Cheapest GPT-5.6 Terra API: Tokemart is 93% below the official price
GPT-5.6 Terra costs $2.00/$12 per 1M tokens from OpenAI. The cheapest quote is Tokemart: $0.130 in, $0.781 out. Full table and buying checklist below.
| # | Provider | 1M input | 1M output | Discount | Tokens per $100 |
|---|---|---|---|---|---|
| — | Official list | $2.00 | $12.00 | 0% | 27.3M |
| 1 | Tokemartdemo | $0.130 | $0.781 | −93% | 419M |
| 2 | SwiftRoutedemo | $0.186 | $1.12 | −91% | 293M |
| 3 | PromptPortdemo | $0.255 | $1.53 | −87% | 214M |
| 4 | ModelMilldemo | $0.278 | $1.67 | −86% | 196M |
| 5 | APIBridgedemo | $0.651 | $3.91 | −67% | 83.8M |
| 6 | FluxAPIdemo | $1.03 | $6.20 | −48% | 52.8M |
| 7 | RelayOnedemo | $1.06 | $6.38 | −47% | 51.3M |
| 8 | ByteGatedemo | $1.43 | $8.60 | −28% | 38.0M |
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.