--- title: "delta vs lance" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/delta-io-delta-vs-lance-format-lance" tools: ["delta-io-delta", "lance-format-lance"] --- # delta vs lance *GraphCanon updated Aug 3, 2026* ## Verdict Pick delta if delta is an open-source storage framework providing ACID transactions for data lakehouse architectures designed to work seamlessly with various compute engines including Apache Spark, PrestoDB, Flink, Trino, and Hive; pick lance if lance is an open lakehouse format built for multimodal AI, offering fast random access and vector index creation with extensive language compatibility. [delta](https://delta.io) reports 8.9k GitHub stars, 2.1k forks, and 1.6k open issues, last pushed Aug 2, 2026. [lance](https://lance.org) has 6.9k stars, 789 forks, and 1.0k open issues, last pushed Aug 3, 2026. Figures are from public GitHub metadata via [delta's repository](https://github.com/delta-io/delta) and [lance's repository](https://github.com/lance-format/lance). | | [delta](/tools/delta-io-delta.md) | [lance](/tools/lance-format-lance.md) | | --- | --- | --- | | Tagline | An open-source storage framework for building Lakehouse architecture with various compute engines and APIs | Open Lakehouse Format for Multimodal AI | | Stars | 8,928 | 6,900 | | Forks | 2,146 | 789 | | Open issues | 1,553 | 1,030 | | Language | Scala | Rust | | Adopt for | Delta is an open-source storage framework providing ACID transactions for data lakehouse architectures designed to work seamlessly with various compute engines including Apache Spark, PrestoDB, Flink, Trino, and Hive. | Lance is an open lakehouse format built for multimodal AI, offering fast random access and vector index creation with extensive language compatibility. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Apache-2.0 | | Categories | Data & Retrieval | Data & Retrieval | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [delta](/tools/delta-io-delta.md) | [lance](/tools/lance-format-lance.md) | | --- | --- | --- | | Days since push | 1d | 0d | | Open issues (now) | 1.6k | 1.0k | | Full report | [trust report](/tools/delta-io-delta/trust.md) | [trust report](/tools/lance-format-lance/trust.md) | ## Decision facts: delta - **Adopt for:** Delta is an open-source storage framework providing ACID transactions for data lakehouse architectures designed to work seamlessly with various compute engines including Apache Spark, PrestoDB, Flink, Trino, and Hive. ## Decision facts: lance - **Adopt for:** Lance is an open lakehouse format built for multimodal AI, offering fast random access and vector index creation with extensive language compatibility. ## Choose when ### Choose delta if… - delta is primarily Scala; lance is Rust. - Tags unique to delta: acid, analytics, big-data, delta-lake. - When you need ACID transaction support in a data lakehouse architecture leveraging Scala and multiple compute engines like Spark, Flink, or PrestoDB. ### Choose lance if… - lance is primarily Rust; delta is Scala. - Tags unique to lance: apache-arrow, computer-vision, data-analysis, data-analytics. - Use Lance when you need fast random access to datasets formatted in a way that supports multimodal AI workloads. ## When NOT to use delta - When your data operations environment is restricted to a single compute engine or one not supported by Delta, like Apache Drill which isn't in the listed support scope. - If your project strictly uses open-source licenses incompatible with BSD-style licensing terms, as Delta uses Apache-2.0. - For situations where there's no need for advanced data management capabilities such as ACID transactions and you can manage with simpler storage solutions. ## When NOT to use lance - Do not use Lance if your application strictly depends on a specific format other than those compatible with it, such as HDF5 or non-supported SQL databases. - Avoid using Lance if real-time performance is critical for all operations and you do not require vector indexing capabilities. ## Common questions ### What is the difference between delta and lance? delta: An open-source storage framework for building Lakehouse architecture with various compute engines and APIs. lance: Open Lakehouse Format for Multimodal AI. See the comparison table for live GitHub stats and shared categories. ### When should I choose delta over lance? Choose delta over lance when delta is primarily Scala; lance is Rust; Tags unique to delta: acid, analytics, big-data, delta-lake; When you need ACID transaction support in a data lakehouse architecture leveraging Scala and multiple compute engines like Spark, Flink, or PrestoDB. ### When should I choose lance over delta? Choose lance over delta when lance is primarily Rust; delta is Scala; Tags unique to lance: apache-arrow, computer-vision, data-analysis, data-analytics; Use Lance when you need fast random access to datasets formatted in a way that supports multimodal AI workloads. ### When should I avoid delta? When your data operations environment is restricted to a single compute engine or one not supported by Delta, like Apache Drill which isn't in the listed support scope. If your project strictly uses open-source licenses incompatible with BSD-style licensing terms, as Delta uses Apache-2.0. For situations where there's no need for advanced data management capabilities such as ACID transactions and you can manage with simpler storage solutions. ### When should I avoid lance? Do not use Lance if your application strictly depends on a specific format other than those compatible with it, such as HDF5 or non-supported SQL databases. Avoid using Lance if real-time performance is critical for all operations and you do not require vector indexing capabilities. ### Is delta or lance more popular on GitHub? delta has more GitHub stars (8,928 vs 6,900). Stars measure visibility, not whether either tool fits your constraints. ### Are delta and lance open source? Yes - both are open-source projects on GitHub (delta: Apache-2.0, lance: Apache-2.0). ### Where can I find alternatives to delta or lance? GraphCanon lists graph-backed alternatives at [delta alternatives](/tools/delta-io-delta/alternatives) and [lance alternatives](/tools/lance-format-lance/alternatives) ([delta markdown twin](/tools/delta-io-delta/alternatives.md), [lance markdown twin](/tools/lance-format-lance/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/delta-io-delta-vs-lance-format-lance.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, delta or lance? delta: Very active. lance: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for delta and lance? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [delta trust report](/tools/delta-io-delta/trust); [lance trust report](/tools/lance-format-lance/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=delta-io-delta`](/api/graphcanon/graph?tool=delta-io-delta) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_