How AI Gets Smarter Faster: GPT-5 Codex Self-Upgrade
- Elena Kovács

- Dec 15, 2025
- 7 min read
The tech landscape is witnessing an unprecedented acceleration. Artificial intelligence, once a slow, deliberate climb, is now demonstrating a remarkable capacity for AI self-improvement. This isn't just incremental tweaks; it's the AI tools themselves becoming the architects of their evolution, particularly exemplified by the ongoing upgrades of OpenAI's Codex system leading towards GPT-5. This AI self-improvement loop is fundamentally reshaping innovation, intensifying competition, and creating ripple effects across industries, from software development to autonomous vehicles and regulatory challenges. Understanding this dynamic is crucial for anyone following the AI story.
The AI Self-Improvement Trend

Artificial intelligence isn't just getting smarter; it's learning how to get smarter faster. The concept of AI self-improvement involves systems capable of refining their own algorithms and performance based on feedback and usage data. This creates a positive feedback loop where the more an AI is used and evaluated, the better it becomes at subsequent tasks and even at enhancing its own code and decision-making processes. This shift moves AI development from primarily human-driven cycles towards a more autonomous, rapid iteration model. The implications for speed of innovation and competitive dynamics are profound, marking a significant departure from earlier technological paradigms.
OpenAI Codex: AI Writing Code

OpenAI's Codex, a powerful AI model trained primarily on GitHub repositories, has become a cornerstone in demonstrating AI self-improvement. Codex excels at writing and understanding code, effectively acting as a programmer itself. Crucially, OpenAI is now feeding Codex's outputs and performance data back into the system to train newer, more capable versions. As detailed in recent analysis, this includes leveraging GPT-5 Codex specifically to improve the underlying AI tool itself. This internal feedback mechanism allows Codex to become more efficient, generate better code, and even debug its own outputs, showcasing a tangible form of AI self-improvement that's directly impacting software development and potentially accelerating the creation of complex applications built on AI foundations.
Mirelo Raises $41M for AI Video Fixes

The quest for perfect video content is another arena where AI self-improvement principles are being applied. AI-generated video, while impressive, often suffers from issues like awkward silent moments or unnatural movements. Start-up Mirelo is tackling this specific problem head-on. By raising a substantial $41 million in funding from Index and Andreessen Horowitz (a16z), Mirelo is developing sophisticated AI tools designed to automatically detect and fix these flaws in AI video outputs. This represents a targeted application of AI to improve the quality and reliability of its own derivative products, highlighting how businesses are investing in solutions driven by the principles of continuous enhancement and AI self-improvement to meet consumer expectations for seamless media experiences.
Self-Driving Car Software: Rapid AI Integration
The integration of AI into complex systems like autonomous vehicles is another domain where rapid learning and adaptation are critical. Companies developing self-driving car software are increasingly reliant on AI for perception, decision-making, and navigation. The ability of these AI systems to quickly process vast amounts of sensor data and learn from driving scenarios is paramount. Furthermore, the feedback loop from real-world testing (simulation and actual deployments) allows these AI models to iteratively improve their safety and performance. This rapid AI self-improvement cycle is crucial for overcoming the immense technical and regulatory hurdles to widespread autonomous vehicle adoption, pushing the boundaries of what's possible on the roads.
GPT-5.2: Testing AI Limits
OpenAI isn't just refining Codex; it's pushing the boundaries of language models themselves. The recent emergence of GPT-5.2, following initial reports of GPT-5, marks another step in testing the limits of AI self-improvement. Evaluations against text-image tests reveal mixed results, indicating that while language models are advancing rapidly in understanding and generating text, integrating multimodal capabilities seamlessly remains a challenge. This testing phase is integral to the AI self-improvement process. By rigorously evaluating newer models like GPT-5.2 against specific tasks (like accurately interpreting and generating images from text prompts), developers can identify weaknesses and feed those learnings back into the training loop, forcing the AI to get smarter faster and closer to achieving more robust, versatile intelligence.
Crypto Regulation: Emerging Policy Challenges
The rapid pace of AI self-improvement and the emergence of powerful AI tools like advanced Codex and GPT models introduce complex regulatory challenges, particularly in sensitive areas like finance. Cryptocurrency regulation is a prime example. As AI tools potentially capable of drafting complex legal code, analyzing market trends, or even interacting with financial systems evolve so quickly through self-upgrades, regulators face a daunting task. The speed at which these tools improve makes it difficult for policymakers to keep pace, potentially leading to unforeseen risks or loopholes. Ensuring safety, fairness, and transparency in rapidly evolving AI systems, including those related to financial assets like crypto, is a critical frontier in the broader conversation about AI self-improvement and responsible innovation.
Microsoft's Missed Recognition: Competition in AI
The competitive landscape in AI is heating up, and the speed of AI self-improvement is a key driver. While Microsoft invested heavily in OpenAI and its AI tools, reports suggesting that Microsoft CEO Satya Nadella and other company leaders were notably absent from Time's Person of the Year list dedicated to the architects of AI highlight the intense focus outside the company. This underscores the fierce competition not just between major tech giants but also among specialized AI startups (like Mirelo) and the rapid advancements being made. The race to build the best, fastest, and most capable AI systems fuels the AI self-improvement engines, pushing boundaries but also demanding constant vigilance and adaptation from industry leaders and participants alike.
What IT Can Learn from These Trends
The accelerating AI self-improvement capabilities observed in systems like Codex and GPT models offer valuable lessons for IT departments and technology professionals across industries. Firstly, expect AI to become more autonomous in identifying and fixing operational issues, potentially reducing human intervention needs but also requiring new skill sets to manage and verify these AI-driven solutions. Secondly, be prepared for the rapid iteration cycles; tools and systems built on or interacting with AI might need more frequent updates and adjustments as the underlying AI gets smarter. Thirdly, data security and governance become even more critical as internal feedback loops for AI self-improvement could potentially expose sensitive corporate data if not properly managed. Finally, understanding and potentially leveraging AI self-improvement principles could become a key competitive advantage for IT teams aiming to deploy cutting-edge solutions efficiently.
Here’s a quick guide to navigating the current wave of AI advancements:
Understand the Feedback Loop: AI systems improving themselves rely on vast amounts of data and feedback.
Anticipate Rapid Changes: The pace of AI development is quickening, requiring agility in strategy and adoption.
Focus on Integration: Success often lies in how well AI self-improvement capabilities integrate with existing workflows.
Monitor Ethical Implications: As AI gets smarter faster, ongoing ethical oversight and bias mitigation are essential.
Start Small: Pilot AI tools internally before large-scale deployment to understand their evolving nature.
Establish Clear Governance: Define protocols for data used in AI feedback loops, ensuring security and compliance.
Upskill Teams: Equip your team with skills to collaborate with, manage, and interpret AI-driven systems.
Prioritize Transparency: Even as AI self-improves, maintain transparency about its capabilities and limitations.
Risk Flags:
Security Vulnerabilities: Rapid self-upgrades might introduce unforeseen security flaws.
Bias Amplification: AI learning from biased data could worsen existing inequalities faster.
Job Displacement: The accelerating pace might disrupt job markets faster than adaptation can occur.
Regulatory Lag: Policymakers may struggle to keep up with the speed of innovation.
Key Takeaways
AI systems are increasingly capable of autonomous improvement, significantly accelerating innovation cycles.
OpenAI's Codex demonstrates this through self-feedback loops enhancing its coding capabilities.
Startups like Mirelo are applying similar principles to solve specific AI-generated content quality issues.
The rapid integration of AI in complex systems like autonomous vehicles relies heavily on quick learning.
Newer models like GPT-5.2 are being rigorously tested, pushing the boundaries of AI capabilities.
This acceleration introduces new regulatory challenges, particularly in areas like finance and crypto.
The intense competition fuels the AI self-improvement race, demanding agility from IT and businesses.
Organizations must adapt by focusing on integration, ethical oversight, and upskilling to leverage this trend.
Frequently Asked Questions (FAQs)
Q1: What exactly is meant by 'AI self-improvement' in this context? A: AI self-improvement refers to AI systems that can analyze their own performance, learn from feedback and usage data, and subsequently enhance their algorithms or capabilities without direct human intervention in the core improvement process. It's a feedback loop where the AI gets smarter based on its own operation.
Q2: Is GPT-5 Codex truly capable of improving itself? A: Yes, according to reports, OpenAI is actively using Codex, including versions leading towards GPT-5, to generate code and feedback specifically for training and refining the AI model itself. This is a concrete example of AI self-improvement in action.
Q3: What are the main risks associated with rapid AI self-improvement? A: Key risks include potential security vulnerabilities introduced during rapid updates, the possibility of bias being amplified if training data is skewed, faster job displacement than society can adapt to, and the challenge of keeping regulations and ethical guidelines pace with the speed of development.
Q4: How can companies prepare for the impact of accelerating AI? A: Companies should focus on building flexible IT infrastructures, investing in employee upskilling for AI collaboration, establishing robust data governance and security protocols, and engaging with policymakers to shape future regulations proactively.
Q5: Are tools like Mirelo representative of broader AI self-improvement trends? A: Absolutely. Mirelo's focus on using AI to fix flaws in other AI outputs is a prime example of applying AI self-improvement principles to enhance the quality and reliability of AI-generated content, reflecting a wider trend across the industry.
Sources
[How OpenAI is using GPT-5 Codex to improve the AI tool itself](https://arstechnica.com/ai/2025/12/how-openai-is-using-gpt-5-codex-to-improve-the-ai-tool-itself/)
[Mirelo Raises $41M from Index and a16z to Solve AI Video's Silent Problem](https://techcrunch.com/2025/12/15/mirelo-raises-41m-from-index-and-a16z-to-solve-ai-videos-silent-problem/)
[HyprLabs Wants to Build a Self-Driving Robot Super Fast](https://www.wired.com/story/hyprlabs-wants-to-build-a-self-driving-robot-super-fast/)
[Text-image tests: OpenAI GPT-5.2 shows mixed results](https://www.zdnet.com/article/text-image-tests-openai-gpt-5-2-mixed-results/)
[The Times Person of the Year: Why Microsoft and CEO Satya Nadella are embarrassingly absent](https://www.windowscentral.com/artificial-intelligence/times-person-of-the-year-is-all-about-the-architects-of-ai-and-microsoft-and-ceo-satya-nadella-are-embarrassingly-absent)




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