Cheapest Grok 4 API: RunAPI is 96% below the official price
Grok 4 costs $3.00/$15 per 1M tokens from xAI. The cheapest quote is RunAPI: $0.135 in, $0.675 out. Full table and buying checklist below.
| # | Provider | 1M input | 1M output | Discount | Tokens per $100 |
|---|---|---|---|---|---|
| — | Official list | $3.00 | $15.00 | 0% | 20.0M |
| 1 | $0.135 | $0.675 | −96% | 444M |
Tokens per $100 assume a “code” mix: 5 input tokens per output token. Prices are crawled; verify them on the provider page before buying.
What to check before buying
- Test the key with the free API checker — it verifies the endpoint responds, without sending tokens.
- Compare the blended cost for your workload, not just the input price: output tokens dominate in agent workloads.
- Check uptime and minimum top-up: the cheapest provider is useless if it is down half the day.