Quick Answer
ChatGPT and Claude both offer strong free tiers. DeepSeek is generous for budget users.
Detailed Answer
ChatGPT offers GPT-4o mini free with occasional GPT-4o access. Claude provides free access to Claude 3.5 Sonnet with usage limits. Gemini is free with Google account. DeepSeek has a generous free tier. For most users, trying both ChatGPT and Claude free is the best starting point.
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Find Your Own Answer
The best way to decide is to try them yourself. Council lets you compare multiple AI responses to the same question.