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Side-by-side comparison · AI Assistants & LLMs

Claude vs GPT-6 Astra vs Grok

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Best overall

Claude

4.6

From $20/mo

GPT-6 Astra

3.8

From $20/mo

Grok

3.7

From $8/mo

Comparing 3 tools, the maximum.

At a glance

Claude

4.6
Best overallBest valueEasiest to use

Pick it if: Anyone who writes, researches or makes decisions for a living, plus anyone curious about Claude Code.

GPT-6 Astra

3.8

Pick it if: Power users and editors who want an AI that can operate their software for them.

Grok

3.7

Pick it if: People who follow news, trends or public sentiment closely and want an assistant hooked into X.

Overview

AttributeClaudeGPT-6 AstraGrok
In one lineAnthropic's chat assistant, at its best on careful writing and long documents.OpenAI's top model, built to work your computer for you across long, multi-step jobs.Elon Musk's AI assistant, plugged into what people are posting on X right now.
Pricing modelFreemiumPaidFreemium
Starting price$20/mo$20/mo$8/mo
Free plan Yes No Yes
Works with Claude Code Yes No No

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeClaudeGPT-6 AstraGrok
Overall rating4.6Winner3.83.7
Ease of useHow quickly someone non-technical gets value from it.
4.5
3.0
4.0
FeaturesHow much it can do, and how well the pieces fit together.
4.5
4.5
4.0
Output qualityHow good the results are before you fix them.
5.0
5.0
3.5
Value for moneyWhat you get for the price, including the free plan.
4.5
3.0
3.0
Speed & reliabilityHow fast it is and how often it falls over.
4.5
3.5
4.0

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeClaudeGPT-6 AstraGrok
Access & platform
Free plan Yes No Yes
Mobile app Yes Yes Yes
Desktop app Yes Yes No
Browser extension Yes Yes No
API access Yes Yes Yes
Teams & business
Team workspace Yes Yes Yes
Enterprise plan or SSO Yes Yes Yes
Connects to other apps Yes Yes No
Open source or self-hosted No No No
AI abilities
Works with your files Yes Yes Yes
Understands images Yes Yes Yes
Makes images No Yes Yes
Makes video No No Yes
Writes code Yes Yes Yes
Runs agents or automations Yes Yes Yes
Learns your brand or style Yes Yes No
Works in many languages Yes Yes Yes
Capabilities score14/ 1714/ 1712/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeClaudeGPT-6 AstraGrok
Plans

Free

Free

Trying it out and light daily use.

ChatGPT Plus

$20/mo

Trying Astra in Codex and ChatGPT Work.

Free

Free

Trying it and occasional questions.

ProOur pick

$20/mo, or $17/mo billed yearly

Anyone who uses it most days.

ChatGPT ProOur pick

From $100/mo

People who want Astra and Astra Pro everywhere.

Plus

$8/mo

X users who want a bit of Grok on the side.

Max

From $100/mo

Heavy users and people living in Claude Code.

ChatGPT Business

See website

Teams that want Astra Pro with admin controls.

PremiumOur pick

$30/mo

Anyone who uses Grok most days.

Team

From $20/seat/mo billed yearly

Businesses with 2 to 150 people.

API

$10 per million input tokens, $50 per million output

Developers building Astra into their own software.

Super

$100/mo

Heavy users who want priority at busy times.

Ultra

$200/mo

Power users running agents all day.

Teams

From $30/user/mo

Businesses that want pooled usage and admin controls.

Which plan to pickStart on Free to see if the writing suits you. Most people who stick with it move to Pro within a month; only go to Max if you hit the Pro limits every day or you're running Claude Code for hours at a time.Don't buy a plan for Astra alone. If you're on Plus, try it in Codex first. Move to Pro only if you've got real computer-use or long agent jobs for it, and start on the $100 tier. For most writing and research, GPT-6.1 Sol or the standard models are faster and good enough.If you already pay for X Premium, you now get Grok in the same subscription, so start there. Premium at $30 is the real Grok plan. The $100 and $200 tiers are only worth it if you're generating video or running agents constantly.

Key features

AttributeClaudeGPT-6 AstraGrok
Standout features
  • Projects
  • Artifacts
  • Long documents
  • Web search and connectors
  • Claude Code
  • Memory
  • Computer use
  • Long multi-step jobs
  • Astra Pro
  • Codex
  • API access
  • Live X search
  • Imagine
  • Voice mode
  • Grok Bot
  • Grok Build and Cursor
  • Built into X

Pros and cons

AttributeClaudeGPT-6 AstraGrok
Pros
  • Writing sounds like a person and needs the least editing of any assistant
  • Handles long documents and messy briefs without losing track
  • Projects and memory mean you stop repeating the same context
  • Artifacts turn answers into real documents, slides and small apps
  • One subscription covers Claude Code as well
  • The strongest computer-use and agent model available
  • Works through long jobs without hand-holding
  • Included in paid ChatGPT plans rather than sold separately
  • Best coding results of any OpenAI model to date
  • Live access to X posts that no other assistant has
  • Fast image and video generation
  • Personality and a willingness to give an opinion
  • One subscription now covers Grok, X Premium and coding tools
  • Capable voice mode
Cons
  • Free and Pro usage limits can bite on a busy day
  • No video generation, and image generation is basic next to ChatGPT
  • Fewer third-party connectors and plugins than ChatGPT
  • Only on paid plans, and full access needs Pro from $100 a month
  • Slower and far more expensive per token than the standard models
  • Already overtaken for most tasks by the cheaper GPT-6.1 Sol
  • Computer use is still fiddly and results depend heavily on your setup
  • Rollout and plan access keep changing, so what you get varies week to week
  • Tone and looser guardrails make it risky for client-facing work
  • High-usage tiers are expensive and plan names keep changing
  • Strong opinions and a bias toward X as a source can skew answers
  • Fewer business integrations than ChatGPT or Gemini
  • Repeated controversies around content and moderation

Who each one is for

AttributeClaudeGPT-6 AstraGrok
Best for
  • Long-form writing and editing
  • Reading and summarising long documents
  • Thinking through a plan or decision
  • Pairing with Claude Code
  • Driving editing software from instructions
  • Long research and build tasks
  • Computer-use automation
  • Coding through Codex
  • Tracking what's trending right now
  • Gauging how people are reacting to news
  • Casual, chatty answers
  • Image and short video generation
You'll find it used by
  • Writers and marketers
  • Founders
  • Consultants
  • Developers
  • Power users
  • Video editors
  • Developers
  • Analysts
  • Social media managers
  • Journalists
  • Traders
  • X power users

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability. The "Visit" buttons may use affiliate links, which never affect a score.

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