---
title: "End your cost"
description: "Set effective_to to now (default) or a later instant."
canonical_url: "https://twominutebilling.com/help/developers/api-reference/model-prices/end-your-cost"
---
# End your cost

> Set effective_to to now (default) or a later instant.

<api-operation method="POST" path="/v1/organization/model_cost_overrides/{id}/end">
<template v-slot:docs="">

Set `effective_to` to now (default) or a later instant.

## Path parameters

<table>
<thead>
  <tr>
    <th>
      Parameter
    </th>
    
    <th>
      Type
    </th>
    
    <th>
      Required
    </th>
    
    <th>
      Description
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        id
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      <strong>
        yes
      </strong>
    </td>
    
    <td>
      The cost's id (mco_…).
    </td>
  </tr>
</tbody>
</table>

## Headers

<table>
<thead>
  <tr>
    <th>
      Parameter
    </th>
    
    <th>
      Type
    </th>
    
    <th>
      Required
    </th>
    
    <th>
      Description
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        Idempotency-Key
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      Safely retry writes — repeats return the original response. If a write FAILED after it had already taken effect, that failure is what repeats: the key is spent, and a new attempt needs a new key.
    </td>
  </tr>
</tbody>
</table>

## Body

The request body is optional.

<table>
<thead>
  <tr>
    <th>
      Field
    </th>
    
    <th>
      Type
    </th>
    
    <th>
      Required
    </th>
    
    <th>
      Description
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        effective_to
      </code>
    </td>
    
    <td>
      <code>
        string · ISO-8601
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      Now or later. Default now.
    </td>
  </tr>
</tbody>
</table>

## Response

<table>
<thead>
  <tr>
    <th>
      Field
    </th>
    
    <th>
      Type
    </th>
    
    <th>
      Description
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        object
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      The object type; always <code>
        model_cost_override
      </code>
      
      . One of <code>
        model_cost_override
      </code>
      
      .
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        id
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      The model cost override's id.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        provider
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      Null = this model under any provider.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        model
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      The model id or name, as your events send it.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        token_type
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      The model cost override's token type.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        currency
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      The model cost override's currency (ISO-4217 code).
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        unit_amount_decimal
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      Minor units (cents for USD) per <code>
        quantity_divisor
      </code>
      
       units. A decimal string with at most 12 decimal places and no exponent, for example <code>
        "0.25"
      </code>
      
      .
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        quantity_divisor
      </code>
    </td>
    
    <td>
      <code>
        integer
      </code>
    </td>
    
    <td>
      The model cost override's quantity divisor.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        effective_from
      </code>
    </td>
    
    <td>
      <code>
        string · ISO-8601
      </code>
    </td>
    
    <td>
      The model cost override's effective from.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        effective_to
      </code>
    </td>
    
    <td>
      <code>
        string · ISO-8601
      </code>
    </td>
    
    <td>
      The model cost override's effective to.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        note
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      A note about the model cost override.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        created_at
      </code>
    </td>
    
    <td>
      <code>
        string · ISO-8601
      </code>
    </td>
    
    <td>
      When the model cost override was created (ISO-8601 UTC).
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        deleted
      </code>
    </td>
    
    <td>
      <code>
        boolean
      </code>
    </td>
    
    <td>
      Present and true on a delete response.
    </td>
  </tr>
</tbody>
</table>

## Status codes

<table>
<thead>
  <tr>
    <th>
      Status
    </th>
    
    <th>
      Meaning
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        200
      </code>
    </td>
    
    <td>
      The ended row.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        400
      </code>
    </td>
    
    <td>
      <code>
        effective_to
      </code>
      
       is in the past or before the start.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        404
      </code>
    </td>
    
    <td>
      No such cost.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        409
      </code>
    </td>
    
    <td>
      The cost has already ended, or the new end overlaps another cost.
    </td>
  </tr>
</tbody>
</table>
</template>

<template v-slot:request="">

```bash [Request]
curl -X POST "$TMBILLING_URL/v1/organization/model_cost_overrides/mco_XXXXXXXXXXXX01/end" \
  -H "Authorization: Bearer $TMBILLING_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{
    "effective_to": "2026-04-14T09:30:00Z"
  }'
```

</template>

<template v-slot:response="">
<code-group>

```json [200 OK]
{
  "object": "model_cost_override",
  "id": "mco_XXXXXXXXXXXX01",
  "provider": "stripe",
  "model": "flat",
  "token_type": "input",
  "currency": "USD",
  "unit_amount_decimal": "200",
  "quantity_divisor": 1000000,
  "effective_from": "2026-03-14T09:30:00Z",
  "effective_to": "2026-04-14T09:30:00Z",
  "note": null,
  "created_at": "2026-03-14T09:30:00Z",
  "deleted": false
}
```

```json [400 Bad Request]
{
  "error": {
    "type": "invalid_request_error",
    "message": "effective_to is in the past or before the start."
  }
}
```

```json [404 Not Found]
{
  "error": {
    "type": "invalid_request_error",
    "message": "No such cost."
  }
}
```

```json [409 Conflict]
{
  "error": {
    "type": "conflict_error",
    "message": "The cost has already ended, or the new end overlaps another cost."
  }
}
```

</code-group>
</template>
</api-operation>


## Sitemap

See the full [sitemap](https://twominutebilling.com/sitemap.md) for all pages.