I use:
> Claude API workbench (https://console.anthropic.com)
> ChatGPT API playground (https://platform.openai.com/playground/)
> Gemini through Google AI Studio (https://aistudio.google.com)
I only pay based on usage, simply add your credit card to billing and no need to pay subscriptions! > Grok
Using Claude, ChatGPT, Gemini, and Grok APIs with usage-based billing
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