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chore: document additional property mapping for otel spans (#1263)
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@Steffen911
Steffen911 authored Feb 7, 2025
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Expand Up @@ -197,16 +197,21 @@ All attributes and resourceAttributes are available within the Langfuse `metadat

Below, we share a non-exhaustive list of mappings that Langfuse applies:

| OpenTelemetry Attribute | Langfuse Property | Description |
| ----------------------- | ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `gen_ai.usage.cost` | `costDetails.total` | The total [cost](/docs/model-usage-and-cost) of the request. |
| `gen_ai.usage.*` | `usageDetails.*` | Maps all keys within [usage](/docs/model-usage-and-cost) aside from `cost` to `usageDetails`. Token properties are simplified to `input`, `output`, and `total`. |
| `gen_ai.request.model` | `model` | The [model](/docs/model-usage-and-cost) used for the request. |
| `gen_ai.response.model` | `model` | The [model](/docs/model-usage-and-cost) used for the response. |
| `gen_ai.request.*` | `modelParameters` | Maps all keys within request to `modelParameters`. |
| `langfuse.session.id` | `sessionId` | The [session ID](/docs/tracing-features/sessions) for the request. |
| `session.id` | `sessionId` | The [session ID](/docs/tracing-features/sessions) for the request. |
| `langfuse.user.id` | `userId` | The [user ID](/docs/tracing-features/users) for the request. |
| `user.id` | `userId` | The [user ID](/docs/tracing-features/users) for the request. |
| `gen_ai.prompt` | `input` | Input field. Deprecated by OpenTelemetry as event properties should be preferred. |
| `gen_ai.completion` | `output` | Output field. Deprecated by OpenTelemetry as event properties should be preferred. |
| OpenTelemetry Attribute | Langfuse Property | Description |
|-------------------------------|---------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `gen_ai.usage.cost` | `costDetails.total` | The total [cost](/docs/model-usage-and-cost) of the request. |
| `gen_ai.usage.*` | `usageDetails.*` | Maps all keys within [usage](/docs/model-usage-and-cost) aside from `cost` to `usageDetails`. Token properties are simplified to `input`, `output`, and `total`. |
| `llm.token_count.*` | `usageDetails.*` | Maps all keys within [usage](/docs/model-usage-and-cost) to `usageDetails`. Token properties are simplified to `input`, `output`, and `total`. |
| `gen_ai.request.model` | `model` | The [model](/docs/model-usage-and-cost) used for the request. |
| `gen_ai.response.model` | `model` | The [model](/docs/model-usage-and-cost) used for the response. |
| `llm.model_name` | `model` | The [model](/docs/model-usage-and-cost) used for the request. |
| `gen_ai.request.*` | `modelParameters` | Maps all keys within request to `modelParameters`. |
| `llm.invocation_parameters.*` | `modelParameters` | Maps all keys within request to `modelParameters`. |
| `langfuse.session.id` | `sessionId` | The [session ID](/docs/tracing-features/sessions) for the request. |
| `session.id` | `sessionId` | The [session ID](/docs/tracing-features/sessions) for the request. |
| `langfuse.user.id` | `userId` | The [user ID](/docs/tracing-features/users) for the request. |
| `user.id` | `userId` | The [user ID](/docs/tracing-features/users) for the request. |
| `gen_ai.prompt` | `input` | Input field. Deprecated by OpenTelemetry as event properties should be preferred. |
| `gen_ai.completion` | `output` | Output field. Deprecated by OpenTelemetry as event properties should be preferred. |
| `input.value` | `input` | Input field. Used by OpenInference based traces. |
| `output.value` | `output` | Output field. Used by OpenInference based traces. |

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