Translate with Anthropic Claude
Anthropic’s Claude models are known for nuanced, context-aware text generation. Claude is an excellent choice when you need translations that carefully preserve tone and meaning across languages.
Prerequisites
- A ButterKit Pro license
- An Anthropic API key (create one at console.anthropic.com)
Connect Anthropic Claude to ButterKit
Open Settings
In ButterKit, go to Settings > Models.
Add a new model
Click the + button to add a new cloud model.
Enter your model details
Fill in the following fields:
| Field | Value |
|---|---|
| Description | Anthropic Claude (or any label you prefer) |
| URL | https://api.anthropic.com |
| API Key | Your Anthropic API key |
| Model | claude-sonnet-4-6 (recommended) |
| API Key Header | Leave blank (auto-detected) |
| Temperature | 0.35 |
Temperature controls randomness: lower values (0.0-0.3) produce more literal translations, while higher values (0.4-0.7) allow light paraphrasing. We recommend
0.35as a good starting point. Some endpoints may clamp or ignore this value.
Security: Your API key is stored securely in the macOS Keychain. It is never sent to ButterKit servers or any third party other than the provider you configure.
Connecting a cloud translation model in ButterKit Settings
Test the connection
Click Test Connection to verify that ButterKit can reach Anthropic with your key. You should see a success confirmation.
Start translating
Toggle Use as default if you want Claude for all translations, or select it from the Translate with dropdown when adding a localization.
Available Models
| Model | Best for | Relative cost |
|---|---|---|
claude-sonnet-4-6 | Recommended default; best balance of speed, quality, and cost | Medium |
claude-opus-4-6 | Highest quality for nuanced or complex translations | High |
claude-haiku-4-5-20251001 | Fastest and most affordable; great for bulk translation | Low |
Recommended Settings
claude-sonnet-4-6 is the recommended default. It delivers strong translation quality with good speed and supports up to 1 million tokens of context.
For translations where subtle tone and cultural nuance matter most, claude-opus-4-6 is the premium choice. For high-volume bulk work where speed and cost are priorities, claude-haiku-4-5-20251001 is an excellent option.
Billing
You are billed directly by Anthropic based on token usage. ButterKit does not add any markup. Monitor your usage at console.anthropic.com/settings/billing.
Quick Help
- Need more help? Browse the Documentation
- Check out our Templates & Add-ons
- Join us on Discord for quick help
- Any other questions? Get in touch