What is the difference between OpenAI and xAI?

OpenAI and xAI are both cloud GPU providers offering different pricing models, features, and GPU availability. Use our comparison tool to see real-time pricing and feature differences.

Which is cheaper: OpenAI or xAI?

Pricing varies by GPU model and usage requirements. Check our real-time comparison table to find the best deals for your specific needs.

Can I switch between OpenAI and xAI?

Yes, both providers offer flexible cloud GPU services. However, consider factors like data transfer costs, setup time, and specific features when switching between providers.

OpenAI vs xAI

Compare LLM inference API pricing between OpenAI and xAI. Find the best rates for AI training, inference, and ML workloads.

OpenAI

Provider 1

Models Available

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xAI

Provider 2

Models Available

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Comparison Overview

Total LLM Models

OpenAI Models

xAI Models

Direct Comparisons

LLM API Pricing Comparison

Total models: 33Both available: 0OpenAI: 28xAI: 5

Showing 15 of 33 models

Prices per 1M tokens · Last updated: 10/22/2026, 3:33:51 PM

Model ↑	OpenAI	xAI	Input Diff ↕
GPT-3.5 Turbo OpenAI	$0.500 in $1.50 out	Not available	—
GPT-4.1 OpenAI	$2.00 in $8.00 out	Not available	—
GPT-4.1 mini OpenAI	$0.400 in $1.60 out	Not available	—
GPT-4.1 nano OpenAI	$0.100 in $0.400 out	Not available	—
GPT-4o OpenAI	$2.50 in $10.00 out	Not available	—
GPT-4o mini OpenAI	$0.150 in $0.600 out	Not available	—
GPT-5 OpenAI	$1.25 in $10.00 out	Not available	—
GPT-5 mini OpenAI	$0.250 in $2.00 out	Not available	—
GPT-5 Nano OpenAI	$0.050 in $0.400 out	Not available	—
GPT-5 Pro OpenAI	$15.00 in $120.00 out	Not available	—
GPT-5.1 OpenAI	$1.25 in $10.00 out	Not available	—
GPT-5.2 OpenAI	$1.75 in $14.00 out	Not available	—
GPT-5.2 Pro OpenAI	$21.00 in $168.00 out	Not available	—
GPT-5.4 OpenAI	$2.50 in $15.00 out	Not available	—
GPT-5.4 Mini OpenAI	$0.750 in $4.50 out	Not available	—

Features Comparison

OpenAI

GPT Model Family
GPT-6 Astra for complex reasoning and coding, GPT-6 Sol to balance capability and cost, and GPT-6 Luna for cost-sensitive, high-volume workloads
Reasoning Models
Reasoning models for multi-step, complex tasks
Image Generation
Generate images as output with GPT Image 2
Realtime and Audio
Realtime API for voice applications plus endpoints to analyze, transcribe, and generate audio
Multimodal Capabilities
Process text, images, audio, and video inputs with unified models
Function Calling
Structured outputs and tool use for building agents and workflows

xAI

Grok text models
Chat Completions and Responses endpoints for the Grok models, with configurable reasoning and tool calling
Server-side tools
Web Search, X Search, code execution, file and collection search, and remote MCP tools billed per invocation on top of tokens
Imagine and Voice APIs
Image and video generation billed per image or second, and speech-to-speech, speech-to-text and text-to-speech endpoints
Batch API
Asynchronous processing with a discount on selected models, typically completed within 24 hours
Priority Processing
Higher scheduling priority for lower latency at a premium over standard token rates
Prompt caching
Cached prompt tokens are billed at a reduced rate

Pros & Cons

OpenAI

Advantages

Industry-leading model performance and accuracy
Extensive training data providing unmatched breadth across languages and domains
Developer-friendly SDKs for Python, JavaScript, and other languages
Comprehensive documentation and large community

Considerations

Higher cost compared to open-source alternatives
Token usage can scale quickly with conversation threads
Data privacy concerns for sensitive applications

xAI

Advantages

First-party access to Grok models
Cached-input rates published per model
Batch and priority tiers for cost or latency trade-offs
Also available through Google Cloud Vertex AI and Microsoft Foundry

Considerations

Only xAI's own models are offered
Long-context requests above the published prompt threshold are billed at a higher rate for the whole request
Server-side tool calls add per-invocation charges on top of tokens

Compute Services

OpenAI

xAI

Pricing Options

OpenAI

Pay-per-token

Charged based on tokens processed for both input and output

Batch API

50% discount for asynchronous batch processing

Prompt Caching

Discounts for recently seen input tokens

xAI

Per token

Input, cached input, and output tokens billed per 1M, with a higher long-context rate above a prompt-size threshold

Batch

Discounted asynchronous processing for selected models

Priority

A premium over standard rates for higher scheduling priority

Getting Started

OpenAI

Get Started

1
Create an account
Sign up at platform.openai.com
2
Generate API key
Create an API key in the dashboard and store it securely
3
Install SDK
Install the OpenAI SDK for Python, JavaScript, or your preferred language
4
Make your first call
Use the SDK to call OpenAI models for text generation or other tasks

xAI

Get Started

1
Create an account
Sign up on the xAI console and add credits
2
Create an API key
Generate a key in the console
3
Call the API
Send requests to api.x.ai with an OpenAI-compatible client or the xAI SDK

Support & Global Availability

OpenAI

Global Regions

Global availability with data residency options in US, Europe, UK, Canada, Japan, South Korea, Singapore, India, Australia, and UAE

Support

Documentation, Help Center, Developer Forum, email support, and enterprise support plans with dedicated account managers

xAI

Support

Documentation, status page, and console support