← Blogby Marcell Almeida

How to compare LLM API costs across providers

Enter input and output tokens — see side-by-side pricing for GPT, Claude, and Gemini models.

Choosing an LLM means balancing quality and unit economics. The AI Model Cost Comparison shows per-request and monthly cost estimates for the same workload across major providers.

Try it — token counts and model selection

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How it works

  1. Input tokens — prompt size per request.
  2. Output tokens — expected completion length.
  3. Compare models — OpenAI, Anthropic, and Google side by side.

Apples to apples

Same token counts applied to each model's published per-million rates. Actual bills vary with caching, batching, and tier discounts.

Single-model detail

For one provider deep-dive, use the AI Cost Calculator.

The How to compare LLM API costs across providers is free, runs locally, and never sends your data to a server. More developer tools at maratool.com.