# Fair-use limits

"Unlimited" on Kilowatt means **no token meter**: no per-token billing and no usage charges. To keep the service fair for everyone, each subscription has limits on speed and daily volume.

| Limit | Pro | Lite |
| --- | --- | --- |
| Output tokens per minute | 6,000 | 2,000 |
| Uncached input tokens per minute | 120,000 | 40,000 |
| Concurrent requests | 2 | 1 |
| Daily output tokens | 2,000,000 | 300,000 |
| Daily uncached input tokens | 10,000,000 | 1,500,000 |
| Cached input | Exempt | Exempt |
| Priority | standard | lower |

## How the limits work

- **Cached input is exempt.** Coding agents re-send the same context on every turn; tokens served from the prompt cache never count toward any limit.
- **Per-minute limits** are rolling token buckets on uncached input and output tokens.
- **Concurrent requests** is how many requests one subscription can have in flight.
- **Daily budgets** reset every 24 hours.
- **Lite** requests are served at lower priority than Pro when the system is busy.

## When you hit a limit

You get HTTP `429` with a `Retry-After` header (seconds). OpenAI and Anthropic SDKs retry automatically (set `max_retries`, e.g. 5). Requests can also return 429 when the whole service is at capacity. There is no uptime SLA.

## Changes

Limits may be adjusted as capacity grows; subscribers will be told about changes.

## Compared with Morph Ultra

Morph Ultra's published per-minute limits are higher: DeepSeek V4.1 Flash 2,103,237 uncached input / 76,559 output tokens per minute; Kimi K3.1 72,870 / 6,162 ([source](https://www.morphllm.com/products/ultra), read 2026-11-10). Morph Ultra costs $200/month; Kilowatt Pro is $39.

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Source: https://kilowatt.sh/docs/fair-use · Markdown: https://kilowatt.sh/docs/fair-use.md · All docs: https://kilowatt.sh/llms-full.txt