LLM API Cost Calculator — GPT-4, Claude, Gemini
Calculate LLM API monthly cost. Enter your input/output tokens, requests per day, and pick a model — get instant cost projection across OpenAI, Anthropic, and Google models.
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Price Table (May 2026)
Price = USD / 1M tokens. Input is typically 3-5× cheaper than output — optimize input first (trim system prompts, prune context).
Cost-Saving Tricks
- 🎯 Model routing: GPT-4o-mini judges difficulty, only hard cases go to GPT-4o
- 📦 Prompt caching (both Anthropic & OpenAI): same system prompt → save 50%+
- ⚡ Cut unused system prompt verbosity (use dibi8 Token Counter to verify)
- 🪄 RAG chunk optimization: embeddings are 100× cheaper than LLM calls