GPT-5-Codex codes for 7 hours

PLUS: How people really use AI, and Gemini’s viral moment

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Gen AI Art
September 17, 2025 • Estimated Reading Time: 9 minutes

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OpenAI has just unveiled GPT-5-Codex, a specialized coding model that can operate autonomously for extended periods. The new AI is designed to handle complex software projects by dynamically adjusting its own thinking time, working for over seven hours on a single task.

This release shifts AI coding assistants from simple autocomplete tools to true autonomous partners for software development. With the model already seeing a 10x increase in usage, what does this new level of automation mean for the future of coding and the role of human engineers?

Today in AI:

  • OpenAI’s new 7-hour coding AI

  • How people are actually using AI

  • Google Gemini’s viral banana feature

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What’s new? OpenAI has launched GPT-5-Codex, a specialized coding model that can work autonomously for extended periods, dynamically adjusting its thinking time to tackle complex software projects.

What matters?

  • The model outperforms GPT-5 on software engineering benchmarks and cuts token usage by 94% for simple tasks, making it both more powerful and efficient.

  • Its key feature is dynamic thinking, allowing it to spend mere seconds on simple fixes or work autonomously for over 7 hours on deep code refactors and reviews.

  • Adoption is already growing, with usage increasing 10x in the past month as companies like Duolingo and Cisco use it to catch critical bugs that other automated tools miss.

Why it matters?

This release moves AI coding assistants from simple autocompletes to true autonomous partners for complex software development. GPT-5-Codex sets a new standard for agentic coding tools, directly challenging competitors and accelerating the pace of software creation.

SAVE THESE 100 BEST GPTs

What’s new? Two new landmark reports from OpenAI and Anthropic give us the clearest picture yet of how people actually use AI. The data reveals a fascinating split between ChatGPT's explosion in personal use and a stark economic divide in Claude adoption.

What matters?

  • OpenAI's first detailed study on ChatGPT usage shows personal use is surging, with 73% of conversations being non-work related and women now making up 52% of users.

  • Anthropic's data confirms a growing divide, with wealthy countries like Singapore and Israel using Claude 4-7x more per capita than emerging economies, where usage is almost exclusively for coding.

  • User behavior is shifting from collaboration to delegating entire tasks, as people increasingly treat AI like an advanced search engine for direct answers and completed work rather than as a creative partner.3.9%.

Why it matters?

These trends confirm AI is becoming a fundamental utility for daily life, not just a niche professional tool. Understanding these real-world patterns helps developers and entrepreneurs spot new opportunities for products that serve people outside the traditional workplace.

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What’s new? Google Gemini is having a viral moment with its 'Nano Banana' feature, attracting 23 million users in just two weeks by letting people turn selfies into hyper-realistic 3D figurines.

What matters?

  • The feature's popularity goes beyond downloads, driving deep engagement with over 500 million edits powered by the viral craze.

  • Professionals are using the tool beyond personal selfies to quickly generate product mockups and test different colorways before any physical production.

  • The workflow has opened up new marketing applications, including creating lifestyle shots with specific personas or generating multiple angles for 360-degree product videos.

Why it matters?

This isn't just a fun feature; it's a major win for Google in the consumer AI race, proving it can build a product with mainstream appeal that rivals competitors. It also signals a shift toward practical, user-friendly tools that deliver immediate and tangible results..

Everything else in AI

Google released VaultGemma, the largest publicly available AI model trained with differential privacy to better protect user data while maintaining high performance.

Microsoft announced that Copilot Chat and agents are coming to the sidebar across its 365 apps like Word and Excel, allowing for more seamless AI integration into user workflows.

Reve unveiled a revamped image platform that combines AI generation, a drag-and-drop editor, and natural language commands into a single free interface.

OpenAI signals a major push into physical AI systems by aggressively hiring robotics researchers with humanoid expertise, according to a new WIRED report.

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