Prompt planning tool

Prompt token calculator

Translate a prompt’s input, output and repeat frequency into a cost-sensitive scenario.

Prompt Token Calculator

Plan the token footprint of a prompt, retrieved context and expected output.

Workload

Requests / month

Success rate (%)Tasks completed without needing a rerun

Model usage

Rate cardSource-linked public list pricing; update before planning spend

Agent steps / task

Input tokens / step

Output tokens / step

Cached input (%)

Users / tenants (optional)

Custom input $ / 1M

Custom cached input $ / 1M

Custom output $ / 1M

Agent behavior

Retry rate (%)Extra requests after failures or incomplete outputs

Observability / task ($)Traces, logs, evaluation and retention allowance

Human review / task ($)Optional escalation or quality-review allowance

Planning range (%)Visible uncertainty around your chosen assumptions

RAG & tools

Tool & web calls / task ($)Third-party APIs, browser or search services

RAG & storage / task ($)Embeddings, vector reads and storage allowance

Estimated monthly cost

Planning range: —

↘ Model your drivers

$0.000Cost / request

$0.000Cost / successful task

—Cost / 100 users

Cost breakdown (monthly)

Model tokens$0

Tools & RAG$0

Observability$0

Human review$0

Retries$0

Top driver: model tokens

Try caching stable context to reduce repeated input cost.

⌁ How the estimate works

Monthly cost combines model tokens, tools, RAG, observability, human review and retry behavior from your editable assumptions.

monthly = model + tools + RAG + observability + human review + retries

▣ Sources & assumptions

Rate records are source-linked and versioned. Always check the provider page before final budgeting.

OpenAI pricing ↗Gemini pricing ↗Methodology →

? FAQ

Why can an invoice differ? Contracts, taxes, regional pricing, tool metering and usage behavior can change the final bill.

Reconcile an invoice →

Prompt length is a product decision

Longer prompts may improve reliability, but they can repeat across agent steps. Test the smallest context that sustains task quality and cache stable content when your provider’s documented behavior supports it.

Frequently asked questions

Does API list pricing equal my monthly cost?

No. List pricing is one input. Your bill can also reflect output length, cache behavior, retries, tool calls, storage, regional or contract terms, taxes and provider-specific metering.

Why estimate cost per successful task?

Requests that fail, retry, or need manual recovery still consume resources. Cost per successful task connects technical usage to the outcome your product actually delivers.

Can I use custom pricing?

Yes. Select Custom rates in the calculator and enter your own input and output price per million tokens. This is useful for negotiated or provider-specific terms.