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Gpt-tokenizer vs Js-tiktoken

Side-by-side NPM package comparison

gpt-tokenizer

Popular

Version 3.4.0

69
Good

A pure JavaScript implementation of a BPE tokenizer (Encoder/Decoder) for GPT-2 / GPT-3 / GPT-4 and other OpenAI models

Weekly Downloads
444.8K
↑7%
Bundle (gzip)
1011.3 KB
Updated
Vulns
0

Health Score Breakdown

Maintenance
60
Popularity
80
Quality
50
Security
100
Stability
70

js-tiktoken

Very Popular

Version 1.0.21

67
Good

JavaScript port of tiktoken

Weekly Downloads
3.3M
↑11%
Bundle (gzip)
2.5 MB
Updated
Vulns
0

Health Score Breakdown

Maintenance
40
Popularity
100
Quality
50
Security
100
Stability
70

Choosing between Gpt-tokenizer and Js-tiktoken? Here's a data-driven comparison based on real npm data — downloads, bundle size, health scores, and more — to help you decide which package fits your project best.

Downloads & Popularity

Js-tiktoken leads with 3.3M weekly downloads — roughly 7.3x more. Gpt-tokenizer has 444.8K weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Gpt-tokenizer has the smallest gzipped bundle at 1011.3 KB. Js-tiktoken comes in at 2.5 MB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Gpt-tokenizer has an overall health score of 69/100 (good), with strong security, popularity scores. Js-tiktoken has an overall health score of 67/100 (good), with strong security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.

When to Choose Each

Choose Gpt-tokenizer if you value strong security track record. Choose Js-tiktoken if you value large community support, strong security track record.

Our Verdict

Both Gpt-tokenizer and Js-tiktoken are solid choices for JavaScript development. Gpt-tokenizer has the edge in overall health score (69/100), while each package brings unique strengths to the table. Evaluate them based on your project's priorities — whether that's community size, bundle efficiency, or maintenance activity — and choose the one that aligns best with your requirements.

Frequently Asked Questions

Is gpt-tokenizer better than js-tiktoken?
It depends on your needs. Gpt-tokenizer has a health score of 69/100 while Js-tiktoken scores 67/100. Js-tiktoken has more weekly downloads (3.3M), suggesting broader adoption. Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
Which has a smaller bundle size, gpt-tokenizer or js-tiktoken?
Gpt-tokenizer has the smaller gzipped bundle at 1011.3 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use gpt-tokenizer vs js-tiktoken?
Based on npm download statistics, Gpt-tokenizer has approximately 444.8K weekly downloads and Js-tiktoken has approximately 3.3M weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
Which is better maintained, gpt-tokenizer or js-tiktoken?
Gpt-tokenizer currently has the higher overall health score at 69/100. Gpt-tokenizer has a maintenance score of 60/100 and Js-tiktoken scores 40/100 on maintenance.

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