Custom.MTCustom Machine Translation

Custom.MT Translation pricing

Last Updated: January 30, 2026

Custom.MT uses a layered pricing model that separates console processing capacity from translation provider costs.

This approach gives you full control over:

  • how much workload the Custom.MT console processes,
  • which translation providers are used,
  • and who pays for provider API usage.

How pricing works

Translation usage in Custom.MT is calculated monthly and measured in characters or tokens, depending on the technology used.

  • 1 million characters = 10⁶ characters
  • Prices are listed in EUR
  • VAT is not included


Custom.MT pricing consists of three independent layers:

  1. Console processing capacity (included in subscription)
  2. Default Key Translation (provider APIs billed by Custom.MT)
  3. User Key Translation (provider APIs billed directly to you)

1. Console processing capacity included in subscription

Each subscription plan includes a predefined monthly processing capacity of the Custom.MT Console.

This capacity defines how much translation workload the console can accept, orchestrate, route, process and monitor within a billing month. It applies to all translation processed inside Custom.MT, including work done via the Console UI, Web Translation, Get Translation, Best Engine, Corporate Translation Portal, any connectors and API requests handled by the console.

Subscription processing capacity and overage pricing

Subscription plan Monthly processing capacity included Overage price per 1M characters
Language Team (archived)
Up to 10M characters per month
€ 20
Starter Edition
Up to 10M characters per month
€ 20
Advanced Edition
Up to 30M characters per month
€ 40
Compliance Edition
Up to 50M characters per month
€ 50
Enterprise
TBD
TBD

Important clarification

If you exceed the included monthly processing capacity, the excess workload is billed according to the overage price shown above.

2. Default Key Translation (billed by Custom.MT)

Custom.MT provides access to Machine Translation and LLM providers using Custom.MT-managed API keys, referred to as Default Keys (configured in the Credentials section).

When Default Key Translation applies

Default Key Translation is used when:

 
  • you do not provide your own provider API keys,

  • translation usage is not included in your subscription.

    In this scenario:

     

  • Custom.MT pays the translation provider,

  • Custom.MT invoices you based on actual provider usage.

MT provider pricing (Default Key)

MT provider API usage Price for 1 character
Amazon Translate Usage
€ 0.000015
Alibaba Cloud Usage
€ 0.000035
DeepL Usage
€ 0.000030
Baidu Translate Usage
€ 0.000020
Globalese Cloud Usage
€ 0.000020
Google Cloud Translation Usage
€ 0.000020
LanguageWire Usage
€ 0.000020
Lara by translated
€ 0.000020
Microsoft Translator Usage
€ 0.000010
ModernMT Usage
€ 0.000050
Pangea Usage
€ 0.000080
Papago Text Translation Usage
€ 0.000017
Systran Usage
€ 0.000032
Yandex Translate Usage
€ 0.000020
Widn Tower Anthill
€ 0.000005
Widn Tower Sugarloaf
€ 0.000010
Widn Tower Vesuvius
€ 0.000025
Tilmoch
€ 0.000030

LLM provider pricing (Default Key)

LLM models such as OpenAI, Anthropic and Google are billed based on tokens, not characters.

LLM API usage Price for 1 token input Price for 1 token output
OpenAI GPT-3.5-turbo-1106
€ 0.000001
€ 0.000002
OpenAI GPT-3.5 Turbo 4K context
€ 0.0000015
€ 0.000002
OpenAI GPT-3.5 Turbo 16K context
€ 0.000003
€ 0.000004
OpenAI GPT-3.5-turbo-0125
€ 0.0000005
€ 0.0000015
OpenAI GPT-4-1106-preview
€ 0.000010
€ 0.000030
OpenAI GPT-4 8K context
€ 0.000030
€ 0.000060
OpenAI GPT-4 32K context
€ 0.000060
€ 0.000120
OpenAI GPT-4-turbo-2024-04-09
€ 0.000010
€ 0.000030
OpenAI GPT-4o-2024-05-13
€ 0.000005
€ 0.000015
OpenAI GPT-4o-2024-08-06
€ 0.0000025
€ 0.000010
OpenAI GPT-4o-2024-11-20
€ 0.0000025
€ 0.000010
OpenAI GPT-4o-mini-2024-07-18
€ 0.00000015
€ 0.0000006
OpenAI GPT-5-2025-08-07
€ 0.00000125
€ 0.000010
OpenAI GPT-5-mini-2025-08-07
€ 0.00000025
€ 0.000002
OpenAI GPT-5-nano-2025-08-07
€ 0.00000005
€ 0.0000004
Gemini 1.5 Pro
€ 0.00000125
€ 0.000005
Gemini 2.5 Pro
€ 0.00000125
€ 0.000010
Gemini 3 Pro
€ 0.000002
€ 0.000012
Anthropic Claude 3.5 Sonnet
€ 0.000003
€ 0.000015
Anthropic Claude 3.7 Sonnet
€ 0.000003
€ 0.000015
Anthropic Claude 4 Sonnet
€ 0.000003
€ 0.000015
Anthropic Claude 4.5 Sonnet
€ 0.000003
€ 0.000015

3. User Key Translation (not billed by Custom.MT)

Custom.MT allows you to connect your own API keys for MT and LLM providers. This mode is referred to as User Key Translation.

 

When User Key Translation applies

User Key Translation is used when:

  • you supply your own API keys for translation providers,
  • requests are sent directly to the provider under your contract.

In this case:

  • No characters or tokens are billed by Custom.MT
  • You pay the provider directly, according to your agreement with them

Custom.MT only records technical usage statistics for transparency, monitoring and debugging purposes.

Charged characters (MT usage)

When translation provider usage is billed (via Default Key or when subscription limits are exceeded), all characters included in the request are charged. This includes not only the main text content, but also tags, whitespace characters, glossary entries, as well as any style rules and prompt instructions sent with the request.

Example

 

<p>こんにちは</p> → counts as 12 characters

Additional rules:

  • Empty requests are charged as 1 character
  • Multi-target translation multiplies usage

Example:
5,000 characters × 2 target languages = 10,000 characters

Tag handling filters may increase or decrease the final character count, as the request is transformed before processing

Charged tokens (LLM usage)

For LLM-based processing:

 

  • Requests include both text and prompt instructions
  • Prompt components (roles, rules, glossary, style, protections) contribute to token usage
  • Providers return actual input and output token counts
  • Custom.MT invoices strictly based on provider-reported usage

More information about tokenization:

Billing and transparency

  • All character and token usage is available in Custom.MT Statistics

  • Invoices include a detailed usage breakdown

  • Payments are processed automatically using the selected payment method

For billing questions, contact support@custom.mt

Need help choosing the right setup?

Not sure which subscription, processing capacity or key strategy fits your workflow?

 

Book a call with our team to:

  • optimize platform capacity,
  • choose between Default Keys and User Keys,
  • align provider costs with internal budgets,
  • avoid unexpected overages.