HeyTensor

Free browser-based PyTorch tensor shape calculator for debugging neural networks.

About HeyTensor

HeyTensor is a browser-based calculator that computes tensor output shapes for PyTorch and TensorFlow layers without running code. It covers fourteen layer types including convolution, linear, LSTM, and attention, offers a chain mode that traces shapes through a whole network, architecture presets such as LeNet and Transformer encoders, and a paste-error mode that parses PyTorch RuntimeErrors to locate the failing layer. It targets ML engineers, students, and researchers.

HeyTensor website preview

Live preview of heytensor.com via the WordPress mShots service — it can take a few seconds to generate on a first visit.

HeyTensor: strengths & things to check

Strengths

Free tier available — you can start without paying (freemium model).
Covers pytorch, tensor, calculator, debugging — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

The full feature set sits behind a paid plan — check which limits the free tier carries on the official site before committing.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 1164 tools in the Developer Tools category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

HeyTensor pricing

Pricing model	Freemium — a free tier lets you start, and paid plans are available if you need more.
Free access	Yes — free tier, paid upgrades available
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	heytensor.com

HeyTensor key facts

Category: Developer Tools
Pricing: Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas: pytorch, tensor, calculator, debugging
Official site: heytensor.com

HeyTensor FAQ

How much does HeyTensor cost?

Freemium — a free tier lets you start, and paid plans are available if you need more. Current plans and prices are listed on the official site (heytensor.com).

What is HeyTensor used for?

Free browser-based PyTorch tensor shape calculator for debugging neural networks. Its focus areas in the Developer Tools category: pytorch, tensor, calculator, debugging.

Where can I try HeyTensor?

On its official site, heytensor.com — the Visit Official Site button above goes straight there.

HeyTensor vs alternatives

	HeyTensor	Beeceptor	Bugsink	Charles Proxy
Pricing	Freemium — a free tier lets you start, and paid plans are available if you need more.	Freemium — a free tier lets you start, and paid plans are available if you need more.	Freemium — a free tier lets you start, and paid plans are available if you need more.	Paid — this directory does not list a free tier for it.
Focus areas	pytorch, tensor, calculator, debugging	mock server, api mocking, webhooks, debugging	errors, tracking, crashes, debugging	proxy, http, debugging
Official site	heytensor.com	beeceptor.com	bugsink.com	charlesproxy.com
Directory status	Listed	Listed	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Developer Tools category

Editors, platforms, and services developers rely on to build and ship software. The Developer Tools category on Tools Hub currently lists 1164 tools. Alongside HeyTensor, it includes LochBot, Netron, Cronicle, Healthchecks.

FreemiumDeveloper Toolspytorchtensorcalculatordebugging

Alternatives to HeyTensor

Tools in the same Developer Tools category that share focus areas with HeyTensor — worth comparing before you commit:

Developer Tools

Beeceptor

Mock API server and webhook inspection service

Freemiummock-serverapi-mockingwebhooksdebugging

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Bugsink

Self-hosted error tracking compatible with Sentry SDKs

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Charles Proxy

HTTP proxy and monitor for developers

Paidproxyhttpdebugging

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Fiddler Classic

Free web debugging proxy for Windows

Freeproxyhttpdebugging

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Insomnia

Collaborative API client for design, testing and debugging

Freemiumapitestingapi-clientdebugging

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Kodezi

AI CTO that debugs and keeps codebases healthy

Freemiumdebuggingcode-qualityai-codingautomation

More in Developer Tools

Comparing tools in the Developer Tools category? These related listings are worth a look: LochBot — Free prompt injection checker testing system prompts against 31 attack patterns; Netron — Visualizer for neural network, deep learning and machine learning models; Cronicle — Multi-server task scheduler and runner with a web-based user interface.