1. Cost Savings:

Google’s official Translate API is a paid service, charging based on usage. Unofficial APIs may offer access to similar translation features at no cost or with fewer restrictions, making them attractive for developers or businesses with limited budgets.

2. No Usage Limits:

The official API has strict rate limits and quotas on the number of requests or characters that can be processed per day. Unofficial APIs may either reduce or eliminate these limits, allowing for more extensive usage without throttling.

3. Simpler Authentication:

Official APIs typically require authentication using an API key, OAuth, or other forms of authorization, which can add complexity. Unofficial APIs may simplify this process by not requiring an API key, making integration quicker and easier.

4. Bypass Regional Restrictions:

The official API may be restricted in certain regions or may not support certain languages in specific geographic areas. Unofficial APIs may bypass these restrictions, offering access where the official API is unavailable.

5. No Subscription Commitment:

Using the official API typically involves a subscription with usage-based billing. Unofficial alternatives can be more appealing for those needing a one-time solution or temporary project without long-term financial commitment.