| CPM | PERT |
|---|---|
| CPM stands for Critical Path Method. | PERT stands for Programme or Project Evaluation and Review Technique. |
| It is a deterministic model. | It is a probabilistic model. |
| It deals with the activities of precise well-known time. | It deals with the activities of uncertain time. |
| It is activity oriented. | It is event oriented. |
| It is used for projects which are repetitive in nature. | It is used for projects which are non-repetitive in nature. |
| It is based on single time estimates. | It is based on three time estimates i.e., optimistic time, pessimistic time, and most likely time. |
| CPM can control both time and cost when planning. | It is a tool for planning and control of time. |
| It is used for construction projects. | It is used in research and development projects. |
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