X

xAI’s main product is Grok, an AI chatbot designed to be witty, rebellious, and deeply integrated with real-time data from X (formerly Twitter)

Plans tracked

no add-ons

Pricing changes

Latest Wk 35 '26

Pricing model

Usage-based

No free tier

Pricing Change History

10 changes

202610 changes

Aug 24, 2026

Improvement

Weekly

X drops grok-4.5, adds Imagine image/video models and free Playground perk

'Build on your own' plan's 4th benefit bullet changed from a generic documentation callout to a specific free Playground callout for testing Grok models before paying. Main pricing table narrowed to only grok-4.6 (grok-4.5 no longer shown, only referenced in a collapsed FAQ); two new Imagine models grok-imagine-image-2.0 (from $0.04/img) and grok-imagine-video-1.5 (from $0.08/sec) were added.

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Aug 5, 2026

Packaging

Weekly

x.ai: Speech-to-Speech Voice API pricing changed from flat rate to starting-at

Voice API Speech-to-Speech cost changed from a flat rate '$0.05/min ($3.00/hr)' to 'Starting at $0.05/min' — the explicit hourly-rate conversion was dropped, signaling variable/tiered pricing.

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Jul 13, 2026

Packaging

Weekly

X swaps flagship model — grok-4.5 costs more, sees less, drops coding model

xAI replaced grok-4.3 with grok-4.5 as the flagship model (smaller 500k vs 1M context, higher price $2.00/$6.00 vs $1.25/$2.50 per M tokens) and removed the grok-build-0.1 coding model entirely.

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Jul 4, 2026

Improvement

Quarterly

xAI: Grok lineup replaced (grok-4.3, grok-build-0.1), smaller context windows

Added File management capability: upload documents and let Grok intelligently search and reason over PDFs, spreadsheets, presentations, and more. Flagship API model lineup fully replaced: grok-4.20-reasoning/non-reasoning ($2.00/$6.00) and grok-4-1-fast ($0.20/$0.50) removed; grok-4.3 ($1.25/$2.50) and grok-build-0.1 ($1.00/$2.00) added. Imagine and Voice API pricing now itemized on the page.

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May 29, 2026

Packaging

Weekly

X launches Grok coding model and image/video/voice API pricing

New grok-build-0.1 coding model added to API pricing at $1.00 input / $2.00 output per 1M tokens with 256k context window, in early access. Imagine API pricing section added with grok-imagine-image-quality ($0.01/img), grok-imagine-image ($0.002/img), and grok-imagine-video ($0.01/sec); Voice API pricing added: Realtime $0.05/min, TTS $15.00/1M chars, STT $0.10-$0.20/hr.

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May 19, 2026

Improvement

Weekly

X updates capabilities: New video generation feature added with audio.

Capabilities section updated: Video generation (New, with synchronized audio) added; Reasoning capability removed; Imagine API link added to hero banner alongside Grok 4.3 API.

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May 5, 2026

Price decrease

Weekly

X debuts grok-4.3 at $1.25/$2.50 per 1M tokens, slashes grok-4.20 rates

grok-4.20-reasoning and grok-4.20-non-reasoning prices cut: text input $2.00→$1.25/1M tokens (-37.5%), output $6.00→$2.50/1M tokens (-58.3%). New flagship model grok-4.3 added to main pricing at $1.25/1M input and $2.50/1M output tokens with 1M context window, replacing grok-4.20 as featured model.

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Feb 18, 2026

Improvement

Weekly

X adds real-time voice AI, drops structured outputs from API

Added Voice API capability: build real-time voice agents with speech-to-text, text-to-speech, and conversational AI. Marked as New. Structured outputs capability removed from the API capabilities section.

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Jan 23, 2026

Packaging

Quarterly

X Introduces New grok-4.1 Models with Enhanced Image Input Pricing and Tool Calling Features

grok-3 model removed from main pricing table Image Input pricing capability added to grok-4.1-fast models at $0.20/M tokens

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Jan 23, 2026

Packaging

Quarterly

X Introduces Grok-4 Flagship Model with 256k Context Window and New Enterprise Features

grok-4-fast-non-reasoning model introduced with 2M context window at $0.20 input/$0.50 output per million tokens grok-code-fast-1 model introduced with 256k context window at $0.20 input/$1.50 output per million tokens

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