Provider

xAI API Cost Calculator and Comparison

Every xAI model, side by side — current API rates, context window, benchmarks, and a live calculator that ranks them at your exact workload. 3 active models, 3 with public pricing, starting from $3.00/1M input. Prices refreshed daily from xAI’s official pricing page.

Models tracked

3

Active

3

With public pricing

3

Cheapest input

$3.00/1M

As of April 2026, xAI offers 3 active AI models via API, starting at $3.00/1M input tokens. The most context-rich model handles up to 256K tokens. Models include support for vision, tool use. All prices are in USD per 1 million tokens; output tokens cost more than input on every model.

Interactive

Calculate your xAI API cost at your workload.

Set your workload — every priced model ranks in real time.

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Every model below updates in real time.

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Ranked by your monthly bill

No models with public pricing available to compare right now.

Pricing at a glance

Blended $/1M tokens across the lineup.

Blended price uses a 3-to-1 input/output ratio — a common industry standard. Green bar = cheapest.

Quick picks

Best xAI model for your use case.

Lowest cost

Grok 4.1

$3.00/1M input

Largest context

Grok 4

256K tokens

Tool use / agents

Grok 3

Function calling

Every model

Every xAI model — pricing, context & capabilities.

ModelContextInput /1MOutput /1M
Grok 4.1256K$3.00$15.00
Grok 4256K$3.00$15.00
Grok 3131K$3.00$15.00

FAQ

xAI — questions we see most.

Pricing patterns, best-known use cases, and how this provider stacks up.

Get instant answers from our AI agent

xAI API pricing ranges starting at $3.00 per 1M input tokens. Output tokens cost more than input on every model. Prices are per 1 million tokens (1M ≈ 750,000 words). Use the calculator above to estimate your monthly spend at your actual workload.
Grok 4.1 is the lowest-priced xAI model with public pricing at $3.00/1M input tokens. It suits high-volume tasks where cost matters most — classification, extraction, summarization, and similar workloads that don't need frontier reasoning.
Grok 4.1 is xAI's highest-tier model at $3.00/1M input. It delivers the most sophisticated reasoning, instruction-following, and nuance. For workloads that don't require frontier performance, a mid-tier model typically cuts inference costs substantially.
Grok 4.1, Grok 4, Grok 3 support function calling (tool use), required for agentic workflows. Agents need a model that reliably follows structured output schemas — test with your specific tool definitions before committing to production volumes.
Yes — Grok 4.1, Grok 4 accept image input alongside text. You can pass screenshots, photos, charts, and documents for analysis. Vision adds no separate line-item on most xAI models — you're billed for the token equivalent of the image.
Yes — xAI supports prompt caching (discounts for repeated context). These rates appear in the table above under "Cached /1M" and "Batch /1M." Caching pays off quickly if your prompts share a long system prompt or document prefix across many calls.
xAI has historically adjusted prices when launching new model generations, often cutting rates to stay competitive. Buzzi.ai snapshots pricing daily — you can subscribe to price-drop alerts on any xAI model using the "Alert me" button on its detail page.
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