GPT-5 : Everything You Should Know About OpenAI’s New Model

GPT-5 is now officially here. It is one of the most significant AI model releases since GPT-4.1. OpenAI has rolled it out across ChatGPT and API, replacing earlier models including GPT-4.5 and the o-series reasoning models.

If you are wondering what GPT-5 can actually do, how it compares to GPT-4.1, and what the new pricing looks like, this blog has the complete update.

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What is GPT-5?

GPT-5 is the upcoming large language model from OpenAI and the direct successor to GPT-4.1, O series and GPT-4o. which focused on multimodal inputs and real-time conversations.

It merges advanced reasoning capabilities from the o-series with full multimodal support, creating a single adaptive system that handles:

• Built-in advanced reasoning with higher accuracy and fewer hallucinations than GPT-4.1 & o3
  
• Long-context processing with over 1 million tokens
  
• Multimodal interaction including text, image, and audio with early video support in testing
  
• Autonomous agent behaviour with built-in tool execution and step-by-step task handling

Release Date: 7 August 2025

Notable Change: Unified model replacing multiple specialised variants

Notable Milestone: Will launch alongside an open-source foundation model, a first from OpenAI at this level.

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Confirmed GPT-5 Features: What We Know So Far

While OpenAI hasn’t published all specs, several core features have been confirmed or strongly hinted:

Feature	GPT-5 (Expected)
Context Window	1M+ tokens
Modality Support	Text, Image, Audio (native)
Memory	Persistent, built-in
Tool Use	Native agent execution
Open Source	Smaller companion model
Reasoning	More accurate, fewer hallucinations
Speed	Likely be Slower
Access	Expected for enterprise, API and ChatGPT Plus-Pro users

Will GPT-5 Be Open Source?

No — GPT-5 will not be open source. But a Separate Open-Source Model Is also expected to release.

OpenAI has made it clear: GPT-5 will remain a proprietary, closed-source model, available via API or within ChatGPT for paid users.

However, OpenAI is also planning to release a separate open-source model around the same time as GPT-5. Here’s what we know:

• It will be a smaller model, not GPT-5 or its fine-tuned variant
  
• Designed to support academic research, transparency, and community-driven projects
  
• Likely comparable to models like Claude, Gemini, or DeepSeek
  
• Intended to reduce OpenAI’s regulatory pressure and enable safer open experimentation

So while GPT-5 remains closed, developers and researchers will still get a new open-source foundation model from OpenAI in 2025.

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GPT-5 vs GPT-4.1: Key Differences Compared Side-by-Side

Feature	GPT-4.1	GPT-5
Release Date	April 2025	Summer 2025
Context Length	Up to 1M tokens	1M+ tokens
Modalities	Text, Image	Text, Image, Audio (native)
Accuracy	Improved from GPT-4o	Smarter and better than any OAI model
Memory	Not persistent	Persistent memory included
Tool Use	Function Calling	Built-in agent behavior
Variants	Mini, Nano, Standard	Full model + Open Source version
Coding Benchmark (SWE-bench)	54.6%	Expected to exceed
Pricing	$2 input / $8 output per million tokens	TBD

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What Makes GPT-5 Different?

The main improvements aren’t just technical — they’re strategic:

• Context-aware planning: GPT-5 can act more like an agent that can think for advanced cases before responding just like anthropic claude.
  
• Real-world task execution: With built-in tool use, it can automate steps instead of just suggesting them.
  
• Memory: It can now remember users and sessions — opening up true personalization in workflows.
  
• Multimodal inputs (with native audio): Makes it easier to integrate GPT-5 into voice-based systems or assistants.

This makes GPT-5 more than just a chat model.

Suggested Reading

• OpenAI GPT 4.1 vs Claude 3.7 vs Gemini 2.5: Which Is Best AI?
  
• The Best AI Agent Builders of 2025 (Top Picks)
  
• What Are AI Voice Agents & How They Work?
  
• Prompt Chaining vs Chain of Thoughts Prompting

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FAQ

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When is GPT-5 releasing? ▼

GPT-5 is expected to launch in Summer 2025, though OpenAI has not announced an official release date.

Will GPT-5 be open source? ▼

No. GPT-5 itself will remain closed-source. However, OpenAI will release a separate open-source model for research and experimentation.

What are the confirmed features of GPT-5? ▼

GPT-5 will include:
• 1M+ token context window
• Native audio support
• Built-in memory
• Autonomous agent execution
• Better accuracy with fewer hallucinations

How is GPT-5 different from GPT-4.1? ▼

GPT-5 brings:
• Persistent memory
• Native audio processing
• Smarter tool usage with agent behavior
• Likely stronger performance in coding and reasoning tasks

Who can access GPT-5? ▼

GPT-5 is expected to be accessible via ChatGPT Plus, OpenAI API, and enterprise platforms—similar to earlier models.

What is the open-source model OpenAI is releasing? ▼

It’s a separate, smaller model launching alongside GPT-5. It’s built for public research and experimentation—not a variant of GPT-5 itself.

Is GPT-5 better for coding? ▼

While official benchmarks aren’t yet released, GPT-5 is expected to exceed GPT-4.1 on coding tasks such as SWE-bench.

Conclusion

GPT-5 will be a major leap in OpenAI’s product line — not just because of its size or speed, but because of its agentic capabilities, and planned integration with tools.

Whether you are a developer, founder, researcher, or just curious about AI — GPT-5 is the model to watch in 2025.

And for those looking to experiment? The accompanying open-source release will finally give the community a strong base model from OpenAI to work with — something we haven’t seen before.