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Daft

High-performance data engine for multimodal AI workloads

open sourceupdated Jul 7, 2026

Daft is a high-performance distributed data engine designed specifically for AI and multimodal workloads. It processes structured data alongside images, audio, video, and embeddings natively, outperforming Spark and Polars on AI-specific data pipelines. Built in Rust with a Python API, Daft handles the data engineering challenges unique to machine learning workflows.

Daft addresses a gap in the data processing landscape by treating multimodal data as a first-class citizen. While traditional engines like Spark and Polars optimize for tabular data, Daft natively handles columns containing images, audio files, video clips, and embedding vectors alongside standard structured data. This eliminates the complex preprocessing pipelines that AI teams typically build to convert between data formats before training or inference workflows.

The Rust-based execution engine delivers performance competitive with or exceeding Polars on standard benchmarks while adding multimodal capabilities that Polars lacks entirely. Daft supports lazy evaluation, query optimization, and distributed execution across multiple machines. The Python DataFrame API feels familiar to Pandas and Polars users, minimizing the learning curve for data scientists and ML engineers who need to process diverse data types.

Backed by Eventual Inc. with over 7,000 GitHub stars under the Apache 2.0 license, Daft is gaining adoption among AI teams processing large-scale training datasets that include mixed modalities. It integrates with popular ML frameworks and cloud storage systems, providing the data pipeline layer between raw multimodal data sources and model training or inference systems.

Pricing

Free and open-source (Apache 2.0); managed cloud coming

Platforms

Python API, Rust engine, distributed execution, cloud storage

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Comparisons

Polars vs Daft — Single-Node DataFrame Speed or Distributed Multimodal AI Processing

Polars and Daft both modernize Python data processing, but they optimize for different workloads. Polars is the faster, simpler default for DataFrame analytics, local pipelines, and many production transformations. Daft is more compelling when the data pipeline must process images, video, embeddings, and distributed multimodal datasets. Choose Polars for general high-performance DataFrames; choose Daft when AI data engineering needs distributed multimodal primitives.

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FAQ

What is Daft?

Daft is a high-performance distributed data engine designed specifically for AI and multimodal workloads. It processes structured data alongside images, audio, video, and embeddings natively, outperforming Spark and Polars on AI-specific data pipelines. Built in Rust with a Python API, Daft handles the data engineering challenges unique to machine learning workflows.

Is Daft free?

Yes — Daft is open source and free to use. Free and open-source (Apache 2.0); managed cloud coming

Is Daft open source?

Yes — Daft is open source.

What are the best Daft alternatives?

The top editor-verified Daft alternatives are LlamaIndex, Weights & Biases.