Grok API Pricing: Every Model, Token Cost, And How To Spend Less

Grok 4.6, released by xAI on August 12, 2026, is presented as its flagship API model for long-running agents, coding, research, and interactive visual tasks, with a 500,000-token context window and standard pricing of $2 per million input tokens, $0.50 for cached input, and $6 for output. Requests with prompts of 200,000 tokens or more are billed entirely at doubled long-context rates, making context management important for multi-turn agents that repeatedly resend histories, documents, and tool results. Grok 4.5 remains available at similar core prices but with cheaper cached-input pricing, while Grok 4.3 and the Grok 4.20 variants offer lower-cost general-purpose and specialized reasoning options with one-million-token context windows, and Grok Build 0.1 is positioned as the least expensive coding-focused model. Beyond token charges, xAI bills separately for server-side tools, voice, image and video generation, storage, downloads, and certain policy violations, while priority processing doubles token rates and selected models receive batch-processing discounts. The comparison emphasizes that Grok 4.6 has lower listed token prices than GPT-5.6 Sol and Claude Opus 5, but advises evaluating practical factors such as quality, latency, reliability, caching, tool use, provider availability, and workload-specific performance before selecting a model.

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