GPT-5 for Developers: What Changes for Free, Plus, and API Users GPT-5 for Developers: What Changes for Free, Plus, and API Users Table of Contents Hide GPT-5 officially launched on August 7, 2025 , and your tech feed is overflowing with feature lists. But as a developer, you’re not just here for hype—you want clear answers: Should you upgrade? Will your existing API integrations break? What’s genuinely useful for your workflow? This guide breaks down what GPT-5 really means for you —whether you’re a free ChatGPT user , a Plus subscriber , or an API developer . The Big Picture: What Makes GPT-5 Different GPT-5 is OpenAI’s most advanced AI model , excelling in coding, reasoning, tool calling, multimodal tasks, and long-form generation. The biggest shift? Unified intelligence with: Advanced reasoning – multi-step problem solving Multimodal input – text, code, image, and structured data Task execution – tool calling,...