costs-update (#22385)

Author: daisyfaithauma

src/content/docs/ai-gateway/observability/costs.mdx

@@ -5,21 +5,15 @@ sidebar:
   order: 2
 ---
 
-## Supported Providers
+Cost metrics are only available for endpoints where the models return token data and the model name in their responses.
 
-AI Gateway currently supports cost metrics from the following providers:
+## Track costs across AI providers
 
-- Anthropic
-- Azure OpenAI
-- Cohere
-- Google AI Studio
-- Groq
-- Mistral
-- OpenAI
-- Perplexity
-- Replicate
+AI Gateway makes it easier to monitor and estimate token based costs across all your AI providers. This can help you:
 
-Cost metrics are only available for endpoints where the models return token data and the model name in their responses.
+- Understand and compare usage costs between providers.
+- Monitor trends and estimate spend using consistent metrics.
+- Apply custom pricing logic to match negotiated rates.
 
 :::note[Note]