Free AI tools for Create custom GPTs for specialized workflows

Every tool listed here offers a free tier or freemium plan. No credit card required. · 706 reads

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Free options

ChatGPT

Best overallChecked 1h agoLink OKFree plan available
Why it wins

GPT Builder lets you define instructions, upload knowledge files, and add web/code/image tools, publish a custom GPT for your team or publicly in minutes.

When not to use

Requires ChatGPT Plus or Team plan. custom GPTs run only within the OpenAI ecosystem.

Relevance AI

Best for teamsChecked 1h agoLink OKFree plan available
Why it wins

Build custom AI agents with tool access (email, web, APIs, spreadsheets) that non-technical teammates can trigger via a chat interface, no code required.

When not to use

Usage-based pricing. more powerful but more complex to set up than a simple custom GPT.

SwapOptimizer

best for specialized workflowsChecked 59m agoDead linkFree plan available
Why it wins

SwapOptimizer compares DEX swap prices (Uniswap, Curve, 1inch aggregator) to route trades through the path with lowest slippage and gas fees.

When not to use

Skip if the workflow above is not a close match. compare the rest of this list first.

Comparison

ToolPricingVerifiedLink
ChatGPTFree plan availableChecked 1h agoTry →
Relevance AIFree plan availableChecked 1h agoTry →
SwapOptimizerFree plan availableChecked 59m agoTry →

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