Cheapest GPT-4o API: Tokemart is 93% below the official price
GPT-4o costs $2.50/$10 per 1M tokens from OpenAI. The cheapest quote is Tokemart: $0.169 in, $0.677 out. Full table and buying checklist below.
| # | Provider | 1M input | 1M output | Discount | Tokens per $100 |
|---|---|---|---|---|---|
| — | Official list | $2.50 | $10.00 | 0% | 26.7M |
| 1 | Tokemartdemo | $0.169 | $0.677 | −93% | 394M |
| 2 | SwiftRoutedemo | $0.213 | $0.851 | −91% | 313M |
| 3 | PromptPortdemo | $0.315 | $1.26 | −87% | 212M |
| 4 | ModelMilldemo | $0.410 | $1.64 | −84% | 162M |
| 5 | APIBridgedemo | $0.725 | $2.90 | −71% | 91.9M |
| 6 | FluxAPIdemo | $1.06 | $4.24 | −58% | 62.9M |
| 7 | RelayOnedemo | $1.53 | $6.10 | −39% | 43.7M |
| 8 | ByteGatedemo | $1.84 | $7.36 | −26% | 36.2M |
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.