Prompt Pricing vs
OpenAI Tokenizer
OpenAI Tokenizer is the gold-standard visualization for GPT tokenization. Prompt Pricing covers what comes next: turning a token count into a real dollar number — and doing it for every major LLM provider, not just OpenAI.
Try Prompt Pricing (Free) →Prompt Pricing vs OpenAI Tokenizer — Feature Comparison
| Feature | Prompt Pricing | OpenAI Tokenizer |
|---|---|---|
| Shows tokenization visualization | No | Yes — colored token chunks |
| Covers OpenAI models | Yes — GPT-4o, GPT-4o-mini, o1, o3 | Yes — all current GPT models |
| Covers Claude / Gemini / others | Yes — Claude Opus/Sonnet/Haiku, Gemini Pro/Flash | No — OpenAI only |
| Dollar cost output | Yes — per-call cost per provider | No — token count only |
| Cache-discount math | Yes — Claude cache writes/reads | N/A |
| Best for visualizing tokenization | No | Yes |
| Best for cost comparison | Yes | No |
| Free, no signup | Yes | Yes |
Pick Prompt Pricing when…
You need to make a real product decision: "is GPT-4o or Claude Sonnet cheaper for our use case?" Paste your prompt, see dollar costs side-by-side across providers, including cache savings for Claude. No tokenization curiosity required.
Pick OpenAI Tokenizer when…
You want to teach (or learn) how GPT models actually split text into tokens. The colored-block visualization is unbeaten for understanding why some strings cost more than others, and it covers every OpenAI model with byte-perfect accuracy.
Ready to try Prompt Pricing?
Beyond token counts — see what your prompt actually costs across every provider. Free, no signup, runs in your browser.
Open Prompt Pricing →Or visit OpenAI Tokenizer if you prefer their workflow.
Frequently Asked Questions
Which is better for cost estimation — Prompt Pricing or OpenAI Tokenizer?
Prompt Pricing. OpenAI Tokenizer stops at the token count; you still need to multiply by the per-million-token rate. Prompt Pricing does that automatically for every major provider, including Claude and Gemini.
Is the OpenAI Tokenizer free?
Yes — platform.openai.com/tokenizer is free and does not require an API key.
When should I use OpenAI Tokenizer instead?
When you want to visually understand how a specific string is tokenized by GPT-4o or GPT-4 — for example, to debug why a prompt is using more tokens than expected. The colored-token UI is the best educational tool for this.
Does OpenAI Tokenizer work for Claude prompts?
No. Each model family uses its own tokenizer. OpenAI Tokenizer is accurate for GPT models only. Claude uses a different tokenizer, so the token counts will be different.
Can Prompt Pricing show cache savings?
Yes — for Claude models Prompt Pricing surfaces the prompt-cache write / read rates separately, so you can see the cost difference between a cold first call and warm cache hits.