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module  pixeltable.functions.openai

Pixeltable UDFs that wrap various endpoints from the OpenAI API. In order to use them, you must first pip install openai and configure your OpenAI credentials, as described in the Working with OpenAI tutorial.

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func  invoke_tools()

Signature
invoke_tools(
    tools: pixeltable.func.tools.Tools,
    response: pixeltable.exprs.expr.Expr
) -> pixeltable.exprs.inline_expr.InlineDict
Converts an OpenAI response dict to Pixeltable tool invocation format and calls tools._invoke().

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udf  chat_completions()

Signature
chat_completions(
    messages: pxt.Json,
    *,
    model: pxt.String,
    model_kwargs: pxt.Json | None = None,
    tools: pxt.Json | None = None,
    tool_choice: pxt.Json | None = None
) -> pxt.Json
Creates a model response for the given chat conversation. Equivalent to the OpenAI chat/completions API endpoint. For additional details, see: https://platform.openai.com/docs/guides/chat-completions Request throttling: Uses the rate limit-related headers returned by the API to throttle requests adaptively, based on available request and token capacity. No configuration is necessary. Requirements:
  • pip install openai
Parameters:
  • messages (pxt.Json): A list of messages to use for chat completion, as described in the OpenAI API documentation.
  • model (pxt.String): The model to use for chat completion.
  • model_kwargs (pxt.Json | None): Additional keyword args for the OpenAI chat/completions API. For details on the available parameters, see: https://platform.openai.com/docs/api-reference/chat/create
Returns:
  • pxt.Json: A dictionary containing the response and other metadata.
Examples: Add a computed column that applies the model gpt-4o-mini to an existing Pixeltable column tbl.prompt of the table tbl: 
messages = [
    {'role': 'system', 'content': 'You are a helpful assistant.'},
    {'role': 'user', 'content': tbl.prompt},
]
tbl.add_computed_column(
    response=chat_completions(messages, model='gpt-4o-mini')
)

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udf  embeddings()

Signature
embeddings(
    input: pxt.String,
    *,
    model: pxt.String,
    model_kwargs: pxt.Json | None = None
) -> pxt.Array[(None,), Float]
Creates an embedding vector representing the input text. Equivalent to the OpenAI embeddings API endpoint. For additional details, see: https://platform.openai.com/docs/guides/embeddings Request throttling: Uses the rate limit-related headers returned by the API to throttle requests adaptively, based on available request and token capacity. No configuration is necessary. Requirements:
  • pip install openai
Parameters:
  • input (pxt.String): The text to embed.
  • model (pxt.String): The model to use for the embedding.
  • model_kwargs (pxt.Json | None): Additional keyword args for the OpenAI embeddings API. For details on the available parameters, see: https://platform.openai.com/docs/api-reference/embeddings
Returns:
  • pxt.Array[(None,), Float]: An array representing the application of the given embedding to input.
Examples: Add a computed column that applies the model text-embedding-3-small to an existing Pixeltable column tbl.text of the table tbl: 
tbl.add_computed_column(
    embed=embeddings(tbl.text, model='text-embedding-3-small')
)
Add an embedding index to an existing column text, using the model text-embedding-3-small: 
tbl.add_embedding_index(
    embedding=embeddings.using(model='text-embedding-3-small')
)

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udf  image_generations()

Signature
image_generations(
    prompt: pxt.String,
    *,
    model: pxt.String = 'dall-e-2',
    model_kwargs: pxt.Json | None = None
) -> pxt.Image
Creates an image given a prompt. Equivalent to the OpenAI images/generations API endpoint. For additional details, see: https://platform.openai.com/docs/guides/images Request throttling: Applies the rate limit set in the config (section openai.rate_limits; use the model id as the key). If no rate limit is configured, uses a default of 600 RPM. Requirements:
  • pip install openai
Parameters:
  • prompt (pxt.String): Prompt for the image.
  • model (pxt.String): The model to use for the generations.
  • model_kwargs (pxt.Json | None): Additional keyword args for the OpenAI images/generations API. For details on the available parameters, see: https://platform.openai.com/docs/api-reference/images/create
Returns:
  • pxt.Image: The generated image.
Examples: Add a computed column that applies the model dall-e-2 to an existing Pixeltable column tbl.text of the table tbl: 
tbl.add_computed_column(
    gen_image=image_generations(tbl.text, model='dall-e-2')
)

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udf  moderations()

Signature
moderations(
    input: pxt.String,
    *,
    model: pxt.String = 'omni-moderation-latest'
) -> pxt.Json
Classifies if text is potentially harmful. Equivalent to the OpenAI moderations API endpoint. For additional details, see: https://platform.openai.com/docs/guides/moderation Request throttling: Applies the rate limit set in the config (section openai.rate_limits; use the model id as the key). If no rate limit is configured, uses a default of 600 RPM. Requirements:
  • pip install openai
Parameters:
  • input (pxt.String): Text to analyze with the moderations model.
  • model (pxt.String): The model to use for moderations.
Returns:
  • pxt.Json: Details of the moderations results.
Examples: Add a computed column that applies the model text-moderation-stable to an existing Pixeltable column tbl.input of the table tbl: 
tbl.add_computed_column(
    moderations=moderations(tbl.text, model='text-moderation-stable')
)

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udf  speech()

Signature
speech(
    input: pxt.String,
    *,
    model: pxt.String,
    voice: pxt.String,
    model_kwargs: pxt.Json | None = None
) -> pxt.Audio
Generates audio from the input text. Equivalent to the OpenAI audio/speech API endpoint. For additional details, see: https://platform.openai.com/docs/guides/text-to-speech Request throttling: Applies the rate limit set in the config (section openai.rate_limits; use the model id as the key). If no rate limit is configured, uses a default of 600 RPM. Requirements:
  • pip install openai
Parameters:
  • input (pxt.String): The text to synthesize into speech.
  • model (pxt.String): The model to use for speech synthesis.
  • voice (pxt.String): The voice profile to use for speech synthesis. Supported options include: alloy, echo, fable, onyx, nova, and shimmer.
  • model_kwargs (pxt.Json | None): Additional keyword args for the OpenAI audio/speech API. For details on the available parameters, see: https://platform.openai.com/docs/api-reference/audio/createSpeech
Returns:
  • pxt.Audio: An audio file containing the synthesized speech.
Examples: Add a computed column that applies the model tts-1 to an existing Pixeltable column tbl.text of the table tbl: 
tbl.add_computed_column(
    audio=speech(tbl.text, model='tts-1', voice='nova')
)

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udf  transcriptions()

Signature
transcriptions(
    audio: pxt.Audio,
    *,
    model: pxt.String,
    model_kwargs: pxt.Json | None = None
) -> pxt.Json
Transcribes audio into the input language. Equivalent to the OpenAI audio/transcriptions API endpoint. For additional details, see: https://platform.openai.com/docs/guides/speech-to-text Request throttling: Applies the rate limit set in the config (section openai.rate_limits; use the model id as the key). If no rate limit is configured, uses a default of 600 RPM. Requirements:
  • pip install openai
Parameters: Returns:
  • pxt.Json: A dictionary containing the transcription and other metadata.
Examples: Add a computed column that applies the model whisper-1 to an existing Pixeltable column tbl.audio of the table tbl: 
tbl.add_computed_column(
    transcription=transcriptions(
        tbl.audio, model='whisper-1', language='en'
    )
)

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udf  translations()

Signature
translations(
    audio: pxt.Audio,
    *,
    model: pxt.String,
    model_kwargs: pxt.Json | None = None
) -> pxt.Json
Translates audio into English. Equivalent to the OpenAI audio/translations API endpoint. For additional details, see: https://platform.openai.com/docs/guides/speech-to-text Request throttling: Applies the rate limit set in the config (section openai.rate_limits; use the model id as the key). If no rate limit is configured, uses a default of 600 RPM. Requirements:
  • pip install openai
Parameters: Returns:
  • pxt.Json: A dictionary containing the translation and other metadata.
Examples: Add a computed column that applies the model whisper-1 to an existing Pixeltable column tbl.audio of the table tbl: 
tbl.add_computed_column(
    translation=translations(tbl.audio, model='whisper-1', language='en')
)

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udf  vision()

Signature
vision(
    prompt: pxt.String,
    image: pxt.Image,
    *,
    model: pxt.String,
    model_kwargs: pxt.Json | None = None
) -> pxt.String
Analyzes an image with the OpenAI vision capability. This is a convenience function that takes an image and prompt, and constructs a chat completion request that utilizes OpenAI vision. For additional details, see: https://platform.openai.com/docs/guides/vision Request throttling: Uses the rate limit-related headers returned by the API to throttle requests adaptively, based on available request and token capacity. No configuration is necessary. Requirements:
  • pip install openai
Parameters:
  • prompt (pxt.String): A prompt for the OpenAI vision request.
  • image (pxt.Image): The image to analyze.
  • model (pxt.String): The model to use for OpenAI vision.
Returns:
  • pxt.String: The response from the OpenAI vision API.
Examples: Add a computed column that applies the model gpt-4o-mini to an existing Pixeltable column tbl.image of the table tbl: 
tbl.add_computed_column(
    response=vision(
        "What's in this image?", tbl.image, model='gpt-4o-mini'
    )
)