Update rate-limits.mdx

Update embeddings related quotas. Add detail about Free Tier quotas limitations.

Author: fpagny

ai-data/generative-apis/reference-content/rate-limits.mdx

@@ -17,9 +17,13 @@ Any model served through Scaleway Generative APIs gets limited by:
 - Tokens per minute
 - Queries per minute
 
+<Message type="tip">
+These limits only apply if you created a Scaleway Account and registered a valid payment method. Otherwise, stricter limits apply to ensure usage stays within Free Tier only.
+</Message>
+
 ### Chat models
 
-| Model string | Requests per minute | Tokens per minute |
+| Model string | Requests per minute | Total Tokens per minute |
 |-----------------|-----------------|-----------------|
 | `llama-3.1-8b-instruct` | 300 | 100K |
 | `llama-3.1-70b-instruct` | 300 | 100K |
@@ -29,10 +33,10 @@ Any model served through Scaleway Generative APIs gets limited by:
 
 ### Embedding models 
 
-| Model string | Requests per minute | Tokens per minute |
+| Model string | Requests per minute | Input Tokens per minute |
 |-----------------|-----------------|-----------------|
-| `sentence-t5-xxl` | 600 | 1M |
-| `bge-multilingual-gemma2` | 600 | 1M |
+| `sentence-t5-xxl` | 100 | 200K |
+| `bge-multilingual-gemma2` | 100 | 200K |
 
 ## Why do we set rate limits?
 
@@ -41,4 +45,4 @@ These limits safeguard against abuse or misuse of Scaleway Generative APIs, help
 ## How can I increase the rate limits?
 
 We actively monitor usage and will improve rates based on feedback.
-If you need to increase your rate limits, contact us via the support team, providing details on the model used and specific use case.
+If you need to increase your rate limits, contact us via the support team, providing details on the model used and specific use case.