OpenAI has officially launched GPT-5, the company’s most powerful AI model to date, representing what CEO Sam Altman calls “a significant step toward AGI.” The new model demonstrates remarkable improvements across every benchmark, particularly in complex reasoning, mathematical problem-solving, and multi-step coding tasks.

What’s New in GPT-5

GPT-5 introduces a new architecture that allows the model to reason more systematically before producing a response. Early benchmarks show GPT-5 scoring in the 95th percentile on the bar exam, outperforming 90% of human PhD candidates on graduate-level science questions, and solving competition-level mathematics problems that stumped previous models entirely.

The model’s context window has been expanded to 500,000 tokens — enough to process entire codebases or books in a single prompt. Multimodal capabilities have been significantly enhanced, with GPT-5 able to analyze charts, diagrams, handwriting, and complex visual information with near-human accuracy.

Availability and Pricing

GPT-5 is rolling out to ChatGPT Pro subscribers immediately, with access for ChatGPT Plus users following within weeks. API access begins at $15 per million input tokens — roughly 3x the cost of GPT-4o, reflecting the substantial computational resources required.

For developers building AI-powered applications, GPT-5’s superior reasoning capabilities could unlock use cases that were previously impractical. Autonomous agents, complex data analysis pipelines, and sophisticated code generation are expected to be early beneficiaries.

The Competitive Landscape

GPT-5’s launch comes at a pivotal moment, with Google’s Gemini Ultra 2 and Anthropic’s Claude 4 both reportedly in final testing. The AI model race is now squarely focused on reasoning depth rather than raw parameter count — a shift that favors companies with strong reinforcement learning research.