Build advanced reasoning agents with Grok 4.2 Fast, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $3.00/1M input and $9.00/1M output tokens, native tool calling support. Access Grok 4.2 Fast via the ZenMux API with up to 30K output tokens.
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Grok 4.2 Fast by ZenMux costs $3.00 per 1M input tokens and $9.00 per 1M output tokens.