> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nelkap.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Limits

> The limits Nelkap applies to workflows, runs, steps, and events.

## On every plan

| What | Limit |
| - | - |
| Workflow name | 256 characters |
| Events a workflow listens for | 100, each up to 256 characters |
| Concurrency of a workflow | 1 to 500 |
| Steps in a run | 100, of every kind |
| Saved steps in a run | 32 MB |
| Step name | 128 characters |
| Step error | 2,048 characters, the rest is cut |
| Run error | 2,048 characters, the rest is cut |
| Sleep | 1 year |
| Wait | 1 year |
| Wait key | 256 characters |
| Event name | 256 characters |
| Tags | 10 per run or event, each up to 128 characters |
| JSON nesting | 64 levels |
| API keys | 10 per project |

## By plan

| What | Starter | Pro | Business |
| - | - | - | - |
| Workflows per project | 100 | 500 | 1,000 |
| Runs going at once in the workspace | 50 | 100 | 500 |
| Requests per second | 50 | 500 | 1,000 |
| Request size | 1 MB | 2 MB | 3 MB |

Every request counts toward requests per second: starting a run, emitting an event, saving a step, and the signal a running run sends each minute.

The request size applies to each payload, each event, and each step's result.

See all plans on the [pricing page](https://nelkap.com/pricing).


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