April 8, 2025

ChatGPT March 2025 Update: GPT-4o, Sora, Images

Article content

1. What’s New in ChatGPT: Game-Changing Update

GPT-4o Is Now the Default
Next-Gen Image Generation
Image Editing with Prompts
Background Removal
Built-in Video Generation via Sora
Advanced Voice Mode

2. GPT-4o vs GPT-4: What’s the Difference?

3. What’s Next: GPT-5 Is Coming

4. GPT-4 vs GPT-4o: Feature Comparison

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Big news from OpenAI: ChatGPT just leveled up — in a huge way.

With the March 2025 update, the team rolled out GPT-4o, its most advanced and accessible model yet. This release brings native image editing, a powerful new image generator, and even video creation via Sora, directly inside ChatGPT.

If you’re building, designing, writing, or simply keeping up with the evolving AI landscape — here’s everything you need to know about this release, what it unlocks, and how it sets the stage for GPT-5.

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What’s New in ChatGPT: Game-Changing Update

The March 2025 OpenAI update brought a number of new features to ChatGPT, making the model more powerful, creative, and practical than ever before.

Test the updates — Download Sigma AI Browser

Here is a list of the most important features that you can start using today:

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GPT-4o Is Now the Default

Welcome screen for GPT-4 o, Openais new multimodal AI model with support for text, image, and audio. — GPT-4o becomes the default model in ChatGPT

ChatGPT now runs on GPT-4o ("o" for omni) — a multimodal model that understands text, images, and audio with higher speed and accuracy.

Lightning-fast responses with improved accuracy
Enhanced reasoning and STEM capabilities
Access to knowledge up to mid-2024
Supports text, image, and audio inputs (with more coming)

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Next-Gen Image Generation

Examples of GPT-4o image generation showcasing realism, human subjects, text accuracy, and stylistic consistency. — GPT-4o’s new image model creates realistic, coherent visuals

Forget the limitations of DALL·E. The new image model in GPT-4 o delivers visually accurate, prompt-responsive visuals, including clean typography.

Visually coherent compositions that follow prompt intent
Clean, readable typography — accurate display of the inscription in harmony with the image
Consistent style and color palettes, even across complex prompts
Fewer distortions, better symmetry, and real design logic

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Image Editing with Prompts

You can create images inside GPT-4o by typing prompts

GPT-4o also includes true image editing capabilities in the chat window.

Upload an image and type something like: “Add sunset lighting”, “Replace the coffee cup with a wine glass”.

ChatGPT executes the edit instantly.

Think of it as a text-based Photoshop, powered by AI — intuitive, fast and suitable for those who do not have design knowledge.

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Background Removal

Need a clean PNG with no background?

GPT-4o now supports automatic background removal, delivering ready-to-use transparent images in seconds — ideal for e-commerce, slides, or social assets.

This is AI-powered design without the learning curve.

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Built-in Video Generation via Sora

Sora video generation examples in ChatGPT featuring surreal scenes, wildlife, and cinematic visuals, generated from short prompts. — Sora lets you turn prompts into videos directly inside ChatGPT

The most exciting new feature: you can now generate videos directly inside ChatGPT using OpenAI’s Sora model.

Create up to 3 videos per day (Charge Plus & Pro).
Based on short text descriptions
No need to leave the app — video generation is fully integrated

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Advanced Voice Mode

Advanced Voice Mode brings expressive, real-time conversation to ChatGPT

ChatGPT can now talk to you in real time with natural, emotionally expressive speech.

The new Advanced Voice Mode brings near-human conversation quality:
Real-time voice interaction, no delays or robotic pauses
Emotional tone and inflection that adapts to your intent
Reacts to your words, tone, and even subtle pauses
Feels like talking to a real, expressive assistant

Download Sigma AI Browser with ChatGPT integration into your browser for a smoother workflow

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GPT-4o vs GPT-4: What’s the Difference?

Speed & Efficiency
GPT-4o is significantly faster than GPT-4, with reduced latency and smoother real-time interaction.

Multimodality
GPT-4 could process text and some images (in limited cases), GPT-4o is fully multimodal by design.

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What’s Next: GPT-5 Is Coming

OpenAI has confirmed that GPT-5 is in development, with a target release in late May 2025.

Expected improvements include:

Unified reasoning architecture (based on o-series and GPT)
Deeper understanding and context retention
Native support for web search, real-time data, voice & collaboration tools
More advanced multi-agent behavior

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GPT-4 vs GPT-4o: Feature Comparison

Feature	GPT-4	GPT-4o (March 2025)
Model Type	Text-based	Fully multimodal (text, image, audio)
Speed & Response Time	Moderate	Much faster, low-latency responses
Image Generation	Limited (via DALL·E)	Native, high-quality, text-aware generation
Image Editing	Not supported	Edit images via text prompts
Background Removal	No	Built-in, export as PNG
Voice Interaction	Basic (slow, limited voices)	Advanced Voice Mode (expressive, real-time)
Video Generation	Not available	Sora integration (video from text)
Reasoning & Context Handling	Strong	Comparable, with real-time adaptation
Knowledge Cutoff	April 2023	Mid-2024
Access	Plus / Pro only	Free for all users

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Conclusion

The March 2025 update it’s a clear signal that ChatGPT is evolving from a chatbot into a creative and collaborative AI platform.

These updates are especially valuable for:

Designers who need fast visual concepts or clean edits
Marketers creating campaign assets and branded content
Content creators building visuals, videos, and scripts
Developers prototyping, generating, or testing ideas

If you haven’t explored ChatGPT in a while, now is the time. Download Sigma AI Browser and start using ChatGPT-4o with no limits!