BYOAIK (Bring Your Own AI Key) is a directory of AI tools that run on your own API key.

Sim

Open-source visual builder for AI agent workflows with full bring-your-own-key support.

Website Source code

Category:
Agent Frameworks
Maintenance:
Actively developed (last commit 2 days ago)
Pricing:
Freemium
Open source:
Yes (Apache-2.0)
Self-hostable:
Yes
Local-first:
Yes
Platforms:
Web, Self-hosted, Docker
AI providers (bring your own key):
OpenAI, Anthropic, Google Gemini, Azure OpenAI, OpenRouter, Groq, Mistral, Cohere, DeepSeek, xAI Grok, Ollama, Fireworks, Custom / OpenAI-compatible
API key storage:
User controls deployment
Key risk level:
LOW
Trust score:
83/100

Sim (formerly Sim Studio) is an open-source AI agent platform where you build, deploy, and orchestrate agents on a lightweight visual canvas by connecting blocks, or conversationally and via code. It supports 15+ LLM providers and explicitly documents Bring Your Own Key: "you can use your own API keys at base provider pricing with no markup." Users plug in their own keys for OpenAI, Anthropic, Google Gemini, Mistral, xAI Grok, Groq, DeepSeek, OpenRouter, Cohere, Fireworks, and others, and can point at self-hosted OpenAI-compatible endpoints via Ollama (OLLAMA_URL), vLLM (VLLM_BASE_URL), and LiteLLM (LITELLM_BASE_URL), plus Azure OpenAI/Anthropic endpoints. It runs as a hosted cloud product (free Community tier with paid Pro/Max/Enterprise) or fully self-hosted via `npx simstudio` or Docker Compose, requiring PostgreSQL with pgvector. Apache-2.0 licensed, ~28k GitHub stars, very actively maintained (v0.7.10 released June 2026, 5,000+ commits).

Why this trust score (83/100)

Trust measures how the tool treats your API key and how much of that has been verified. It contains no popularity signal.

  • Key Safety 21/25: The key lives in a deployment you run yourself.
  • Request Routing 17/20: Requests go straight from you to the AI provider.
  • Transparency 20/20: Source is public under Apache-2.0, so anyone can check how the key is handled.
  • Privacy 14/15: Local-first: it works without sending your data anywhere. Can be self-hosted, so the data path stays inside infrastructure you control.
  • Maintenance 10/10: Actively developed: commits within the last three months.
  • Verification Confidence 1/10: Compiled from public documentation by an AI-assisted pass, not independently confirmed.

What was checked

Verification tier RESEARCH_ASSISTED, derived from the evidence below and not set by hand.

  • [REPORTED · RESEARCH] This listing was compiled by an AI-assisted research pass over the tool's public website, README and documentation. No person independently confirmed it.
  • [STRONG · SOURCE_SCAN] Supports a local model backend, so it can run with no cloud provider key at all. source
  • [CONFIRMED · SOURCE_SCAN] Most recent commit 2026-08-15, about 0 month(s) ago. source

How your API key is handled

You self-host the app, so your API key lives in your own deployment. Requests are sent directly to the AI provider. Because it can be self-hosted, your key never has to touch a third-party backend.

Setup

Deploy it (Docker/compose), add your provider API key in the admin or environment config, then select models.