compare
Ibis vs Polars
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Ibis | Polars |
|---|---|---|
| Language | Python | Rust |
| Licence | Apache-2.0 | MIT |
| Stars | 6.7k | 40k |
| Latest | 12.0.0 | py-2.0.0 |
| Last push | 2026-10-05 | 2026-10-06 |
| Release cadence | about 60 days between releases | about 21 days between releases |
| Active contributors | 10 commit authors on the default branch in the last 90 days | 56+ commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace pandas. Alternatives to pandas →
PartialIbisA dataframe API that compiles to SQL and runs on DuckDB, Polars, PostgreSQL, BigQuery and other backends.
Full replacementPolarsMulti-threaded DataFrames with lazy queries, in Rust with Python bindings, and a different API.
Ibis
- 12.0.02026-02-07pyspark: PySpark <3.5 is no longer supported
- 11.0.02025-10-15clickhouse: adjust array indexing code for later versions of clickhouse
- 10.8.02025-07-28datatypes: add Schema.from_sqlglot method to produce an Ibis schema from SQLGlot (#11351) (f6641e7)
- 10.7.02025-07-27api: add Expr.to_sql() method (#11357) (493d6e5)
- 10.6.02025-06-16add Deferred to signatures of many Table methods (d73a040)
Polars
- py-2.0.02026-10-06Python Polars 2.0.0
- py-2.0.0-rc.22026-09-20Python Polars 2.0.0-rc.2pre-release
- py-1.44.22026-09-09Python Polars 1.44.2
- py-2.0.0-rc.12026-09-02Python Polars 2.0.0-rc.1pre-release
- py-1.44.12026-08-26Python Polars 1.44.1
Ibis
unsigned The latest release, 12.0.0, carries no signature GitHub could verify.
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Polars
✓ signed The latest release, py-2.0.0, carries a signature GitHub verified.
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