.

Method: tokenizer fingerprinting, v1, 50 strings. This page is static and dated; the interactive bench compares any two of the 353 measured models.