# Embeddings > For the complete documentation index, see [llms.txt](/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL. ## Create embeddings **post** `/embeddings` Creates an embedding vector representing the input text. ### Body Parameters - `input: string or array of string or array of number or array of array of number` Input text to embed, encoded as a string or array of tokens. To embed multiple inputs in a single request, pass an array of strings or array of token arrays. The input must not exceed the max input tokens for the model (8192 tokens for all embedding models), cannot be an empty string, and any array must be 2048 dimensions or less. [Example Python code](https://cookbook.openai.com/examples/how_to_count_tokens_with_tiktoken) for counting tokens. In addition to the per-input token limit, all embedding models enforce a maximum of 300,000 tokens summed across all inputs in a single request. - `String = string` The string that will be turned into an embedding. - `Array = array of string` The array of strings that will be turned into an embedding. - `Array = array of number` The array of integers that will be turned into an embedding. - `Array = array of array of number` The array of arrays containing integers that will be turned into an embedding. - `model: string or EmbeddingModel` ID of the model to use. You can use the [List models](/api/reference/resources/models/methods/list) API to see all of your available models, or see our [Model overview](/api/docs/models) for descriptions of them. - `string` - `EmbeddingModel = "text-embedding-ada-002" or "text-embedding-3-small" or "text-embedding-3-large"` - `"text-embedding-ada-002"` - `"text-embedding-3-small"` - `"text-embedding-3-large"` - `dimensions: optional number` The number of dimensions the resulting output embeddings should have. Only supported in `text-embedding-3` and later models. - `encoding_format: optional "float" or "base64"` The format to return the embeddings in. Can be either `float` or [`base64`](https://pypi.org/project/pybase64/). - `"float"` - `"base64"` - `user: optional string` A unique identifier representing your end-user, which can help OpenAI to monitor and detect abuse. [Learn more](/api/docs/guides/safety-best-practices#implement-safety-identifiers). ### Returns - `CreateEmbeddingResponse object { data, model, object, usage }` - `data: array of Embedding` The list of embeddings generated by the model. - `embedding: array of number or string` The embedding vector, returned as a list of floats when `encoding_format` is `float` (the default), or as a base64-encoded string when `encoding_format` is `base64`. The length of the vector depends on the model as listed in the [embedding guide](/api/docs/guides/embeddings). - `array of number` - `string` - `index: number` The index of the embedding in the list of embeddings. - `object: "embedding"` The object type, which is always "embedding". - `"embedding"` - `model: string` The name of the model used to generate the embedding. - `object: "list"` The object type, which is always "list". - `"list"` - `usage: object { prompt_tokens, total_tokens }` The usage information for the request. - `prompt_tokens: number` The number of tokens used by the prompt. - `total_tokens: number` The total number of tokens used by the request. ### Example ```http curl https://api.openai.com/v1/embeddings \ -H 'Content-Type: application/json' \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "input": "The quick brown fox jumped over the lazy dog", "model": "text-embedding-3-small", "encoding_format": "float", "user": "user-1234" }' ``` #### Response ```json { "data": [ { "embedding": [ 0 ], "index": 0, "object": "embedding" } ], "model": "model", "object": "list", "usage": { "prompt_tokens": 0, "total_tokens": 0 } } ``` ### Example ```http curl https://api.openai.com/v1/embeddings \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "input": "Hello world", "model": "text-embedding-3-small", "encoding_format": "float", "dimensions": 3 }' ``` #### Response ```json { "object": "list", "data": [ { "object": "embedding", "embedding": [ 0.26726124, 0.53452248, 0.80178373 ], "index": 0 } ], "model": "text-embedding-3-small", "usage": { "prompt_tokens": 2, "total_tokens": 2 } } ``` ## Domain Types ### Create Embedding Response - `CreateEmbeddingResponse object { data, model, object, usage }` - `data: array of Embedding` The list of embeddings generated by the model. - `embedding: array of number or string` The embedding vector, returned as a list of floats when `encoding_format` is `float` (the default), or as a base64-encoded string when `encoding_format` is `base64`. The length of the vector depends on the model as listed in the [embedding guide](/api/docs/guides/embeddings). - `array of number` - `string` - `index: number` The index of the embedding in the list of embeddings. - `object: "embedding"` The object type, which is always "embedding". - `"embedding"` - `model: string` The name of the model used to generate the embedding. - `object: "list"` The object type, which is always "list". - `"list"` - `usage: object { prompt_tokens, total_tokens }` The usage information for the request. - `prompt_tokens: number` The number of tokens used by the prompt. - `total_tokens: number` The total number of tokens used by the request. ### Embedding - `Embedding object { embedding, index, object }` Represents an embedding vector returned by embedding endpoint. - `embedding: array of number or string` The embedding vector, returned as a list of floats when `encoding_format` is `float` (the default), or as a base64-encoded string when `encoding_format` is `base64`. The length of the vector depends on the model as listed in the [embedding guide](/api/docs/guides/embeddings). - `array of number` - `string` - `index: number` The index of the embedding in the list of embeddings. - `object: "embedding"` The object type, which is always "embedding". - `"embedding"` ### Embedding Model - `EmbeddingModel = "text-embedding-ada-002" or "text-embedding-3-small" or "text-embedding-3-large"` - `"text-embedding-ada-002"` - `"text-embedding-3-small"` - `"text-embedding-3-large"`