Text embedding models are neural networks that transform texts into numerical vectors. They are a crucial building block for semantic search/retrieval systems and retrieval-augmented generation (RAG) and are responsible for the retrieval quality. voyage-3-large is a state-of-the-art general-purpose and multilingual embedding model that ranks first across eight evaluated domains spanning 100 datasets, including law, finance, and code. It outperforms OpenAI-v3-large and Cohere-v3-English by an average of 9.74% and 20.71%, respectively. Enabled by Matryoshka learning and quantization-aware training, voyage-3-large supports smaller dimensions and int8 and binary quantization that dramatically reduce vectorDB costs with minimal impact on retrieval quality. Latency is 90 ms for a single query with at most 100 tokens, and throughput is 12.6M tokens per hour at $0.22 per 1M tokens on an ml.g6.xlarge. Learn more about voyage-3-large here: https://blog.voyageai.com/2025/01/07/voyage-3-large/
Highlights
Outperforms OpenAI-v3-large and Cohere-v3-English by an average of 9.74% and 20.71%, respectively, across 100 datasets, spanning eight diverse domains, including law, finance, and code.
Supports embeddings of 2048, 1024, 512, and 256 dimensions and offers multiple embedding quantization, including float (32-bit floating point), int8 (8-bit signed integer), uint8 (8-bit unsigned integer), binary (bit-packed int8), and ubinary (bit-packed uint8).
32K token context length. Latency is 90 ms for a single query with at most 100 tokens, and throughput is 12.6M tokens per hour at $0.22 per 1M tokens on an ml.g6.xlarge.
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You pay by the hour for the compute instance that runs this embedding model. Charges scale with the instance you select and the inference mode you choose. Real-time mode is available across four ml.g5 sizes (xlarge, 2xlarge, 4xlarge, 8xlarge) and four ml.g6 sizes (xlarge, 2xlarge, 4xlarge, 8xlarge). Larger instance sizes carry more compute and cost more per host hour. Batch mode is offered on the ml.g5.2xlarge instance only. Billing is usage-based, tied to host hours, so you pay for the time each instance runs.
Top-of-mind questions for buyers
What does one host hour cover, and what work does this model perform?
One host hour is one hour that a single inference instance runs. This model turns text into vector embeddings, numeric arrays that capture meaning. You pay for each hour the instance stays active, whether serving real-time queries or processing batch jobs. Counting is based on running time, not requests.
How do real-time mode and batch mode differ for billing?
Both meter by host hour on the instance you run. Real-time mode keeps an instance active to answer queries as they arrive, so you pay for uptime. Batch mode processes grouped inputs and is offered only on the ml.g5.2xlarge instance. Real-time suits live query workloads; batch suits scheduled bulk jobs.
Am I charged when an instance sits idle in real-time mode?
Charges accrue for every hour an instance runs, even when it handles no queries. Real-time mode keeps the instance active and billable until you stop it. To avoid charges on idle capacity, stop instances you are not using. Stopped instances may still incur underlying AWS storage fees.
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Deploy the model on Amazon SageMaker AI using the following options:
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Deploy the model to process batches of data stored in Amazon Simple Storage Service (Amazon S3). SageMaker runs the job, processes your data, and returns results to Amazon S3. When complete, SageMaker stops the model. You're billed for software and SageMaker infrastructure costs only during the batch job. Duration depends on your model, instance type, and dataset size. AWS Marketplace models don't support Amazon SageMaker Asynchronous Inference. For more information, see Batch transform for inference with Amazon SageMaker AI .
Version release notes
We are excited to announce the initial release of voyage-3-large.
Additional details
Inputs
Outputs
Usage instructions
Sample notebooks
Inputs
Summary
input: str or List[str] - Text(s)
input_type: str, optional (default=null) - "query" or "document".
The following table describes supported input data fields for real-time inference and batch transform.
1
Field name
Description
Constraints
Required
input
A single text string, or a list of texts as a list of strings.
Type: FreeText Limitations: The maximum tokens for each text is 32K, the maximum length of the list is 128, and the total number of tokens in the list is at most 32K.
Yes
input_type
Type of the input text. Default to null. Other options: "query", "document".
Default value: null Type: FreeText
No
truncation
Whether to truncate the input texts to fit within the context length. - If True, over-length input texts will be truncated to fit within the context length. - If False, an error will be raised if any given text exceeds the context length.
The number of dimensions for resulting output embeddings. Options: 2048, 1024, 512, 256, `null`. If `null`, then output dimension is 1024.
Default value: null Type: Integer
No
output_dtype
The data type for the resulting output embeddings. * "float": 32-bit single-precision floating-point numbers. This is provides the highest precision / retrieval accuracy. * "int8" and "uint8": 8-bit integers ranging from -128 to 127 and 0 to 255, respectively. * "binary" and "ubinary": 8-bit integers that represent bit-packed, quantized single-bit embedding values: int8 for binary and uint8 for ubinary. The length of the returned list of integers is 1/8 of output_dimension.
Format in which the embeddings are encoded. * None (default): embeddings are represented as a list of numbers in the data type specified by the output_dtype parameter (default is float); * "base64": embeddings are Base64-encoded NumPy array of (1) numpy.float32 for output_dtype=float, (2) numpy.int8 for output_dtype=int8, binary, and (3) numpy.uint8 for output_dtype=uint8, ubinary
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A state-of-the-art legal embedding model optimized for semantic search, RAG, and document classification, ranked first on the Massive Legal Embedding Benchmark.
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