LLM cost calculator
Type in your daily token volume and compare the estimated monthly bill across OpenAI, Anthropic, and open-source models on TrustedRails. Per-token rates are hard to feel; a monthly bill is not.
Enter the tokens you burn in a day if you know them, or pick the closest workload if you don't.
| Provider and model | Est. monthly cost |
|---|---|
| OpenAI GPT-6 Astra | $6,000 |
| OpenAI GPT-5.6 Terra | $1,350 |
| Anthropic Claude Fable 5.1 | $6,000 |
| Anthropic Claude Sonnet 5 | $1,200 |
| TrustedRails · GLM-5.3-Flash | $60 |
| TrustedRails · DeepSeek V4 Flash | $60 |
| TrustedRails · MiniMax M2 | $75 |
More about plans, credits, and limits: OpenAI API cost and Claude API cost.
Estimated comparison at 75% input / 25% output tokens, list prices as of September 2026. Prices and terms change over time; always check current rates.
How the numbers are computed
- Monthly cost = tokens per month × the blended per-token price at an assumed 75% input / 25% output mix, typical for automation: prompts carry context and documents in, answers are short.
- OpenAI and Anthropic prices are the published API list prices as of September 2026, taken from the official pricing pages: OpenAI, Anthropic. Prices change over time for every provider; always check current rates. Discounts like batch processing and prompt caching are not modeled.
- TrustedRails prices are our current per-token rates, the same for input and output, locked in when you top up. Current rates are in the pricing table on the main page.
For the full story behind these numbers, see the cost breakdowns: OpenAI API cost and Claude API cost.
Token calculator FAQ
How many tokens is a word?
In English text a token is roughly three quarters of a word, so 1M tokens is about 750,000 words, on the order of ten novels. Code, JSON, and non-English text tokenize less efficiently, so real workloads usually burn more tokens than a word count suggests.
How do I estimate my monthly token volume?
Work from examples. Summarizing one hour of a recorded call is roughly 15,000 tokens. A support bot on 50 tickets a day runs about 100,000 tokens a day. A coding agent beside one developer can burn millions in a working day. A pipeline classifying 10,000 documents a day at about 1,000 tokens each is 10M a day, 300M a month. Pick the closest example and scale it to your numbers.
What about the $200 subscriptions?
At modest interactive volumes a $200 consumer plan is a flat monthly price within its limits, and that can beat any per-token rate. The calculator only computes what can be computed honestly, and vendors do not publish token limits for their plans. For products, SaaS backends, and volumes beyond plan limits, per-token prices are what counts; the cost breakdowns linked under the calculator cover the plans in detail.
Like what the math says?
Create an account, top up in USD, and your per-token price is locked in for the whole balance.
Get an API keyRunning millions of tokens a day? Write to info@trustedrails.com for volume terms.