PyPI · pypi:gymnasium

gymnasium active

A standard API for reinforcement learning and a diverse set of reference environments (formerly Gym).

The latest stable version of gymnasium is 1.4.0, published on 2026-10-05. Verified by Vigia on 2026-11-13.

Latest stable version	1.4.0
Published	2026-10-05 11:02:14 UTC
Install	`pip install --upgrade gymnasium`
Requires	`python >=3.10`
License	MIT License
Advisories on latest version	none known
Last verified	2026-11-13 11:22:41 UTC
Sources	pypi.org

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Maintenance

Activity	active
Last stable release	2026-10-05 11:02:14 UTC · 39 days ago
Stable releases in the last 12 months	3
Published versions	21

Heuristic based only on release dates; it does not measure issue or security response times.

Version history

Version	Published
`1.4.0`	2026-10-05 11:02:14 UTC
`1.3.0`	2026-04-22 13:47:12 UTC
`1.2.3`	2025-12-18 16:51:08 UTC
`1.2.2`	2025-11-04 15:21:03 UTC
`1.2.1`	2025-09-23 08:22:38 UTC
`1.2.0`	2025-06-27 08:21:18 UTC
`1.1.1`	2025-03-06 16:30:34 UTC
`1.1.0`	2025-02-26 11:53:08 UTC
`1.0.0`	2024-10-08 10:01:00 UTC
`0.29.1`	2023-08-21 13:07:29 UTC
`0.29.0`	2023-07-14 22:49:02 UTC
`0.28.1`	2023-03-25 12:01:58 UTC
`0.28.0`	2023-03-24 17:27:42 UTC
`0.27.1`	2023-01-20 14:49:47 UTC
`0.27.0`	2022-12-12 13:29:44 UTC
`0.26.3`	2022-10-24 16:22:59 UTC
`0.26.2`	2022-10-05 17:14:07 UTC
`0.26.1`	2022-09-16 22:49:09 UTC
`0.0.1` withdrawn	2021-11-05 01:51:08 UTC

Showing the 19 most recent of 19 versions. JSON

Version compatibility

Newest stable version that declares support for each runtime version (from the requirements published with each version).

Runtime	Newest compatible version
`python 3.8`	`1.1.1`
`python 3.9`	`1.1.1`
`python 3.10`	`1.4.0`
`python 3.11`	`1.4.0`
`python 3.12`	`1.4.0`
`python 3.13`	`1.4.0`

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Frequently asked questions

What is the latest version of gymnasium?

The latest stable version of gymnasium is 1.4.0, published on 2026-10-05. Verified by Vigia on 2026-11-13.

How do I install the latest version of gymnasium?

Run pip install --upgrade gymnasium. The latest stable version is 1.4.0 (verified 2026-11-13).

Is gymnasium deprecated?

No. gymnasium is not marked as deprecated in the registry.

Which Python version does gymnasium require?

gymnasium 1.4.0 declares this requirement: python >=3.10.

Does gymnasium 1.4.0 have known vulnerabilities?

No known advisories affect gymnasium 1.4.0 according to the data Vigia checks.

Is gymnasium still maintained?

gymnasium published 3 stable releases in the last 12 months; the most recent was 39 days ago. Activity: active.

Observed changes

Mon Oct 05 2026 11:03:26 GM +0000 (Coordinated Universal Time) — released 1.3.0 → 1.4.0

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