diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c40517406..47b101eecb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@
 - Add `gen_ai.cost_calculation.result` metric to track AI cost calculation outcomes by integration and platform. ([#5560](https://github.com/getsentry/relay/pull/5560))
 - Normalizes and validates trace metric names. ([#5589](https://github.com/getsentry/relay/pull/5589))
 - Add manual category to cost calculation metric origin tag ([#5603](https://github.com/getsentry/relay/pull/5603))
+- Differentiate between reasons for missing cost calculation([#5611](https://github.com/getsentry/relay/pull/5611))
 
 ## 26.1.0
 
diff --git a/relay-event-normalization/src/eap/ai.rs b/relay-event-normalization/src/eap/ai.rs
index d5932befb6..b9ae812395 100644
--- a/relay-event-normalization/src/eap/ai.rs
+++ b/relay-event-normalization/src/eap/ai.rs
@@ -6,7 +6,7 @@ use relay_protocol::Annotated;
 
 use crate::ModelCosts;
 use crate::span::ai;
-use crate::statsd::{map_origin_to_integration, platform_tag};
+use crate::statsd::{Counters, map_origin_to_integration, platform_tag};
 
 /// Normalizes AI attributes.
 ///
@@ -120,7 +120,18 @@ fn normalize_ai_costs(attributes: &mut Attributes, model_costs: Option<&ModelCos
         .and_then(|v| v.as_str())
         .and_then(|model| model_costs?.cost_per_token(model));
 
-    let Some(model_cost) = model_cost else { return };
+    let integration = map_origin_to_integration(origin);
+    let platform_tag = platform_tag(platform);
+
+    let Some(model_cost) = model_cost else {
+        relay_statsd::metric!(
+            counter(Counters::GenAiCostCalculationResult) += 1,
+            result = "calculation_no_model_cost_available",
+            integration = integration,
+            platform = platform_tag,
+        );
+        return;
+    };
 
     let get_tokens = |key| {
         attributes
@@ -137,10 +148,7 @@ fn normalize_ai_costs(attributes: &mut Attributes, model_costs: Option<&ModelCos
         output_reasoning_tokens: get_tokens(GEN_AI_USAGE_OUTPUT_REASONING_TOKENS),
     };
 
-    let integration = map_origin_to_integration(origin);
-    let platform = platform_tag(platform);
-
-    let Some(costs) = ai::calculate_costs(model_cost, tokens, integration, platform) else {
+    let Some(costs) = ai::calculate_costs(model_cost, tokens, integration, platform_tag) else {
         return;
     };
 
diff --git a/relay-event-normalization/src/normalize/span/ai.rs b/relay-event-normalization/src/normalize/span/ai.rs
index 36a3c9c578..d363486fe1 100644
--- a/relay-event-normalization/src/normalize/span/ai.rs
+++ b/relay-event-normalization/src/normalize/span/ai.rs
@@ -94,7 +94,7 @@ pub fn calculate_costs(
     if !tokens.has_usage() {
         relay_statsd::metric!(
             counter(Counters::GenAiCostCalculationResult) += 1,
-            result = "calculation_none",
+            result = "calculation_no_tokens",
             integration = integration,
             platform = platform,
         );
@@ -189,11 +189,20 @@ fn extract_ai_model_cost_data(
     origin: Option<&str>,
     platform: Option<&str>,
 ) {
-    let Some(model_cost) = model_cost else { return };
-
-    let used_tokens = UsedTokens::from_span_data(&*data);
     let integration = map_origin_to_integration(origin);
     let platform = platform_tag(platform);
+
+    let Some(model_cost) = model_cost else {
+        relay_statsd::metric!(
+            counter(Counters::GenAiCostCalculationResult) += 1,
+            result = "calculation_no_model_cost_available",
+            integration = integration,
+            platform = platform,
+        );
+        return;
+    };
+
+    let used_tokens = UsedTokens::from_span_data(&*data);
     let Some(costs) = calculate_costs(model_cost, used_tokens, integration, platform) else {
         return;
     };
@@ -288,6 +297,13 @@ fn extract_ai_data(
             origin,
             platform,
         )
+    } else {
+        relay_statsd::metric!(
+            counter(Counters::GenAiCostCalculationResult) += 1,
+            result = "calculation_no_model_id_available",
+            integration = map_origin_to_integration(origin),
+            platform = platform_tag(platform),
+        );
     }
 }
 
diff --git a/relay-event-normalization/src/statsd.rs b/relay-event-normalization/src/statsd.rs
index 088218f890..427f384b41 100644
--- a/relay-event-normalization/src/statsd.rs
+++ b/relay-event-normalization/src/statsd.rs
@@ -8,7 +8,9 @@ pub enum Counters {
     ///    `calculation_negative`,
     ///    `calculation_zero`,
     ///    `calculation_positive`,
-    ///    `calculation_none`
+    ///    `calculation_no_tokens`
+    ///    `calculation_no_model_cost_available`
+    ///    `calculation_no_model_id_available`
     ///  - `integration`: The integration used for the cost calculation.
     ///  - `platform`: The platform used for the cost calculation.
     GenAiCostCalculationResult,