xAI adds a long-context rate column to Grok API pricing
xAI restructured Grok API token pricing into short-context and long-context columns. Crossing a model's long-context threshold reprices every token in that request at roughly 2x.
One rate per model per token type, split across separate Code API and Chat API tables — grok-4.5 $2.00 in / $6.00 out, grok-4.3 $1.25 / $2.50, grok-build-0.1 $1.00 / $2.00 per 1M tokens.
A single Text API table with short-context and long-context rates. Short context is unchanged; long context is grok-4.5 $4.00 in / $0.60 cached / $12.00 out, grok-4.3 and the grok-4.20 variants $2.50 / $0.40 / $5.00, grok-build-0.1 $2.00 / $0.40 / $4.00.
xAI’s docs pricing page now publishes two rate columns per model instead of one. The mechanic is stated plainly on the page: “Models with long context pricing bill the long context rates for all tokens in a request once its prompt reaches the model’s long context threshold.” That is a cliff, not a tier — a request that crosses the threshold does not pay a blended rate, it pays the higher rate on every input, cached, and output token in the call.
The same release folded the previously separate “Code API” (grok-build-0.1) and “Chat API” tables into a single “Text API” table, so the coding model and the chat models now sit on one rate card.
For buyers, prompt size becomes a first-class cost control on Grok: a RAG or long-transcript workload that habitually pushes past the threshold effectively pays double the headline rate, while the same token volume split across smaller requests stays on the short-context column.
xAI merges the separate Code API and Chat API rate tables into a single Text API table and adds a second rate column for long context, roughly 2x the short-context rate: grok-4.5 $4.00 in / $0.60 cached / $12.00 out, grok-4.3 and the grok-4.20 variants $2.50 / $0.40 / $5.00, grok-build-0.1 $2.00 / $0.40 / $4.00. Crossing a model's long-context threshold reprices every token in that request, not just the tokens past the line. In the same release grok-4.5 cached input drops from $0.50 to $0.30 per 1M tokens (-40%), while short-context headline rates, agentic tool rates, Batch (−20%), Priority (2x) and consumer plans are unchanged. (Source: docs.x.ai/docs/pricing, live capture 2026-07-21.)