diff --git a/docs/gen-ai/gen-ai-events.md b/docs/gen-ai/gen-ai-events.md
index 1c0d6e0de9..e3b1a40c0a 100644
--- a/docs/gen-ai/gen-ai-events.md
+++ b/docs/gen-ai/gen-ai-events.md
@@ -122,7 +122,7 @@ The event name MUST be `gen_ai.assistant.message`.
 |--------------|--------------------------------|----------------------------------------|-------------------------------------------------|-------------------|
 | `role`       | string                         | The actual role of the message author as passed in the message. | `"assistant"`, `"bot"` | `Conditionally Required`: if available and if not equal to `assistant` |
 | `content`    | `AnyValue`                     | The contents of the assistant message.                          | `The weather in Paris is rainy and overcast, with temperatures around 57°F` | `Opt-In` |
-| `tool_calls` | [ToolCall](#toolcall-object)[] | The tool calls generated by the model, such as function calls.  | `[{"id":"call_mszuSIzqtI65i1wAUOE8w5H4", "function":{"name":"get_weather", "arguments":{"location":"Paris"}}, "type":"function"}]` | `Conditionally Required`: if available |
+| `tool_calls` | [ToolCall](#toolcall-object)[] | The tool calls generated by the model, such as function calls.  | `[{"id":"call_mszuSIzqtI65i1wAUOE8w5H4", "function":{"name":"get_weather", "arguments":"{\"location\":\"Paris\"}"}, "type":"function"}]` | `Conditionally Required`: if available |
 
 ### `ToolCall` object
 
@@ -130,14 +130,14 @@ The event name MUST be `gen_ai.assistant.message`.
 |------------|-----------------------------|------------------------------------|-------------------------------------------------|-------------------|
 | `id`       | string                      | The id of the tool call            | `call_mszuSIzqtI65i1wAUOE8w5H4`                 | `Required`        |
 | `type`     | string                      | The type of the tool               | `function`                                      | `Required`        |
-| `function` | [Function](#function-object)| The function that the model called | `{"name":"get_weather", "arguments":{"location":"Paris"}}` | `Required` |
+| `function` | [Function](#function-object)| The function that the model called | `{"name":"get_weather", "arguments":"{\"location\":\"Paris\"}"}` | `Required` |
 
 ### `Function` object
 
 | Body Field  | Type       | Description                            | Examples                   | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) |
 |-------------|------------|----------------------------------------|----------------------------|-------------------|
 | `name`      | string     | The name of the function to call       | `get_weather` | `Required`        |
-| `arguments` | `AnyValue` | The arguments to pass the the function | `{"location": "Paris"}`    | `Opt-In`          |
+| `arguments` | `AnyValue` | The arguments to pass the the function | `{\"location\":\"Paris\"}`    | `Opt-In`          |
 
 ## Tool event
 
@@ -175,7 +175,7 @@ Choice event body has the following fields:
 |----------------|--------------------------------|-----------------------------------------------|---------------------------------|-------------------|
 | `role`         | string                         | The actual role of the message author as passed in the message. | `"assistant"`, `"bot"` | `Conditionally Required`: if available and if not equal to `assistant` |
 | `content`      | `AnyValue`                     | The contents of the assistant message.        | `The weather in Paris is rainy and overcast, with temperatures around 57°F` | `Opt-In` |
-| `tool_calls`   | [ToolCall](#toolcall-object)[] | The tool calls generated by the model, such as function calls. | `[{"id":"call_mszuSIzqtI65i1wAUOE8w5H4", "function":{"name":"get_weather", "arguments":{"location":"Paris"}}, "type":"function"}]` | `Conditionally Required`: if available |
+| `tool_calls`   | [ToolCall](#toolcall-object)[] | The tool calls generated by the model, such as function calls. | `[{"id":"call_mszuSIzqtI65i1wAUOE8w5H4", "function":{"name":"get_weather", "arguments":"{\"location\":\"Paris\"}"}, "type":"function"}]` | `Conditionally Required`: if available |
 
 ## Custom events
 
@@ -309,7 +309,7 @@ Here's the telemetry generated for each step in this scenario:
      |   Property          |                     Value                             |
      |---------------------|-------------------------------------------------------|
      | `gen_ai.system`     | `"openai"`                                            |
-     | Event body (with content)    | `{"index":0,"finish_reason":"tool_calls","message":{"tool_calls":[{"id":"call_VSPygqKTWdrhaFErNvMV18Yl","function":{"name":"get_weather","arguments":{"location":"Paris"}},"type":"function"}]}` |
+     | Event body (with content)    | `{"index":0,"finish_reason":"tool_calls","message":{"tool_calls":[{"id":"call_VSPygqKTWdrhaFErNvMV18Yl","function":{"name":"get_weather","arguments":"{\"location\":\"Paris\"}"},"type":"function"}]}` |
      | Event body (without content) | `{"index":0,"finish_reason":"tool_calls","message":{"tool_calls":[{"id":"call_VSPygqKTWdrhaFErNvMV18Yl","function":{"name":"get_weather"},"type":"function"}]}` |
 
 **GenAI Client span 2:**
@@ -344,7 +344,7 @@ Here's the telemetry generated for each step in this scenario:
      |   Property                       |                     Value                                                                                                                  |
      |----------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------|
      | `gen_ai.system`                  | `"openai"`                                                                                                                                 |
-     | Event body (content enabled)     | `{"tool_calls":[{"id":"call_VSPygqKTWdrhaFErNvMV18Yl","function":{"name":"get_weather","arguments":{"location":"Paris"}},"type":"function"}]}` |
+     | Event body (content enabled)     | `{"tool_calls":[{"id":"call_VSPygqKTWdrhaFErNvMV18Yl","function":{"name":"get_weather","arguments":"{\"location\":\"Paris\"}"},"type":"function"}]}` |
      | Event body (content not enabled) | `{"tool_calls":[{"id":"call_VSPygqKTWdrhaFErNvMV18Yl","function":{"name":"get_weather"},"type":"function"}]}`                 |
 
   3. `gen_ai.tool.message`
diff --git a/model/gen-ai/events.yaml b/model/gen-ai/events.yaml
index c819d5a409..669a2b16bb 100644
--- a/model/gen-ai/events.yaml
+++ b/model/gen-ai/events.yaml
@@ -134,8 +134,14 @@ groups:
                   type: undefined
                   stability: experimental
                   brief: >
-                    The arguments of the function.
-                  examples: ['{"location": "Paris"}']
+                    The arguments of the function as provided in the LLM response.
+                  note: >
+                    Models usually return arguments as a JSON string. In this case, it's
+                    RECOMMENDED to provide arguments as is without attempting to deserialize them.
+
+                    Semantic conventions for individual systems MAY specify a different type for
+                    arguments field.
+                  examples: ['{\"location\": \"Paris\"}']
                   requirement_level: opt_in
 
   - id: gen_ai.tool.message
@@ -286,5 +292,12 @@ groups:
                   type: undefined
                   stability: experimental
                   brief: >
-                    The arguments of the function.
+                    The arguments of the function as provided in the LLM response.
+                  note: >
+                    Models usually return arguments as a JSON string. In this case, it's
+                    RECOMMENDED to provide arguments as is without attempting to deserialize them.
+
+                    Semantic conventions for individual systems MAY specify a different type for
+                    arguments field.
+                  examples: ['{\"location\": \"Paris\"}']
                   requirement_level: opt_in