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# Semantic conventions for OpenAI operations

**Status**: [Experimental][DocumentStatus]

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- [OpenAI Spans](#openai-spans)
- [OpenAI Metrics](#openai-metrics)
  - [Metric: `gen_ai.client.token.usage`](#metric-gen_aiclienttokenusage)
  - [Metric: `gen_ai.client.operation.duration`](#metric-gen_aiclientoperationduration)

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The Semantic Conventions for [OpenAI](https://openai.com/) extend and override the semantic conventions
for [Gen AI Spans](gen-ai-spans.md) and [Gen AI Metrics](gen-ai-metrics.md).

`gen_ai.system` MUST be set to `"openai"`.

## OpenAI Spans

These attributes track input data and metadata for a request to an OpenAI model. The attributes include general Generative AI
attributes and ones specific the OpenAI.

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| Attribute  | Type | Description  | Examples  | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`gen_ai.operation.name`](/docs/attributes-registry/gen-ai.md) | string | The name of the operation being performed. [1] | `chat`; `text_completion`; `embeddings` | `Required` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.model`](/docs/attributes-registry/gen-ai.md) | string | The name of the GenAI model a request is being made to. [2] | `gpt-4` | `Required` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`error.type`](/docs/attributes-registry/error.md) | string | Describes a class of error the operation ended with. [3] | `timeout`; `java.net.UnknownHostException`; `server_certificate_invalid`; `500` | `Conditionally Required` if the operation ended in an error | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`gen_ai.openai.request.response_format`](/docs/attributes-registry/gen-ai.md) | string | The response format that is requested. | `json` | `Conditionally Required` if the request includes a response_format | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.openai.request.service_tier`](/docs/attributes-registry/gen-ai.md) | string | The service tier requested. May be a specific tier, default, or auto. | `auto`; `default` | `Conditionally Required` [4] | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.openai.response.service_tier`](/docs/attributes-registry/gen-ai.md) | string | The service tier used for the response. | `scale`; `default` | `Conditionally Required` [5] | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.seed`](/docs/attributes-registry/gen-ai.md) | int | Requests with same seed value more likely to return same result. | `100` | `Conditionally Required` if appliable and if the request includes a seed | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`server.port`](/docs/attributes-registry/server.md) | int | GenAI server port. [6] | `80`; `8080`; `443` | `Conditionally Required` If `server.address` is set. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |
| [`gen_ai.openai.response.system_fingerprint`](/docs/attributes-registry/gen-ai.md) | string | A fingerprint to track any eventual change in the Generative AI environment. | `fp_44709d6fcb` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.encoding_formats`](/docs/attributes-registry/gen-ai.md) | string[] | The encoding formats requested in an embeddings operation, if specified. [7] | `["base64"]`; `["float", "binary"]` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.frequency_penalty`](/docs/attributes-registry/gen-ai.md) | double | The frequency penalty setting for the GenAI request. | `0.1` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.max_tokens`](/docs/attributes-registry/gen-ai.md) | int | The maximum number of tokens the model generates for a request. | `100` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.presence_penalty`](/docs/attributes-registry/gen-ai.md) | double | The presence penalty setting for the GenAI request. | `0.1` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.stop_sequences`](/docs/attributes-registry/gen-ai.md) | string[] | List of sequences that the model will use to stop generating further tokens. | `["forest", "lived"]` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.temperature`](/docs/attributes-registry/gen-ai.md) | double | The temperature setting for the GenAI request. | `0.0` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.request.top_p`](/docs/attributes-registry/gen-ai.md) | double | The top_p sampling setting for the GenAI request. | `1.0` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`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"]`; `["stop", "length"]` | `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. [8] | `gpt-4-0613` | `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 prompt sent to OpenAI. | `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 completions from OpenAI. | `180` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`server.address`](/docs/attributes-registry/server.md) | string | GenAI server address. [9] | `example.com`; `10.1.2.80`; `/tmp/my.sock` | `Recommended` | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |

**[1] `gen_ai.operation.name`:** If one of the predefined values applies, but specific system uses a different name it's RECOMMENDED to document it in the semantic conventions for specific GenAI system and use system-specific name in the instrumentation. If a different name is not documented, instrumentation libraries SHOULD use applicable predefined value.

**[2] `gen_ai.request.model`:** 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.

**[3] `error.type`:** The `error.type` SHOULD match the error code returned by the Generative AI provider or the client library,
the canonical name of exception that occurred, or another low-cardinality error identifier.
Instrumentations SHOULD document the list of errors they report.

**[4] `gen_ai.openai.request.service_tier`:** if the request includes a service_tier and the value is not 'auto'

**[5] `gen_ai.openai.response.service_tier`:** if the response was received and includes a service_tier

**[6] `server.port`:** When observed from the client side, and when communicating through an intermediary, `server.port` SHOULD represent the server port behind any intermediaries, for example proxies, if it's available.

**[7] `gen_ai.request.encoding_formats`:** In some GenAI systems the encoding formats are called embedding types. Also, some GenAI systems only accept a single format per request.

**[8] `gen_ai.response.model`:** If available. The name of the GenAI model that provided the response. If the model is supplied by a vendor, then the value must be the exact name of the model actually used. 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.

**[9] `server.address`:** When observed from the client side, and when communicating through an intermediary, `server.address` SHOULD represent the server address behind any intermediaries, for example proxies, if it's available.

---

`error.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

| Value  | Description | Stability |
|---|---|---|
| `_OTHER` | A fallback error value to be used when the instrumentation doesn't define a custom value. | ![Stable](https://img.shields.io/badge/-stable-lightgreen) |

---

`gen_ai.openai.request.response_format` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

| Value  | Description | Stability |
|---|---|---|
| `json_object` | JSON object response format | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `json_schema` | JSON schema response format | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `text` | Text response format | ![Experimental](https://img.shields.io/badge/-experimental-blue) |

---

`gen_ai.openai.request.service_tier` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

| Value  | Description | Stability |
|---|---|---|
| `auto` | The system will utilize scale tier credits until they are exhausted. | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `default` | The system will utilize the default scale tier. | ![Experimental](https://img.shields.io/badge/-experimental-blue) |

---

`gen_ai.operation.name` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

| Value  | Description | Stability |
|---|---|---|
| `chat` | Chat completion operation such as [OpenAI Chat API](https://platform.openai.com/docs/api-reference/chat) | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `embeddings` | Embeddings operation such as [OpenAI Create embeddings API](https://platform.openai.com/docs/api-reference/embeddings/create) | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `text_completion` | Text completions operation such as [OpenAI Completions API (Legacy)](https://platform.openai.com/docs/api-reference/completions) | ![Experimental](https://img.shields.io/badge/-experimental-blue) |

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## OpenAI Metrics

OpenAI metrics follow [Generative AI metrics](gen-ai-metrics.md) with the noted additional attributes.
Individual systems may include additional system-specific attributes. It is recommended to check system-specific documentation, if available.

### Metric: `gen_ai.client.token.usage`

Reports the usage of tokens following the common [gen_ai.client.token.usage](./gen-ai-metrics.md#metric-gen_aiclienttokenusage) definition.

Additional attributes:

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| Attribute  | Type | Description  | Examples  | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
|---|---|---|---|---|---|
| [`gen_ai.openai.response.service_tier`](/docs/attributes-registry/gen-ai.md) | string | The service tier used for the response. | `scale`; `default` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.openai.response.system_fingerprint`](/docs/attributes-registry/gen-ai.md) | string | A fingerprint to track any eventual change in the Generative AI environment. | `fp_44709d6fcb` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |

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### Metric: `gen_ai.client.operation.duration`

Measures the to complete an operation following the common [gen_ai.client.operation.duration](./gen-ai-metrics.md#metric-gen_aiclientoperationduration) definition.

Additional attributes:

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| Attribute  | Type | Description  | Examples  | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
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| [`gen_ai.openai.response.service_tier`](/docs/attributes-registry/gen-ai.md) | string | The service tier used for the response. | `scale`; `default` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| [`gen_ai.openai.response.system_fingerprint`](/docs/attributes-registry/gen-ai.md) | string | A fingerprint to track any eventual change in the Generative AI environment. | `fp_44709d6fcb` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |

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[DocumentStatus]: https://opentelemetry.io/docs/specs/otel/document-status
