Does AI-Flow Require Your Own API Keys or a Subscription?

AI-Flow does not require a subscription. Its own page states "No subscription · Free tier with your own API keys," and a section heading reads "Use your own API keys — or don't." So there are two paths: bring your own keys and use the free tier, or use the platform without supplying keys. The page does not publish prices or paid-plan details, so treat any cost beyond that as something to confirm on the site.

What "Use your own API keys — or don't" means

AI-Flow is an open-source, user-friendly UI application for creating workflows with different AI models. The "or don't" phrasing signals that supplying your own keys is optional, not mandatory. The page does not explain how the no-key path works, who pays for those model calls, or what limits apply, so that detail needs to be checked against the current site.

If you bring your own keys

• You connect models from providers such as OpenAI, Google, Anthropic, and Replicate inside one workflow.
• The page frames this as the free-tier route: no subscription, your keys.
• Model usage is typically billed by the provider whose key you use, since that provider is the one running the model. AI-Flow's page does not state that it bills you for those calls.

If you don't bring keys

• The page implies an alternative exists but gives no mechanics, pricing, or quota.
• Do not assume it is free or unlimited — the page does not say either way.

Which models can sit in one workflow

The page lists a long, mixed catalog of image, video, audio, and language models, including:

The page also mentions "10 models available" in one place while listing far more names elsewhere, so the exact count is inconsistent on the page itself. Treat the list as indicative, not a fixed number.

How to decide

• You already have API keys → the free tier with your own keys is the documented route, and you pay providers directly for usage.
• You don't want to manage keys → the page says you can proceed without them, but you must verify the current terms, limits, and any cost on the site before relying on it.
• You need a firm budget → the page publishes no prices, so no cost figure can be confirmed from it.

What the page does not answer

• Specific prices or paid tiers.
• Whether the no-key path is free, metered, or capped.
• Which provider bills you in the no-key case.

For any of these, check AI-Flow's current site directly, since the page evidence here does not cover them.