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AI Prompt Cost Calculator

Estimate daily and monthly API costs for any LLM. Select a model, enter your average token counts and request volume, and get instant cost projections.

✓ 10+ models supported ✓ Daily & monthly projections ✓ Runs in your browser

System prompt + user message

Model response length

Cost per Request

$0.00

Daily Cost

$0.00

Monthly Cost (30d)

$0.00

Cost Breakdown

Input tokens (per request) 500
Input cost (per request) —
Output tokens (per request) 200
Output cost (per request) —
Total tokens / 1000 requests —

Compare All Models (same usage)

Model Per Request Daily Monthly

* Llama prices are indicative of cloud inference APIs (Together AI, Groq). Prices as of Q1 2025.

Frequently Asked Questions

How are input and output tokens different?▼

Input tokens are the text you send to the model (prompt + context). Output tokens are the text the model generates in response. Output tokens are typically 2-4x more expensive than input tokens.

What is the difference between daily and monthly cost?▼

Daily cost is requests/day × cost per request. Monthly cost multiplies by 30. This assumes consistent daily usage — factor in weekends or peak/off-peak patterns for a more accurate forecast.

Which model is the cheapest for my use case?▼

For most text tasks, Claude Haiku and Gemini Flash are cheapest. For code/reasoning, GPT-4o Mini and Claude Haiku offer the best cost-to-quality ratio. Frontier models (GPT-4o, Claude Opus) cost significantly more but excel at complex tasks.

How do I reduce my LLM API costs?▼

1) Shorten system prompts. 2) Use prompt caching (Anthropic/OpenAI both support it). 3) Route simple requests to cheaper models. 4) Limit max_tokens in your API calls. 5) Batch requests where latency allows.

Are these the real prices?▼

Prices are approximate as of Q1 2025. LLM providers change pricing frequently — always verify on the provider's official pricing page before budgeting.

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