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Grok Bot costs $200/mo but works out of the box. Hermes gets smarter over time for free. OpenClaw has 5,400 skills. Full comparison of features, pricing, and which one fits your workflow.
Claude Code costs $33 per task but ships cleaner code. Codex costs $12 and is 10x more token-efficient. Full comparison of architecture, pricing, benchmarks, and when to pick which.