# Credits or models are unavailable

> Fix blocked chats and agents when the workspace is out of credits or when no model is available to you.

Source: https://docs.tulipfarm.ai/troubleshooting/credits-or-models-unavailable/

[Credits](https://docs.tulipfarm.ai/concepts/credits/) pay for AI model use, and the whole workspace shares them. Admins choose which models each team can use. If either one is missing, chats and agents can't reply.

## "Your workspace has no available credits"

**Why this happens**

The workspace used all of its credits. At zero credits, TulipFarm blocks these actions:

- New chats
- Replies
- Agent model steps

Existing messages stay readable.

**What to do**

1. Ask a workspace admin to check the balance on the **Usage** page.
2. Ask the admin to email [hello@tulipfarm.ai](mailto:hello@tulipfarm.ai) about credits. When the balance is zero, the **Usage** page shows an **Email support** button for this.

There is no self-serve top-up. See [Get more credits](https://docs.tulipfarm.ai/billing/get-more-credits/).

## A reply does not start, but the workspace has credits

**Why this happens**

TulipFarm reserves credits before each model call. A large model needs a larger reservation. A small positive balance can be too low for that reservation.

**What to do**

1. Choose a different model in the model picker, if one is available.
2. Ask a workspace admin to contact support about credits.

## "No models are available. Ask a workspace admin."

**Why this happens**

No model is turned on for you in this workspace. Admins choose which teams can use each model.

**What to do**

1. Ask a workspace admin to open **Settings**, then **Models**.
2. Ask the admin to give your team access to a model.

## "Model access is unavailable. Ask a workspace admin."

**Why this happens**

Model access for this workspace is unavailable. An admin or TulipFarm support needs to check the workspace configuration.

**What to do**

1. Ask a workspace admin to check **Models** in **Settings**.
2. If the admin can't fix it, [contact support](https://docs.tulipfarm.ai/troubleshooting/contact-support/).

## The model is disabled in this workspace

**Why this happens**

An admin turned off the model that you chose.

**What to do**

Choose another model in the model picker. An unavailable model does not erase your saved preference.

## Related

- [Credits](https://docs.tulipfarm.ai/concepts/credits/)
- [How credits are used](https://docs.tulipfarm.ai/billing/)
- [Models](https://docs.tulipfarm.ai/admin/models/)
- [Usage](https://docs.tulipfarm.ai/admin/usage/)