Connect your own API keys from OpenAI, DeepSeek, Groq, Mistral, Together AI, Fireworks, or any OpenAI-compatible provider on Pro, Team, Max, or Business.

Different AI models excel at different things. Claude is exceptional at reasoning and complex architectures. GPT-4o is fast and reliable. DeepSeek offers incredible value. Groq delivers blazing inference speed. Mistral handles European languages beautifully.
So why would you lock yourself into just one?
With VULK's BYOM (Bring Your Own Model) system, you don't have to choose. On Pro, Team, Max, and Business, connect your own API keys and use whatever model fits your project.
VULK supports 8 AI providers natively, plus any OpenAI-compatible endpoint:
| Provider | Key Models | Best For |
|---|---|---|
| OpenAI | GPT-4o, GPT-4o-mini, o3 | General-purpose, fast iteration |
| DeepSeek | DeepSeek V3, DeepSeek R1 | Cost-effective, strong reasoning |
| Groq | Llama 3.3 70B, Mixtral | Ultra-fast inference (500+ tok/s) |
| Mistral | Mistral Large, Codestral | European languages, code generation |
| Together AI | Llama 3.1 405B, Qwen 2.5 | Large open-source models |
| Fireworks | FireFunction, Llama 3.3 | Production-grade, low latency |
| Ollama | Any local model | Privacy-first, offline development |
| Custom | Any OpenAI-compatible API | Self-hosted, enterprise setups |
Setting up BYOM takes about 30 seconds:
Your API key is encrypted with AES-256-GCM before storage. We never log your requests or responses. The key is only decrypted at the moment of making the API call.
When you use BYOM, model inference goes through your provider key. VULK doesn't charge generation credits for BYOM calls — you pay the provider's token costs, while VULK still provides orchestration, preview, validation, deployment, storage, and support.
This means:
VULK's model router is intelligent about how it uses your key:
User Prompt → Intent Analysis → Model Router
├── Config files → Fast model (saves cost)
├── UI components → Medium model (balanced)
└── Auth/Security → Best model (accuracy)
Even with BYOM, VULK's smart routing can optimize your costs by using lighter models for simpler files — if you enable it in settings.
Before saving your key, VULK makes a lightweight validation request to confirm:
If validation fails, you get a clear error message explaining what to fix — no guessing.
BYOM starts on Pro and is also available on Team, Max, and Business. Free and Builder use VULK-hosted models only. Head to Settings → API Keys, connect your provider, and start building with the model stack you already trust.
Your keys. Your models. Your apps. Available on production plans.
Published by João Castro · 6 min read
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