Zuban
Ranked 6 of 6 Python type checkers by recommenders
Python type checker people recommend for strong type system conformance and Django model support, often compared with Pyrefly. It is free and AGPL licensed.
Python type checker people recommend for strong type system conformance and Django model support, often compared with Pyrefly. It is free and AGPL licensed.
11 people gave an opinion
- recommend it
- 8
- criticize it
- 3
- approval share
- 73%
Recommended in 4 of 13 months
- November 2025: not recommended
- December 2025: recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 8 people recommend itNeeds 10 or more, not met.
- 2.7 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 4 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Strong typing and conformance
“If you want speed and strict conformance, Pyrefly and Zuban are better.”
Comment from 24 Oct 2026 in “Bringing uv and ty together” “it already supports Django models and is way ahead in typing support”
Comment from 18 Dec 2025 in “Announcing the Beta release of ty” “Pyrefly and Zuban score higher on the type system conformance test.”
Comment from 25 Oct 2026 in “Bringing uv and ty together” - Comment from 18 Dec 2025 in “Announcing the Beta release of ty”
Compared favorably with Pyrefly
“If you want speed and strict conformance, Pyrefly and Zuban are better.”
Comment from 24 Oct 2026 in “Bringing uv and ty together” “Pyrefly and Zuban score higher on the type system conformance test.”
Comment from 25 Oct 2026 in “Bringing uv and ty together” “I preferred it for similar reasons to why you like Pyrefly”
Comment from 24 Oct 2026 in “Bringing uv and ty together”
Other Python type checkers people recommend
The four most recommended other Python type checkers, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| ty Python type checker | 74 | 26 | 74% | 11 | — | Approved |
| mypy | 34 | 14 | 71% | 10 | — | Approved |
| Pyright | 31 | 16 | 66% | 11 | — | — |
| Pyrefly | 28 | 8 | 78% | 8 | 1 mo3 owners | Approved |
| ZubanThis page | 8 | 3 | 73% | 4 | — | — |
What people said
11 of the 13 comments that mention it, newest first. Each links to the original comment.
“it's also AGPL, which is a legal gray area and a headache in many places”
“Pyrefly and Zuban score higher on the type system conformance test.”
“Zuban is a one-man show though, with a bus factor of probably 1.”
“I preferred it for similar reasons to why you like Pyrefly”
“For all I know zuban or ty could be the better choice.”
“If you want speed and strict conformance, Pyrefly and Zuban are better.”
“I have switched type checker recently in my own Python projects from zuban to ty”
“Zuban has one FP and one FN, pyright is 100% correct.”
“Zuban continues to have "not great" diagnostics like the rest of the python type checkers”
“it's nearly finished, supports the full Python type system”
“it already supports Django models and is way ahead in typing support”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.