OpenAI has officially rolled out GPT-5, the most advanced version of its language model yet — and the biggest surprise? It’s now available for free to all ChatGPT users.

Unveiled during a packed livestream by CEO Sam Altman, GPT-5 represents a major leap in AI capabilities, with improved reasoning, lower hallucination rates, better memory, real-world integrations, and deeper personalization.

This launch moves ChatGPT closer to becoming not just a chatbot, but a real digital assistant that adapts to your style, handles tasks, and understands context like never before.

GPT-5: More than just faster or bigger

While GPT-4 was powerful, GPT-5 brings a whole new dimension: "agent-like" reasoning. It doesn’t just answer questions — it interprets, evaluates, and performs actions on your behalf.

Smarter reasoning and fewer mistakes

GPT-5 breaks down complex, layered prompts into manageable parts, processes them in parallel, and offers context-aware responses — often in a single try. It’s also more honest: when it doesn’t know, it tells you — reducing the risk of hallucinations or false confidence.

Hallucination rates (errors):

GPT-5 Thinking: 4.8%
GPT-4o: 20.6%
o3: 22%

It’s also much more proactive when discussing healthcare topics, flagging concerns or results without overstepping its bounds. On HealthBench, GPT-5 hallucinated just 1.6% of the time, a massive improvement.

New features powered by GPT-5

With GPT-5 now live in ChatGPT, users get access to several upgrades designed for both productivity and personality.

Vibe coding: Describe a feeling, get working code

A favorite among developers: GPT-5 excels at “vibe coding” — where you describe the mood or experience of a digital product, and it delivers fully functional HTML, CSS, and JavaScript.

This isn’t just about syntax. It interprets intent and design logic, making it possible to go from an idea to code in seconds.

It also tops performance charts:

SWE-bench Verified:
- GPT-5: 74.9%
- Claude Opus 4.1: 74.5%
- Gemini 2.5 Pro: 59.6%

Multi-size access for all users

GPT-5 is now offered in three sizes:

gpt-5 (full model)
gpt-5-mini
gpt-5-nano (API only)

Free users start with the main GPT-5 model, and drop to mini only after hitting usage limits. Pro users ($200/mo) get unlimited access, plus exclusive access to GPT-5 Pro and GPT-5 Thinking, which deliver slower but deeper, tool-assisted answers.

ChatGPT gets real personalities and voices

Choose a chatbot that sounds like you

You can now give ChatGPT a tone and attitude that matches your preferences. Available “personalities” include:

Cynic: sarcastic, witty, dry humor
Listener: empathetic, echoing, gentle
Nerd: trivia-rich, curious, fact-focused
Robot: objective, emotionless, task-oriented

These flavors don’t compromise the quality of answers, but shape the tone — for example, productivity tips may sound snarky with Cynic, or softly encouraging with Listener.

Voice mode gets a serious upgrade

The new Voice Mode now features near-human fluidity and can adapt tone, pacing, and inflection based on your request — from calming and warm to fast and focused.

OpenAI Voice Demo

Plus subscribers get nearly unlimited voice responses
Free users get a few hours per day
The old “Standard Voice Mode” will be phased out in 30 days

And yes — custom GPTs now speak with your selected voice settings, too.

GPT-5 connects with your Google life

A huge productivity booster: ChatGPT Pro users can now link Gmail, Google Calendar, and Contacts. That means ChatGPT can:

Schedule meetings
Draft emails based on past threads
Check your availability automatically
Find and pull contact details
Suggest next steps from ongoing email convos

All without you having to prompt it explicitly.

⚠️ OpenAI promises minimal data access — only what’s necessary, only when it’s helpful.

GPT-5 vs competition: How does it stack up?

GPT-5 is now leading or competitive in most benchmark tests:

Benchmark	GPT-5 Score	Competitor
GPQA Diamond (PhD-level science)	89.4%	Claude Opus 4.1 (80.9%)
SWE-bench Verified (code)	74.9%	Claude Opus 4.1 (74.5%)
Humanity’s Last Exam (tools mode)	42%	xAI Grok 4 Heavy (44.4%)

Although GPT-5 slightly underperformed on some agentic tasks (like airline navigation), it outperforms in key real-world coding and knowledge areas.

Safety and honesty at the core

OpenAI’s Safety Lead, Alex Beutel, shared that GPT-5 is significantly better at:

Detecting bad-faith prompts
Avoiding manipulative behavior
Staying transparent when uncertain
Balancing helpfulness with caution

This leads to fewer unsafe outputs, more relevant refusals, and a more trustworthy AI experience for users.

What free users get today

OpenAI is now giving free users access to:

✅ GPT-5 as the default model

✅ All core capabilities (writing, reasoning, coding)

✅ New personalities

✅ Limited Voice Mode access

✅ Auto model routing (ChatGPT picks the best model based on context)

That means everyday users get real value — not a stripped-down teaser.

Developers: Pricing and control

GPT-5 is also live in OpenAI’s developer API in 3 sizes:

Model	Input Price	Output Price
gpt-5	$1.25 / million tokens	$10 / million tokens

Developers can also control response verbosity, letting them set how detailed GPT-5’s replies should be.

With GPT-5, OpenAI is bridging the gap between chatbots and intelligent agents. It writes better, thinks deeper, and adapts faster — whether you're coding, writing, scheduling, or just having a chat.

By offering GPT-5 to all users, OpenAI is also doubling down on its mission: making advanced AI accessible, useful, and safe for everyone — not just enterprise power users.