Cheapest Claude Opus 4.1 API: Tokemart is 94% below the official price
Claude Opus 4.1 costs $15/$75 per 1M tokens from Anthropic. The cheapest quote is Tokemart: $0.947 in, $4.73 out. Full table and buying checklist below.
| # | Provider | 1M input | 1M output | Discount | Tokens per $100 |
|---|---|---|---|---|---|
| — | Official list | $15.00 | $75.00 | 0% | 4.00M |
| 1 | Tokemartdemo | $0.947 | $4.73 | −94% | 63.4M |
| 2 | SwiftRoutedemo | $1.16 | $5.78 | −92% | 51.9M |
| 3 | ClaudePooldemo | $1.46 | $7.29 | −90% | 41.2M |
| 4 | PromptPortdemo | $1.71 | $8.57 | −89% | 35.0M |
| 5 | ModelMilldemo | $2.10 | $10.50 | −86% | 28.6M |
| 6 | NovaRelaydemo | $3.62 | $18.09 | −76% | 16.6M |
| 7 | FluxAPIdemo | $7.21 | $36.07 | −52% | 8.32M |
| 8 | RelayOnedemo | $8.13 | $40.64 | −46% | 7.38M |
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.