Token counter

Estimate input tokens and total price for OpenAI, Gemini, and Claude models. This is a planning estimate, not a billing source of truth.

Model

Expected output tokens

Input text

Pricing model: 2.5/1M input tokens and 15/1M output tokens.

Official docs (research sources)

OpenAI: Official guidance uses model tokenizers (for example tiktoken) for exact counts. Token docs · Pricing docs
Gemini: Docs state roughly 1 token ~ 4 characters and provide the countTokens API. Token docs · Pricing docs
Claude: Docs provide a count_tokens endpoint and note counts are estimates. Token docs · Pricing docs

Gemini docs explicitly mention approx. 1 token ≈ 4 characters and provide a `countTokens` API; Claude docs provide `messages.count_tokens` and note counts are estimates; OpenAI docs recommend model tokenizer-based counting (for example tiktoken) for exact results.

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Token counter

Official docs (research sources)

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