How much does an AI agent cost per task?
Estimate the cost of multi-step AI agents that call tools, from live model prices.
Estimated monthly cost — Agent run (one step)
Calculated live from current TokenRex prices.
| Model | Input / 1M | Output / 1M | Per month |
|---|---|---|---|
| GPT-6 Sol | $2.00 | $10.00 | $540.00 |
| GPT-6 Astra | $10.00 | $50.00 | $2.7k |
| Claude Opus 5.5 | $4.00 | $20.00 | $1.1k |
| Claude Sonnet 5 | $2.00 | $10.00 | $540.00 |
| Gemini 4 Argon | $2.00 | $10.00 | $540.00 |
The workload we priced
15,000 requests a month, each with about 12,000 input tokens and 1,200 output tokens. One token is roughly three quarters of an English word.
What drives the bill
Every tool call is another request that resends the growing context.
Limit the number of steps and trim old tool results.
Questions
- Are these exact monthly bills?
- They are estimates from live TokenRex prices and the token counts shown. Real bills depend on your actual prompt and reply lengths, which every API response reports in its usage field.
- How do I lower the cost?
- Shorten system prompts, cap reply length, cache repeated input where the model supports it, and send simple requests to a smaller model.
- Which currency am I billed in?
- Wallet top-ups and billing are in Indian rupees. Prices display in US dollars by default, and signed-in users can choose another display currency.
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