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OpenAI launches GPT-5, „our smartest, fastest, most useful model yet”

8 august 2025

OpenAI is introducing GPT‑5, „our best AI system yet”. „The launch of GPT‑5 also coincides with nearly 700 million people using ChatGPT weekly.” – according to a press release.

The company said that „GPT‑5 is a significant leap in intelligence over all our previous models, featuring state-of-the-art performance across coding, math, writing, health, visual perception, and more. It is a unified system that knows when to respond quickly and when to think longer to provide expert-level responses.”


GPT‑5 is available to all users, with Plus subscribers getting more usage, and Pro subscribers getting access to GPT‑5 pro, a version with extended reasoning for even more comprehensive and accurate answers.

One unified system
According to the company, GPT‑5 is a unified system with a smart, efficient model that answers most questions, a deeper reasoning model (GPT‑5 thinking) for harder problems, and a real‑time router that quickly decides which to use based on conversation type, complexity, tool needs, and your explicit intent (for example, if you say “think hard about this” in the prompt).

The router is continuously trained on real signals, including when users switch models, preference rates for responses, and measured correctness, improving over time. „Once usage limits are reached, a mini version of each model handles remaining queries. In the near future, we plan to integrate these capabilities into a single model.” – OpenAI said.

A smarter, more widely useful model
GPT‑5 not only outperforms previous models on benchmarks and answers questions more quickly, but—most importantly—is more useful for real-world queries. „We’ve made significant advances in reducing hallucinations, improving instruction following, and minimizing sycophancy, while leveling up GPT‑5’s performance in three of ChatGPT’s most common uses: writing, coding, and health.” – the company explained.

OpenAI says that GPT‑5 delivers leaps in accuracy, speed, reasoning, context recognition, structured thinking, and problem-solving. The true magic will happen when businesses start applying GPT‑5 to imagine new use cases. Here’s the early feedback:

Amgen fights the world’s toughest diseases by bringing together the best of biology and technology. We hold AI to the highest bar for scientific accuracy and quality. It’s still early, but based on our internal evaluation, GPT-5 has met that bar and is doing a better job navigating ambiguity where context matters. We are seeing promising early results from deploying GPT-5 across workflows at Amgen including increased accuracy and reliability, higher quality outputs and faster speeds compared to prior models.” – said Sean Bruich, Senior Vice President of AI & Data at Amgen

Availability and access

GPT‑5 is starting to roll out today to all Plus, Pro, Team, and Free users, with access for Enterprise and Edu coming in one week. Pro, Plus, and Team users can also start coding with GPT‑5 in the Codex CLI⁠(opens in a new window) by signing in with ChatGPT.

As with GPT‑4o, the difference between free and paid access to GPT‑5 is usage volume.

More details here

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