GPT-5 launches with native reasoning and 1M context window
OpenAI releases GPT-5 with built-in chain-of-thought reasoning, a 1M token context window, and dramatically improved coding and math performance.
Original sourceGPT-5 represents OpenAI's biggest leap since GPT-4. The model features native reasoning capabilities that were previously only available through o1-style prompting, now built directly into the base model.
The 1M token context window means entire codebases, legal documents, and research papers can be processed in a single pass. Early benchmarks show 40% improvement on SWE-bench and near-perfect scores on graduate-level math.
Pricing is competitive at $5/M input tokens and $15/M output tokens — roughly 3x GPT-4 but with dramatically better performance. The API is available immediately with rate limits increasing over the coming weeks.
Panel Takes
The Builder
Developer Perspective
“The 1M context window changes everything for code review and refactoring. You can finally feed entire repos without chunking.”
The Skeptic
Reality Check
“Impressive benchmarks but real-world coding performance is what matters. Early testing shows it's good but not the revolution the benchmarks suggest.”
The Futurist
Big Picture
“Native reasoning in the base model is the real story. This collapses the o1/GPT distinction and simplifies the product line.”