LLM Providers

Tiktokenizer

Tokenizer for OpenAI large language models.

Status
Generally available
Last checked
Checked · Oct 12, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

A tokenizer designed to work with OpenAI's large language models, facilitating text preprocessing and tokenization tasks essential for natural language processing applications.

Provides optimized tokenization specifically tailored for OpenAI models, making it an essential tool for developers working with these models.

When it fits — and when it doesn’t

A good fit for

  • Developers working on projects that require tokenization compatible with OpenAI's models

  • Teams needing efficient text processing tools for large language model training and inference

Look elsewhere if

  • Projects requiring real-time tokenization services (this is a local library)

  • Applications that need to support multiple languages beyond JavaScript/TypeScript

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited documentation and examples for TypeScript users

    Primary documentation focuses on Python, with sparse TypeScript-specific guidance

  2. 02

    Performance issues when tokenizing large datasets

    Benchmark tests show significant slowdowns for inputs over 10k tokens

What it does well

  • Optimized for OpenAI models

  • Efficient text tokenization

  • Supports both JavaScript and TypeScript

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up Tiktokenizer

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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Tiktokenizer — tracked on AI Navigator

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