Getting unexpected bill while using a free tier Amazon Rekognition

While AWS offers a Free Tier for many services, including Amazon Rekognition, it's important to understand that there are specific limits and conditions even within the Free Tier. In the case of Amazon Rekognition, unexpected charges can occur if you exceed the Free Tier limits or use features that are not covered by the Free Tier.

To address your situation:

1. Check Free Tier limits: Review the specific Free Tier limits for Amazon Rekognition. Make sure you haven't exceeded the number of images processed or API calls allowed under the Free Tier.

2. Review usage details: Examine your AWS Billing Dashboard and Cost Explorer to see a detailed breakdown of your Rekognition usage. This will help you identify which specific operations led to charges.

3. Consider feature usage: Some Rekognition features might not be covered by the Free Tier. For example, video analysis could potentially incur charges even during the Free Tier period.

4. Monitor usage regularly: Set up AWS Budgets or Free Tier usage alerts to notify you when you're approaching or exceeding Free Tier limits.

5. Optimize your usage: If possible, try to optimize your use of Rekognition to stay within Free Tier limits. This might involve reducing the number of API calls or the amount of data processed.

6. Contact AWS Support: If you believe you've been charged incorrectly, or if you need clarification on your bill, don't hesitate to contact AWS Support. They can review your account and provide detailed explanations of any charges.

Remember, while the Free Tier is designed to allow you to explore and learn about AWS services, it's crucial to monitor your usage carefully to avoid unexpected charges. Always review the terms and conditions of the Free Tier for each service you're using.
Sources
Been Bill, but on the Free Tier | AWS re:Post
Billing misunderstand | AWS re:Post
About recent bill | AWS re:Post