# OR-Tools CP-SAT

6 Hacker News commenters recommended OR-Tools CP-SAT and 1 criticized it, November 2025 to November 2026. It was recommended in 3 of 13 months.

**Verdict:** People recommend it for solving hard scheduling and constraint problems quickly, and several say it handles difficult cases well.

## Why people recommend it

- Solves hard problems quickly (2 comments): "Most cases I've tried can be solved reasonably quickly when using OR-Tools CP-SAT" ([source](https://news.ycombinator.com/item?id=45886027)) "CP-SAT handles it pretty well." ([source](https://news.ycombinator.com/item?id=48122333))
- Enthusiastic fans among users (2 comments): "Found minizinc/CP-SAT recently and I’m obsessed" ([source](https://news.ycombinator.com/item?id=49570554)) "I'm a big fan of the CP-SAT solver." ([source](https://news.ycombinator.com/item?id=48123506))

## Alternatives hackers recommend

- [Z3 SMT solver](https://hackerapproved.com/p/z3.md): 24 recommend
- [MiniZinc](https://hackerapproved.com/p/minizinc.md): 6 recommend
- [Google OR-Tools](https://hackerapproved.com/p/google-or-tools.md): 6 recommend
- [Gurobi](https://hackerapproved.com/p/gurobi.md): 6 recommend
- [JuMP](https://hackerapproved.com/p/jump.md): 5 recommend

## Cite as

Hacker Approved, "OR-Tools CP-SAT", https://hackerapproved.com/p/or-tools-cp-sat/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).