This repositorty contains Swift implementation over OpenAI public API.
OpenAI is a non-profit artificial intelligence research organization founded in San Francisco, California in 2015. It was created with the purpose of advancing digital intelligence in ways that benefit humanity as a whole and promote societal progress. The organization strives to develop AI (Artificial Intelligence) programs and systems that can think, act and adapt quickly on their own – autonomously. OpenAI's mission is to ensure safe and responsible use of AI for civic good, economic growth and other public benefits; this includes cutting-edge research into important topics such as general AI safety, natural language processing, applied reinforcement learning methods, machine vision algorithms etc.
The OpenAI API can be applied to virtually any task that involves understanding or generating natural language or code. We offer a spectrum of models with different levels of power suitable for different tasks, as well as the ability to fine-tune your own custom models. These models can be used for everything from content generation to semantic search and classification.
OpenAI is available with Swift Package Manager. The Swift Package Manager is a tool for automating the distribution of Swift code and is integrated into the swift compiler. Once you have your Swift package set up, adding OpenAI as a dependency is as easy as adding it to the dependencies value of your Package.swift.
dependencies: [
.package(url: "https://github.com/MacPaw/OpenAI.git", .branch("main"))
]To initialize API instance you need to obtain API token from your Open AI organization.
Once you have a token, you can initialize OpenAI class, which is an entry point to the API.
let openAI = OpenAI(apiToken: "YOUR_TOKEN_HERE")Once token you posses the token, and the instance is initialized you are ready to make requests.
Given a prompt, the model will return one or more predicted completions, and can also return the probabilities of alternative tokens at each position.
Request
struct CompletionsQuery: Codable {
/// ID of the model to use.
let model: Model
/// The prompt(s) to generate completions for, encoded as a string, array of strings, array of tokens, or array of token arrays.
let prompt: String
/// What sampling temperature to use. Higher values means the model will take more risks. Try 0.9 for more creative applications, and 0 (argmax sampling) for ones with a well-defined answer.
let temperature: Double
/// The maximum number of tokens to generate in the completion.
let max_tokens: Int
/// An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered.
let top_p: Double
/// Number between -2.0 and 2.0. Positive values penalize new tokens based on their existing frequency in the text so far, decreasing the model's likelihood to repeat the same line verbatim.
let frequency_penalty: Double
/// Number between -2.0 and 2.0. Positive values penalize new tokens based on whether they appear in the text so far, increasing the model's likelihood to talk about new topics.
let presence_penalty: Double
/// Up to 4 sequences where the API will stop generating further tokens. The returned text will not contain the stop sequence.
let stop: [String]?
}Response
struct CompletionsResult: Codable {
struct Choice: Codable {
public let text: String
public let index: Int
}
let id: String
let object: String
let created: TimeInterval
let model: Model
let choices: [Choice]
}Example
openAI.completions(query: .init(model: .textDavinci_003, prompt: "What is 42?", temperature: 0, max_tokens: 100, top_p: 1, frequency_penalty: 0, presence_penalty: 0, stop: ["\\n"])) { result in
//Handle response here
}(lldb) po result
▿ CompletionsResult
- id : "cmpl-6P9be2p2fQlwB7zTOl0NxCOetGmX3"
- object : "text_completion"
- created : 1671453146.0
- model : OpenAI.Model.textDavinci_003
▿ choices : 1 element
▿ 0 : Choice
- text : "\n\n42 is the answer to the ultimate question of life, the universe, and everything, according to the book The Hitchhiker\'s Guide to the Galaxy."
- index : 0
Review Completions Documentation for more info.
Given a prompt and/or an input image, the model will generate a new image.
As Artificial Intelligence continues to develop, so too does the intriguing concept of Dall-E. Developed by OpenAI, a research lab for artificial intelligence purposes, Dall-E has been classified as an AI system that can generate images based on descriptions provided by humans. With its potential applications spanning from animation and illustration to design and engineering - not to mention the endless possibilities in between - it's easy to see why there is such excitement over this new technology.
Request
struct ImagesQuery: Codable {
/// A text description of the desired image(s). The maximum length is 1000 characters.
let prompt: String
/// The number of images to generate. Must be between 1 and 10.
let n: Int?
/// The size of the generated images. Must be one of 256x256, 512x512, or 1024x1024.
let size: String?
}Response
struct ImagesResult: Codable {
struct URLResult: Codable {
public let url: String
}
let created: TimeInterval
let data: [URLResult]
}Example
openAI.images(query: .init(prompt: "White cat with heterochromia sitting on the kitchen table", n: 1, size: "1024x1024")) { result in
//Handle response here
}(lldb) po result
▿ ImagesResult
- created : 1671453505.0
▿ data : 1 element
▿ 0 : URLResult
- url : "https://oaidalleapiprodscus.blob.core.windows.net/private/org-CWjU5cDIzgCcVjq10pp5yX5Q/user-GoBXgChvLBqLHdBiMJBUbPqF/img-WZVUK2dOD4HKbKwW1NeMJHBd.png?st=2022-12-19T11%3A38%3A25Z&se=2022-12-19T13%3A38%3A25Z&sp=r&sv=2021-08-06&sr=b&rscd=inline&rsct=image/png&skoid=6aaadede-4fb3-4698-a8f6-684d7786b067&sktid=a48cca56-e6da-484e-a814-9c849652bcb3&skt=2022-12-19T09%3A35%3A16Z&ske=2022-12-20T09%3A35%3A16Z&sks=b&skv=2021-08-06&sig=mh52rmtbQ8CXArv5bMaU6lhgZHFBZz/ePr4y%2BJwLKOc%3D"
Generated image
Review Images Documentation for more info.
Get a vector representation of a given input that can be easily consumed by machine learning models and algorithms.
Request
struct EmbeddingsQuery: Codable {
/// ID of the model to use.
let model: Model
/// Input text to get embeddings for
let input: String
}Response
struct EmbeddingsResult: Codable {
struct Embedding: Codable {
public let object: String
public let embedding: [Double]
public let index: Int
}
let data: [Embedding]
}Example
openAI.embeddings(query: .init(model: .textSearchBabbadgeDoc, input: "The food was delicious and the waiter...")) { result in
//Handle response here
}(lldb) po result
▿ EmbeddingsResult
▿ data : 1 element
▿ 0 : Embedding
- object : "embedding"
▿ embedding : 2048 elements
- 0 : 0.0010535449
- 1 : 0.024234328
- 2 : -0.0084999
- 3 : 0.008647452
.......
- 2044 : 0.017536353
- 2045 : -0.005897616
- 2046 : -0.026559394
- 2047 : -0.016633155
- index : 0
(lldb)
Review Embeddings Documentation for more info.
The component comes with several handy utility functions to work with the vectors.
public struct Vector {
/// Returns the similarity between two vectors
///
/// - Parameters:
/// - a: The first vector
/// - b: The second vector
public static func cosineSimilarity(a: [Double], b: [Double]) -> Double {
return dot(a, b) / (mag(a) * mag(b))
}
/// Returns the difference between two vectors. Cosine distance is defined as `1 - cosineSimilarity(a, b)`
///
/// - Parameters:
/// - a: The first vector
/// - b: The second vector
public func cosineDifference(a: [Double], b: [Double]) -> Double {
return 1 - Self.cosineSimilarity(a: a, b: b)
}
}Example
let vector1 = [0.213123, 0.3214124, 0.421412, 0.3214521251, 0.412412, 0.3214124, 0.1414124, 0.3214521251, 0.213123, 0.3214124, 0.1414124, 0.4214214, 0.213123, 0.3214124, 0.1414124, 0.3214521251, 0.213123, 0.3214124, 0.1414124, 0.3214521251]
let vector2 = [0.213123, 0.3214124, 0.1414124, 0.3214521251, 0.213123, 0.3214124, 0.1414124, 0.3214521251, 0.213123, 0.511515, 0.1414124, 0.3214521251, 0.213123, 0.3214124, 0.1414124, 0.3214521251, 0.213123, 0.3214124, 0.1414124, 0.3213213]
let similarity = Vector.cosineSimilarity(a: vector1, b: vector2)
print(similarity) //0.9510201910206734In data analysis, cosine similarity is a measure of similarity between two sequences of numbers.
Read more about Cosine Similarity here.
MIT License
Copyright (c) 2022 MacPaw Inc.
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.