Your AI Stack Just Got Rewritten by GPT5

4 min read.

Author

Midas AI
August 08, 2025

OpenAI has officially launched GPT5 across its entire product suite. The company describes it as the smartest, fastest, and most useful model it has ever created. More than 700 million people now use ChatGPT weekly, and for the first time, access to GPT5 is free at the basic level.

There are paid options for heavier usage, but anyone can try the new model without a subscription. GPT5 is more accurate than previous versions, less likely to generate incorrect information, and significantly better at writing and coding. CEO Sam Altman said the model has intelligence on the level of a PhD, with coding on demand as its core strength.

The company also highlighted health support features, though it made clear that GPT5 is not a replacement for medical professionals. The tone of the model has changed as well. It now responds with more precision and uses fewer unnecessary emojis or overenthusiastic language.

Nick Turley, head of product at ChatGPT, described free access as essential to OpenAI's goal of making AI serve the public good.

From App to Infrastructure

GPT5 is not arriving as a single app. It is being positioned as a foundation built into the systems people already use. Free users get access to GPT5 and GPT5 Mini. When usage limits are reached, they are automatically routed to the lighter version. The Plus plan increases those limits. Pro users receive unlimited GPT5 and can use GPT5 Pro for more advanced needs. Business and education plans make GPT5 the standard for everyday work.

OpenAI introduced a feature called test time compute, which allows the model to dedicate more power to difficult questions. This unlocks advanced reasoning for the public for the first time. The company also demonstrated GPT5 building another language model in under five minutes. A new capability called vibe coding allows users to generate software through natural language prompts, pushing the idea of software on demand into reality.

Microsoft Builds GPT5 into Copilot and Azure

Microsoft has rapidly integrated GPT5 into its full range of products. Copilot now includes Smart Mode, which uses GPT5 by default. It is available for free through the web and across Windows, macOS, Android, and iOS.

Microsoft 365 Copilot now handles more complex queries, works better in longer conversations, and better understands user context across emails, documents, and files. GitHub Copilot also receives an upgrade. GPT5 is now available in all paid plans and works inside GitHub, Visual Studio Code, and GitHub Mobile. Teams can also use Copilot Studio to build custom workflows powered by GPT5.

Azure AI Foundry includes a model router that selects the right GPT5 version depending on task complexity, performance requirements, and cost. The models come with security, compliance, and privacy features suitable for large organizations.

Different Versions of GPT5 for Different Needs

Microsoft has launched the full GPT5 family. The reasoning model supports deep thinking and long context with up to 272,000 tokens. GPT5 Mini is designed for real time use. GPT5 Nano provides very low latency. GPT5 Chat is built for multimodal conversations with 128,000 tokens of context.

New agent features allow the model to take multiple steps toward a goal and explain its reasoning in ways that can be reviewed and audited. Developers now have access to controls that adjust the model's effort and verbosity. Tools can be called without following rigid formats or schemas.

Azure AI Content Safety provides safeguards on both inputs and outputs. Prompt shields can detect and block malicious instructions. Integration with Microsoft Defender and Purview enables oversight, compliance, and reporting. Real time monitoring of safety, fairness, and performance is built into Azure Monitor and Application Insights. A new Foundry Agent Service is also coming. This will combine GPT5 with browser automation and connect with external tools and protocols.

GitHub Copilot in Visual Studio Code now supports autonomous coding agents. It allows over 128 tools to be used in a single conversation, includes checkpoints to restore previous workspace states, and improves performance for terminal based development.

Focus on Accuracy and Cost Savings

OpenAI reports that GPT5 is about 45 percent less likely to produce incorrect facts compared to GPT4o, and 80 percent better than the earlier o3 model. Microsoft’s internal safety tests also showed strong results. The reasoning model ranked among the safest in avoiding harmful outputs like malware and fraud generation.

Azure's model routing system claims up to 60 percent savings on inference costs while maintaining output quality. These routing decisions are automatic and do not require developers to choose the model themselves.

Reviewers told Reuters that the improvement from GPT4 to GPT5 is smaller than previous leaps. However, they were impressed by the model’s abilities in math, science, and especially software development. Altman also confirmed that GPT5 does not learn from user interactions, emphasizing the current limits of the technology.

GPT5 Is the New Foundation

GPT5 is not just an update to a chatbot. It is being built into the tools that people and businesses already use. With broad free access for consumers and deep integrations within Microsoft’s ecosystem, GPT5 is no longer an optional feature.