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Grok 4

Retired May 2026

xAI's flagship reasoning model, released July 2025 and trained with reinforcement learning at pretraining scale on the Colossus cluster, aimed at complex multi-step tasks.

Context
256K tokens
Cutoff
Released
Visit xAI Compare vs other LLMs →

Hosted API price

Cheapest via Azure · per 1M tokens

USD
Input
$3.00 /1M
Output
$15.00 /1M
Hosted by
Azure 1 provider

Hosted API pricing

How we price

Order

Providers are listed cheapest input rate first, then by output rate, a tie going to the creator's own listing. A provider that lists the model without a published rate sits at the end.

Prices

Base-tier, on-demand rates in USD per 1M tokens, converted at ECB reference rates where a provider publishes in another currency. Cached-input and batch rates show only where a provider publishes them. "Cheapest" marks the one provider with the lowest input and output pair; a tie wears no badge.

Cost

Input rate times the input tokens plus output rate times the output tokens, at the monthly volume set above the table. Cached-input, batch, long-context and reasoning-token billing are not modelled.

Transparency and funding

  • Affiliates: Affiliate links are marked. We may earn a commission if you click them, but commissions never affect the order.

Every provider serving Grok 4, cheapest input first. Set your monthly volume to see what each would bill.

Every provider serving Grok 4, with its price per 1M input and output tokens and what the volume above would cost
Provider Input /1M Output /1M Cost at 10M in + 2M out Link
Microsoft Azure logo Azure $3.00 $15.00 $60.00 Visit website

Heads up: Base-tier, on-demand rates per 1M tokens; cached, batch and long-context tiers excluded. A provider may serve a shorter context or a quantized build than the creator's release. Verify before provisioning. More on how we price.

Similarly priced models

The models nearest Grok 4 by blended rate, each at its own cheapest provider.

Models priced nearest Grok 4 per 1M tokens, each at its cheapest provider
Model Blended /1M Input /1M Output /1M Context Cutoff vs Grok 4
OpenAI GPT-5.2 OpenAI $3.7917 $1.75 $14.00 400K Aug 2025 −24%
OpenAI GPT-5.3-Codex OpenAI $3.7917 $1.75 $14.00 400K Aug 2025 −24%
OpenAI GPT-5.4 OpenAI $4.5833 $2.50 $15.00 1M Aug 2025 −8%
Anthropic Claude Sonnet 4.5 Anthropic $5.00 $3.00 $15.00 200K Jan 2025 0%
Anthropic Claude Sonnet 4.6 Anthropic $5.00 $3.00 $15.00 1M Aug 2025 0%
xAI Grok 4 This model xAI $5.00 $3.00 $15.00 256K Oct 2024
Anthropic Claude Opus 5.5 Anthropic $6.6667 $4.00 $20.00 1M Jun 2026 +33%
Meta Muse Wonder Meta $6.6667 $4.00 $20.00 1M +33%
Anthropic Claude Opus 4.5 Anthropic $8.3333 $5.00 $25.00 200K May 2025 +67%
Anthropic Claude Opus 4.6 Anthropic $8.3333 $5.00 $25.00 1M May 2025 +67%
Anthropic Claude Opus 4.7 Anthropic $8.3333 $5.00 $25.00 1M Jan 2026 +67%

USD per 1M tokens at each model's cheapest listed provider. Blended is the cost of 10M input plus 2M output tokens, spread over the 12M.

Capabilities

What Grok 4 accepts and can do, as published by xAI.

  • Text Accepts and generates natural-language text.
  • Image Accepts images as input alongside text.
  • Reasoning Thinks before it answers, always on or as a switchable mode.
  • Function calling Connect to external tools, APIs, and systems.
  • Structured output Return responses in structured formats like JSON.

Common questions

What is Grok 4 good for?

Multi-step reasoning over text and images. It was xAI's flagship reasoning model from July 2025 until its retirement.

When is Grok 4 not a good fit?

Any new work: xAI retired it in May 2026, and its migration guide points to Grok 4.3 with low reasoning effort. No built-in web search or code execution, and closed weights.

What is the cheapest way to run Grok 4?

The cheapest hosted rate is $3.00 / $15.00 per 1M tokens via Azure.

How does Grok 4 compare with Grok 4.3?

xAI describes Grok 4.3 as a fast, reliable model with strong tool calling and instruction following, and it adds a configurable reasoning effort with a no-reasoning setting, which Grok 4 did not offer. Same text and image input. Grok 4 costs 140% more per 1M input tokens and 500% more per 1M output tokens than Grok 4.3, at each model's cheapest listed provider. It came out 9 months earlier and has a smaller context (256K against 1M tokens).

Can I self-host Grok 4?

No. xAI does not publish the weights; Grok 4 is available only through hosted APIs.

More from xAI

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    From $2.00 / $6.00 /1M in / out at the cheapest provider
  • Grok 4.5 500K context · cutoff Feb 2026
    From $2.00 / $6.00 /1M in / out at the cheapest provider
  • Grok 4.6 500K context · cutoff Jan 2026
    From $2.00 / $6.00 /1M in / out at the cheapest provider
  • Grok 4.20 (Non-Reasoning) 1M context
    From $1.25 / $2.50 /1M in / out at the cheapest provider
  • Grok 4.20 (Reasoning) 1M context
    From $1.25 / $2.50 /1M in / out at the cheapest provider
  • Grok 4.3 1M context
    From $1.25 / $2.50 /1M in / out at the cheapest provider
  • Grok Build 0.1 256K context
    From $1.00 / $2.00 /1M in / out at the cheapest provider
  • Grok Code Fast 1 256K context
    From $0.20 / $1.50 /1M in / out at the cheapest provider
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