# LLM API cost calculator

Pick a preset, adjust your traffic, and every model's monthly cost updates instantly using its real cache, batch and long-context rates. Tick models to compare them, or share the link to reproduce the result. 

Estimates from published per-token rates; check official pricing before budgeting. Data synced from the LiteLLM price list 2026-10-08. 

Selling a subscription? Check your [margin after AI API cost](https://apicostcheck.com/unit-economics/). Running a support bot? See the [chatbot API cost](https://apicostcheck.com/ai-chatbot-api-cost/) at three traffic levels. Already have usage data? [Analyze your OpenAI or Anthropic export](https://apicostcheck.com/usage-analyzer/). 

## How the estimate works

Per request: uncached input × input price + cache reads × cache-read price + cache writes × cache-write price (normal input price for providers that cache automatically) + output × output price. Prompts above a model's long-context threshold switch the whole request to its long-context rates. Batch requests use published batch rates. Results are estimates: cache lifetime (TTL), reasoning tokens and tool calls change real bills.

## FAQ

### Does cached input cost less?

Yes. Providers bill input tokens read from the prompt cache at a fraction of the normal input price, often 10%. Some providers, such as Anthropic, also charge separately to write the cache. When a model has a published cache-write rate, this calculator includes it in the estimate.

### What does the batch toggle do?

Batch share is the percentage of requests you send through a Batch API (asynchronous, usually within 24 hours). Those requests use each model's published batch input, output and cache rates. Models without a batch price keep the normal price and are marked "no batch".

### Why is my real bill different?

Reasoning models bill hidden thinking tokens as output, long prompts can trigger higher long-context rates, and tool calls add tokens. Treat results as an estimate.

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Source: https://apicostcheck.com/calculator/ · prices in USD per 1M tokens, synced 2026-10-08 · Free to reuse with a link to https://apicostcheck.com (CC BY 4.0). Prices derived from LiteLLM's model price list, MIT License, (c) 2023 Berri AI.