GenAI: Rename prompt and completion tokens attributes to input and output

.chloggen/1200.yaml

@@ -0,0 +1,6 @@
+change_type: enhancement
+component: gen_ai
+note: >
+  Rename `gen_ai.usage.prompt_tokens` to `gen_ai.usage.input_tokens` and `gen_ai.usage.completion_tokens` to `gen_ai.usage.output_tokens`
+  to align terminology between spans and metrics.
+issues: [ 1200 ]

docs/attributes-registry/gen-ai.md

@@ -6,6 +6,9 @@
 
 # Gen AI
 
+- [Gen Ai](#gen-ai-attributes)
+- [Gen Ai Deprecated](#gen-ai-deprecated-attributes)
+
 ## Gen AI Attributes
 
 This document defines the attributes used to describe telemetry in the context of Generative Artificial Intelligence (GenAI) Models requests and responses.
@@ -28,8 +31,8 @@ This document defines the attributes used to describe telemetry in the context o
 | `gen_ai.response.model`            | string   | The name of the model that generated the response.                                               | `gpt-4-0613`                                                            | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `gen_ai.system`                    | string   | The Generative AI product as identified by the client or server instrumentation. [3]             | `openai`                                                                | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `gen_ai.token.type`                | string   | The type of token being counted.                                                                 | `input`; `output`                                                       | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
-| `gen_ai.usage.completion_tokens`   | int      | The number of tokens used in the GenAI response (completion).                                    | `180`                                                                   | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
-| `gen_ai.usage.prompt_tokens`       | int      | The number of tokens used in the GenAI input or prompt.                                          | `100`                                                                   | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `gen_ai.usage.input_tokens`        | int      | The number of tokens used in the GenAI input or prompt.                                          | `100`                                                                   | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `gen_ai.usage.output_tokens`       | int      | The number of tokens used in the GenAI response (completion).                                    | `180`                                                                   | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 
 **[1]:** It's RECOMMENDED to format completions as JSON string matching [OpenAI messages format](https://platform.openai.com/docs/guides/text-generation)
 
@@ -53,3 +56,12 @@ For custom model, a custom friendly name SHOULD be used. If none of these option
 | -------- | ------------------------------------------ | ---------------------------------------------------------------- |
 | `input`  | Input tokens (prompt, input, etc.)         | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | `output` | Output tokens (completion, response, etc.) | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+## Gen AI Deprecated Attributes
+
+Describes deprecated `gen_ai` attributes.
+
+| Attribute                        | Type | Description                                           | Examples | Stability                                                                                                          |
+| -------------------------------- | ---- | ----------------------------------------------------- | -------- | ------------------------------------------------------------------------------------------------------------------ |
+| `gen_ai.usage.completion_tokens` | int  | Deprecated, use `gen_ai.usage.output_tokens` instead. | `42`     | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `gen_ai.usage.output_tokens` attribute. |
+| `gen_ai.usage.prompt_tokens`     | int  | Deprecated, use `gen_ai.usage.input_tokens` instead.  | `42`     | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `gen_ai.usage.input_tokens` attribute.  |

docs/gen-ai/gen-ai-spans.md

@@ -57,8 +57,8 @@ These attributes track input data and metadata for a request to an GenAI model.
 | [`gen_ai.response.finish_reasons`](/docs/attributes-registry/gen-ai.md) | string[] | Array of reasons the model stopped generating tokens, corresponding to each generation received. | `["stop"]` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | [`gen_ai.response.id`](/docs/attributes-registry/gen-ai.md) | string | The unique identifier for the completion. | `chatcmpl-123` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | [`gen_ai.response.model`](/docs/attributes-registry/gen-ai.md) | string | The name of the model that generated the response. [3] | `gpt-4-0613` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
-| [`gen_ai.usage.completion_tokens`](/docs/attributes-registry/gen-ai.md) | int | The number of tokens used in the GenAI response (completion). | `180` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
-| [`gen_ai.usage.prompt_tokens`](/docs/attributes-registry/gen-ai.md) | int | The number of tokens used in the GenAI input or prompt. | `100` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| [`gen_ai.usage.input_tokens`](/docs/attributes-registry/gen-ai.md) | int | The number of tokens used in the GenAI input or prompt. | `100` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| [`gen_ai.usage.output_tokens`](/docs/attributes-registry/gen-ai.md) | int | The number of tokens used in the GenAI response (completion). | `180` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 
 **[1]:** The name of the GenAI model a request is being made to. If the model is supplied by a vendor, then the value must be the exact name of the model requested. If the model is a fine-tuned custom model, the value should have a more specific name than the base model that's been fine-tuned.
 

model/registry/deprecated/gen-ai.yaml

@@ -0,0 +1,17 @@
+groups:
+  - id: registry.gen_ai.deprecated
+    type: attribute_group
+    brief: Describes deprecated `gen_ai` attributes.
+    attributes:
+      - id: gen_ai.usage.prompt_tokens
+        type: int
+        stability: experimental
+        deprecated: Replaced by `gen_ai.usage.input_tokens` attribute.
+        brief: "Deprecated, use `gen_ai.usage.input_tokens` instead."
+        examples: [42]
+      - id: gen_ai.usage.completion_tokens
+        type: int
+        stability: experimental
+        deprecated: Replaced by `gen_ai.usage.output_tokens` attribute.
+        brief: "Deprecated, use `gen_ai.usage.output_tokens` instead."
+        examples: [42]

model/registry/gen-ai.yaml

@@ -90,12 +90,12 @@ groups:
         type: string[]
         brief: Array of reasons the model stopped generating tokens, corresponding to each generation received.
         examples: ['stop']
-      - id: usage.prompt_tokens
+      - id: usage.input_tokens
         stability: experimental
         type: int
         brief: The number of tokens used in the GenAI input or prompt.
         examples: [100]
-      - id: usage.completion_tokens
+      - id: usage.output_tokens
         stability: experimental
         type: int
         brief: The number of tokens used in the GenAI response (completion).

model/trace/gen-ai.yaml

@@ -36,9 +36,9 @@ groups:
           fine-tuned custom model, the value should have a more specific name than the base model that's been fine-tuned.
       - ref: gen_ai.response.finish_reasons
         requirement_level: recommended
-      - ref: gen_ai.usage.prompt_tokens
+      - ref: gen_ai.usage.input_tokens
         requirement_level: recommended
-      - ref: gen_ai.usage.completion_tokens
+      - ref: gen_ai.usage.output_tokens
         requirement_level: recommended
     events:
       - gen_ai.content.prompt

schema-next.yaml

@@ -11,6 +11,11 @@ versions:
               messaging.rocketmq.client_group: messaging.consumer.group.name
               messaging.evenhubs.consumer.group: messaging.consumer.group.name
               message.servicebus.destination.subscription_name: messaging.destination.subscription.name
+        # https://github.com/open-telemetry/semantic-conventions/pull/1200
+        - rename_attributes:
+            attribute_map:
+              gen_ai.usage.completion_tokens: gen_ai.usage.output_tokens
+              gen_ai.usage.prompt_tokens: gen_ai.usage.input_tokens
     spans:
       changes:
         # https://github.com/open-telemetry/semantic-conventions/pull/1002