kitio.aiAI SDK vs Tolgee
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. AI SDK is completely free, while Tolgee is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Unified provider API
- Streaming responses
- Tool calling
- Structured output
- Built-in fallbacks
- Framework UI hooks
- In-context translation
- Context-aware AI translator
- JavaScript and mobile SDKs
- CLI and REST API
- Figma plugin
- Self-hosted option
| Feature | AI SDK | Tolgee |
|---|---|---|
| Best for | Vercel's open-source TypeScript toolkit for AI apps and agents | Open-source app localization platform with context-aware AI translation |
| Category | Coding | Coding |
| Pricing model | Free | Freemium |
| Starting price | Free | See pricing page |
| Free plan | Yes, fully free | Yes |
| Made by | Vercel | Tolgee |
| Based in | United States | Czechia |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
AI SDK is completely free, while Tolgee is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
5 plans
Free
Free
- 30,000 words
- 3 seats
- All integrations
Translate
€58/mo billed yearly
- AI translator with brand context
- Glossaries
Optimise
€133/mo billed yearly
- AI playground
- Branching
Manage
€373/mo billed yearly
- For mid-size teams
- More MT credits
Enterprise
Contact sales
- SSO
- Dedicated Slack channel
- Account manager
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
AI SDK
- Swap model providers easily
- Works across many JS frameworks
- Free and open source
- TypeScript and JavaScript only
- Fast-moving API between versions
- Model usage is billed by providers
Tolgee
- Open source and self-hostable
- Edit text inside the running app
- Free for open-source projects
- Paid tiers start at €58 a month
- Setup needs developer integration
- Word limits on the free plan
Which one should you choose?
Choose AI SDK if you want:
- Swap model providers easily
- Works across many JS frameworks
- Free and open source
Watch out: typescript and javascript only.
Choose Tolgee if you want:
- Open source and self-hostable
- Edit text inside the running app
- Free for open-source projects
Watch out: paid tiers start at €58 a month.
AI SDK vs Tolgee FAQ
What is the difference between AI SDK and Tolgee?
AI SDK: Vercel's open-source TypeScript toolkit for AI apps and agents. Tolgee: Open-source app localization platform with context-aware AI translation. Both are coding tools.
Is AI SDK or Tolgee cheaper?
AI SDK is completely free, while Tolgee is freemium.
Do AI SDK and Tolgee have free plans?
AI SDK: Yes, fully free. Tolgee: Yes.
Who makes AI SDK?
AI SDK is made by Vercel, based in United States.
Who makes Tolgee?
Tolgee is made by Tolgee, based in Czechia.
Which should I choose, AI SDK or Tolgee?
Choose AI SDK if you value swap model providers easily and works across many js frameworks. Choose Tolgee if you value open source and self-hostable and edit text inside the running app.