Know what your LLM stack really costs.
LLMCosts builds free, neutral cost tools for teams running LLMs in production. No vendor affiliation, one open formula, prices re-verified against official pricing pages (last check: 2026-07-14).
Tools
LLM API Migration Savings Calculator
How much would you save switching from OpenAI to DeepSeek, Claude or Gemini? Enter your
request volume, token mix, cache hit rate and agent chain depth — get a ranked savings table
with effective prices after cache and batch discounts.
AI Agent Cost Calculator
What does a production agent really cost per successful task? Chain depth, retries,
first-attempt success rate and human-escalation minutes turn token prices into honest unit
economics — compared across every model we track.
LLM Cost by Use Case
Which model for the job, priced in your units: document extraction ($ per 1,000 pages),
summarization ($ per 1,000 articles) and RAG generation (monthly at your query volume) —
ranked tables plus which quality tier each use case actually needs.
LLM Cost per Customer Calculator
AI SaaS unit economics: what your feature costs per average customer vs per power user,
LLM cost as a share of your subscription price, and the request volume where a $29 plan
goes underwater.
Methodology, formula and known simplifications: how we compute costs.