ChatGPT 4.5 is one of the most powerful AI models available in 2025. It’s faster, smarter, and more capable than older versions like GPT-3.5.
But here’s the catch:
To use GPT-4.5 directly on OpenAI’s ChatGPT website, you need a Plus subscription ($20/month).
So, what if you want to use it for free?
The good news is — you can!
Several trusted platforms give you free access to GPT-4.5 or its capabilities without needing a subscription.
In this guide, you’ll learn:
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What GPT-4.5 can do
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Where and how to use it for free
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A detailed comparison table of free platforms
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Tips to get the most out of it (even without paying)
Let’s get started
What Is ChatGPT 4.5 and Why It Matters
ChatGPT 4.5 is a turbocharged version of GPT-4. It’s faster, more reliable, and designed for multi-modal input (text, image, voice, files).
Here’s what makes GPT-4.5 special:
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Handles long conversations without forgetting context
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Supports image input and document uploads
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Works great for coding, writing, and data tasks
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More creative and less prone to errors than 3.5
But officially, it’s locked behind the ChatGPT Plus paywall.
That’s why so many users are searching:
“How to use GPT-4.5 for free in 2025?”
Keep reading. We’re breaking it down.
✅ Method 1: Use GPT-4.5 for Free via Microsoft Copilot (Bing Chat)
Website: https://copilot.microsoft.com
Microsoft Copilot is the easiest and most powerful way to use GPT-4.5 features completely free.
How to Use:
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Open copilot.microsoft.com in Edge or Chrome
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Sign in with a Microsoft account (free)
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Ask anything — it’s powered by GPT-4 turbo (same base as 4.5)
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Use voice input, images, or follow-up questions with no limit
⚡ Why It’s Great:
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No subscription needed
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Fast responses with updated info
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Includes image input + vision features
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Works on desktop and mobile browsers
Sample Prompt:
“Write a 500-word blog post in a casual tone about AI tools for YouTube creators.”
Limitations:
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File upload support is limited
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Works best in Microsoft Edge
✅ Method 2: Use ChatGPT 4.5 for Free via Poe.com (by Quora)
Website: https://poe.com
Poe lets you access AI bots like GPT-3.5, GPT-4, Claude, and more — all in one place.
How to Use:
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Visit poe.com
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Sign up with Google, Apple, or email
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Use bots labeled “ChatGPT”, “GPT-4”, or “Assistant”
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Ask questions, write content, or get summaries
⚡ Why It’s Great:
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Clean interface
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Free access to GPT-4 powered bots
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Great for writing, brainstorming, summarizing
Tips:
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Try the “Assistant” bot — often uses GPT-4-turbo
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Refresh daily for more free messages
Limitations:
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Daily message limit (10–15 queries)
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Some features require Poe+ (optional)
✅ Method 3: ChatGPT Mobile App (Free Tier + Explore GPTs)
Available On: Android & iOS
App Name: “ChatGPT” by OpenAI
How to Use:
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Download the ChatGPT app from Google Play or App Store
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Sign in with your OpenAI account
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Tap “Explore GPTs” to find custom bots
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Some free GPTs use GPT-4.5 on the backend
⚡ What You Get:
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Sometimes free access to GPT-4.5 features
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Can generate text, images (via DALL·E), and use voice input
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Clean, fast mobile experience
Limitations:
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GPT-4 usually needs ChatGPT Plus
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Custom GPTs may still be restricted to paid users
Platform Comparison: Best Free Ways to Access ChatGPT 4.5 (Part 1)
| Platform | GPT-4.5 Access | Supports Images | File Upload | Daily Limit | Cost |
|---|---|---|---|---|---|
| Microsoft Copilot | ✅ Yes | ✅ Yes | ❌ No | Unlimited | 100% Free |
| Poe.com | ✅ Limited | ❌ No | ❌ No | 10–15 uses | Free |
| ChatGPT App | ⚠️ Sometimes | ✅ Yes | ⚠️ Limited | Yes | Free Tier |
✅ Method 4: Try GPT-4.5 via You.com AI Chat
Website: https://you.com/chat
You.com is a search engine powered by AI. It includes chat support built with GPT-4 capabilities — available even for free users.
How to Use:
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Go to you.com/chat
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Type your query or command
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Select “Smart Mode” (uses GPT-4 features)
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Get responses in real-time
⚡ Why It’s Great:
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GPT-4 capabilities in search + chat
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Built-in summarizer, writing tool, and code helper
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No account needed for basic use
Limitations:
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Some advanced tools are Pro-only
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No file or image input yet
✅ Method 5: Use GPT-4.5 on Writesonic (Free Trial)
Website: https://writesonic.com
Writesonic offers AI writing tools using GPT-4.5 via API. They provide a free trial with enough credits to test it out.
How to Use:
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Create a free account at writesonic.com
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Choose “GPT-4” in the settings (default may be GPT-3.5)
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Use tools like AI Article Writer, Sonic Editor, or Chatsonic
⚡ Key Features:
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Content creation powered by GPT-4.5
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Templates for blogs, ads, landing pages, and social media
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Includes AI image generator, voice search, and real-time data
Limitations:
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Credit-based free trial
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Requires upgrade for longer content generation
✅ Method 6: Use GPT-4.5 in Perplexity.ai
Website: https://perplexity.ai
Perplexity is an AI-powered search engine that answers queries like a chatbot using powerful models like GPT-4-turbo.
How to Use:
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Go to perplexity.ai
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Type your question (e.g., “Summarize this research paper”)
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Select “Pro Search” to unlock GPT-4 turbo mode
⚡ Why It’s Great:
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Clean interface
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No login required for basic use
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Supports citations and sources
Limitations:
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No file uploads or image support
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Pro search is limited for free users
✅ Bonus: Use GPT-4.5 via Ora.ai
Website: https://ora.ai
Ora.ai lets you create or use AI chatbots powered by models like GPT-4.5.
How to Use:
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Visit ora.ai
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Use existing bots or create your own
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Choose GPT-4 if available
⚡ Why It’s Useful:
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Build your own custom AI chatbot
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Embed chatbots on websites
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Supports API integrations
Limitations:
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Some models are limited to Pro users
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Limited custom prompt memory for free tier
Free ChatGPT 4.5 Access Platforms – Comparison Table (Part 2)
| Platform | GPT-4.5 Access | Content Type | Best Use Case | Cost | Limits |
|---|---|---|---|---|---|
| You.com | ✅ Yes | Text only | Fast answers, summaries | Free | Some tool limits |
| Writesonic | ✅ Trial | Text, images | AI writing, marketing | Free trial | Credit-based |
| Perplexity.ai | ✅ Limited | Text | Academic answers, research | Free | Pro search cap |
| Ora.ai | ✅ Sometimes | Chatbots | Custom AI bot creation | Free | Pro-only options |
How to Confirm You’re Using GPT-4.5 (or GPT-4-Turbo)
Some tools don’t clearly label which model is running in the background. But here’s how you can tell:
Signs You’re Using GPT-4.5:
| Feature | GPT-3.5 | GPT-4.5 (Turbo) |
|---|---|---|
| Handles long conversations | ❌ Often forgets | ✅ Maintains context |
| Supports images | ❌ No | ✅ Yes (on supported tools) |
| Faster & more accurate | ❌ Slower, basic | ✅ Fast + nuanced answers |
| More creative writing | ⚠️ Sometimes | ✅ Consistently high-quality |
| Understands file data | ❌ Not supported | ✅ (Only on OpenAI Plus) |
Prompt Example to Ask:
“Which version of ChatGPT are you using right now?”
If the AI replies with GPT-4 turbo, GPT-4.5, or OpenAI API model, then you’re using the advanced model.
Smart Tips to Use ChatGPT 4.5 Like a Pro (For Free)
Here are expert tricks to make the most of free tools:
✅ Use Clear, Layered Prompts
Break down tasks into smaller steps.
Example:
“First, give me an outline. Then write the intro. Keep tone casual.”
✅ Save Prompts for Reuse
Use tools like Notion, Google Docs, or Prompt folders to keep:
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Prompts for content writing
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Coding helpers
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SEO outlines or ad copy generators
✅ Try Multi-Platform Workflows
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Use Copilot for quick research
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Use Writesonic for content
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Use Perplexity for citations
What You Can’t Do (in Free Versions)
Even the best free GPT-4.5 access tools have limits:
| Feature | Free Access | Notes |
|---|---|---|
| File Upload | ❌ Mostly No | Only in ChatGPT Plus |
| Custom GPTs | ❌ Limited | Requires OpenAI subscription |
| Unlimited Usage | ⚠️ Varies | Poe, Perplexity have daily caps |
| Access All APIs | ❌ No | Paid access needed for full use |
How to Use GPT-4.5 for Coding (Without Paying)
ChatGPT 4.5 isn’t just for chatting — it’s also a powerful coding assistant.
If you’re a developer, student, or beginner, you can use GPT-4.5 to:
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Debug code
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Generate scripts
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Learn programming concepts
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Build small apps and automation
Here’s how to do it without a subscription
✅ 1. Use Microsoft Copilot for Coding Tasks
Best For: Debugging, small code snippets, explaining code
Prompt Example:
“Fix this Python code and explain what it does: [Paste your code]”
Pro Tip: Ask Copilot to compare different coding methods or optimize a block of code.
✅ 2. Use GPT-4.5 on Cursor.sh (Free Plan Available)
Website: https://www.cursor.sh
Cursor is a GPT-4-powered code editor, perfect for developers.
Features:
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VS Code-like interface
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Built-in GPT-4 assistant
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Bug fixing, commenting, and refactoring tools
Limitations: You need to verify your email. Free plan gives limited monthly usage of GPT-4.
✅ 3. Try Codeium (GPT-Powered)
Website: https://codeium.com
Codeium is a GPT-like autocomplete tool that integrates with many IDEs like VS Code, JetBrains, and more.
Key Features:
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GPT-style coding suggestions
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Free for personal use
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Works offline and online
Bonus: Supports over 70+ programming languages!
How to Use ChatGPT 4.5 for Content Creation (Free Tools)
Whether you’re a blogger, YouTuber, student, or freelancer, GPT-4.5 can help you create high-quality content in less time.
Here are the best ways to use it for free:
✅ 1. Use Writesonic for Articles and SEO
Writesonic uses GPT-4.5 (API) to generate:
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Blog posts
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Social media ads
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Product descriptions
You get 10K words/month free on trial.
Prompt Example:
“Write a 1000-word blog post about AI in education in 2025 with an SEO-friendly structure.”
✅ 2. Use You.com for AI Writing
YouWrite (part of You.com) helps you write:
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Emails
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Articles
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Social media captions
All generated using GPT-4-based chat. No signup needed.
✅ 3. Use Microsoft Copilot for Quick Writing Tasks
Great for:
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Writing outlines
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Editing drafts
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Rewriting in different tones
Example Prompt:
“Make this sentence more professional: ‘I want to work here because it’s cool.’”
Use GPT-4.5 for Learning and Studying (Free Tools for Students)
AI is revolutionizing education. You can now study smarter using GPT-4.5 — even without paying.
Here’s how
✅ 1. Use Perplexity.ai for Research
Ask complex questions, and it replies with short answers and real-time citations.
Use Case:
“Summarize the key points of the latest AI in education research paper from 2025.”
Bonus: Use “Pro Search” to access GPT-4-level answers.
✅ 2. Use ChatGPT App (Free GPTs) for Study Help
Inside the ChatGPT app (free version), explore GPTs for students, like:
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Essay helpers
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Homework tutors
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Math solvers
Some of them use GPT-4.5 for better explanations.
✅ 3. Try SciSpace (AI for Academics)
Website: https://scispace.com
Best For:
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Explaining scientific papers
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Breaking down formulas
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AI-powered summaries
Free version gives GPT-powered insights into academic papers.
GPT-4.5 Free Use: Tools by Use Case
| Use Case | Tool/Platform | GPT-4.5 Access | Notes |
|---|---|---|---|
| Coding | Copilot, Cursor.sh | ✅ Yes | Debug, explain, generate code |
| Blogging/SEO | Writesonic, You.com | ✅ Trial/Free | Article generation, copywriting |
| Studying/Research | Perplexity, SciSpace | ✅ Partial | Summary, citation, AI tutoring |
Smart Prompting Tips (Free Users)
Using free tools doesn’t mean low quality. If you use smart prompts, you can get premium-level answers.
Here’s how to write prompts that unlock GPT-4.5’s full potential:
Prompt Templates:
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“Act as a [role] and [task]”
Example: “Act as a YouTube Shorts expert and write 5 viral hook ideas.” -
“Explain like I’m 10 years old”
Useful for: Math, science, technical concepts -
“Give me bullet points only”
Best for: Summarization and productivity -
“Give me pros and cons with table format”
Boosts clarity and structure -
“First write an outline, then write section by section”
Great for blog and essay generation
Final Summary: Use GPT-4.5 for Free (Yes, It’s Possible!)
You don’t need a ChatGPT Plus subscription to access the power of GPT-4.5 in 2025.
Thanks to integrations with Microsoft, You.com, Poe, and others, you can now:
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Chat, write, and code
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Summarize and research
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Create content and study smarter
All using GPT-4.5 or turbo-level models, completely free.
Even without file uploads or custom GPTs, these tools are more than enough for 90% of users.
️ Ultimate Comparison Table: GPT-4.5 Free Access (All Tools)
| Platform | GPT-4.5 Access | Best For | File Support | Image Input | Daily Limit | Free? |
|---|---|---|---|---|---|---|
| Copilot (Microsoft) | ✅ Yes | Writing, Coding, Research | ❌ No | ✅ Yes | Unlimited | ✅ 100% |
| Poe (Quora) | ✅ Limited | Q&A, Chat, Summarizing | ❌ No | ❌ No | 10–15 msgs | ✅ Free |
| ChatGPT App (OpenAI) | ⚠️ Sometimes | GPTs, Voice, Images | ⚠️ Limited | ✅ Yes | Limited | ✅ Free |
| You.com | ✅ Yes | Search + Content Writing | ❌ No | ✅ Yes | Unlimited | ✅ Free |
| Writesonic | ✅ Trial | Blog writing, SEO tools | ❌ No | ✅ Yes | Credit-based | ✅ Free trial |
| Perplexity.ai | ✅ Limited | Research, Study Help | ❌ No | ❌ No | Pro cap | ✅ Free |
| Cursor.sh | ✅ Trial | Code writing/debugging | ✅ Yes | ❌ No | Usage limit | ✅ Free tier |
| Codeium | ✅ Yes | Auto-complete coding | ❌ No | ❌ No | Unlimited | ✅ Free |
| Ora.ai | ✅ Partial | Create custom GPT bots | ❌ No | ❌ No | Variable | ✅ Free |
| SciSpace | ✅ Partial | Scientific paper summaries | ❌ No | ❌ No | Unlimited | ✅ Free |
FAQ: ChatGPT 4.5 Free Access in 2025
❓Q1: Can I really use GPT-4.5 without paying?
Yes, many platforms now integrate GPT-4.5 or GPT-4 turbo features for free — including Microsoft Copilot, Poe.com, You.com, and Writesonic’s trial version.
❓Q2: Is GPT-4.5 better than GPT-3.5?
Absolutely. GPT-4.5:
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Understands long prompts better
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Maintains context longer
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Can process images
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Gives more creative and factual answers
❓Q3: How do I know if I’m using GPT-4.5?
Ask it:
“Which model are you based on?”
Or check performance: If it understands long context and handles images, it’s likely GPT-4.5 or GPT-4 turbo.
❓Q4: What are the best free platforms right now?
Here’s the ranking for 2025:
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Microsoft Copilot (best overall)
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Poe.com (great interface + variety)
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You.com (search + writing assistant)
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Writesonic (writing tools with trial)
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Cursor.sh (coding with GPT-4)
❓Q5: Can I upload files or images with the free version?
In most tools — no. File upload is limited to ChatGPT Plus on OpenAI’s site.
But you can paste text or images directly in Copilot and still get great results.
Final Tips Before You Go
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Bookmark Copilot, Poe, and You.com
They’re the easiest ways to use GPT-4.5 right now. -
Use structured prompts
Clear prompts = better answers. -
Test across platforms
Use Copilot for code, You.com for content, and Perplexity for research. -
Don’t fall for scams
Never download unknown “GPT-4.5 APKs” or apps — they could steal your data.
Conclusion
ChatGPT 4.5 is powerful — and with the right tools, you can enjoy it 100% free.
Whether you’re a content creator, developer, student, or just curious, this guide showed you how to:
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Access GPT-4.5 across multiple platforms
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Use it for writing, coding, and research
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Avoid the paywall and still get top results
Now go ahead and try it — and share this guide with someone who needs it!