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AI Token Counter — Gratis online tool

Tel tokens voor GPT-4, Claude, Gemini — met kostenschatting

Tel GPT-4, GPT-3.5, Claude en Gemini tokens. Schat API-kosten in. 100% client-side — onbeperkt en privé. Zonder registratie.

Tokens for GPT-4o
0
0 characters 0 words 0 tokens/word

💰 Kosten estimate

As input (this text sent to AI)$0.000
As output (AI generates this length)$0.000
1,000 runs as input$0.00
Context window usage 0 / 0
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Meer weten

Free GPT / Claude / Gemini token counter with cost estimates

Toololis AI Token Counter counts tokens for every major AI model: GPT-4o, GPT-4, GPT-3.5, Claude 3 Opus/Sonnet/Haiku, Gemini Pro/Flash. Live cost estimates for input and output tokens. 100% client-side — your prompts never leave your browser.

How to use this tool

  1. 1

    Paste your text or prompt

    Any text — prompts, documents, code, JSON payloads.

  2. 2

    Pick the AI model

    GPT-4, GPT-3.5, Claude 3, Gemini — each uses different tokenizers.

  3. 3

    Read token count + cost

    Live token count for the chosen model, plus estimated input/output API costs.

Token rules of thumb

  • English: ~1 token per 0.75 words (~4 characters per token)
  • Code: more tokens per character due to special symbols
  • Neen-English: ~1.5-3× more tokens (especially CJK languages)
  • JSON: 20-40% overhead from brackets and quotes
  • Numbers: each digit is often a token

Current API pricing (2026, per 1M tokens)

ModelInputOutputContext
GPT-4o$2.50$10.00128K
GPT-4 Turbo$10.00$30.00128K
GPT-3.5 Turbo$0.50$1.5016K
Claude 3 Opus$15.00$75.00200K
Claude 3.5 Sonnet$3.00$15.00200K
Claude 3 Haiku$0.25$1.25200K
Gemini 1.5 Pro$1.25$5.001M+
Gemini 1.5 Flash$0.075$0.301M

Prijss are reference as of our . Always verify on the provider's official pricing page before budgeting.

Frequently Asked Questions

What is a token?
A token is a chunk of text the AI model processes. Roughly 1 token = 0.75 words in English. The word "Understanding" might be 1 token; "Unbelievability" might be 3 tokens. Tokens are fundamental to AI pricing and context limits.
Why do different models count differently?
Each model uses a different tokenizer. GPT-4 uses cl100k_base. GPT-3.5 and embeddings use similar. Claude uses its own tokenizer (similar counts, slightly different). Gemini uses Google's SentencePiece-based tokenizer (~1.3× GPT counts on average).
Is this 100% accurate for GPT?
Yes — we use the official gpt-tokenizer library that mirrors OpenAI's cl100k_base encoding. Matches tokens exactly.
Is Claude count accurate?
Approximate. Anthropic doesn't publish their tokenizer. Our Claude estimate is ~±5% accurate based on published characteristics. For exact Claude costs, use Anthropic's official count_tokens API endpoint.
Why are my prompts expensive?
Common mistake: sending full conversation history each turn. If you send a 5,000-token context + 500-token query 10 times = 55,000 tokens input billed. Reduce by summarizing history periodically.
Is my text uploaded?
Nee. Tokenization runs in your browser. Your prompts, code, or proprietary content never leave your device.

Belangrijkste punten

  • AI Token Counter is a free, browser-based developer tool — count tokens for gpt-4, claude, gemini — with cost estimates.
  • Nee signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use AI Token Counter

  1. Open the tool: Launch AI Token Counter on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

AI Token Counter — Quick Facts

Prijs
Gratis — geen limieten, geen watermerk, geen paywall
Privacy
100% in de browser — geen data verlaat je apparaat
Platform
Elke moderne browser — desktop, tablet of mobiel
Categorie
Developer Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FunctieDetails
ToolAI Token Counter
CategorieDeveloper
Aanmelden vereistNee
Bestand uploadenGeen — verwerkt in browser
Mobiel ondersteundVolledig responsive
KostenVoor altijd gratis

Why Use AI Token Counter?

You should try AI Token Counter for a quick, private way to count tokens for gpt-4, claude, gemini — with cost estimates. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacy. Deze tool draait volledig in je browser. Je gegevens worden nooit naar een server geüpload.