OpenAI officially launched GPT-5 on August 7, 2025, introducing a unified AI model designed to enhance coding, reasoning, and multimodal capabilities. The release includes multiple versions: GPT-5, GPT-5 Mini, GPT-5 Nano, and GPT-5 Pro, with the latter offering research-grade intelligence and advanced reasoning. GPT-5 supports a large context window of up to 400,000 tokens and offers improved performance in health-related queries, coding, and creative tasks, with a focus on reducing hallucinations and improving safety. Pricing is tiered and competitive, with GPT-5 Nano costing $0.05 per million tokens and GPT-5 full model priced at $1.25 per million tokens for input and $10.00 per million tokens for output. Microsoft has integrated GPT-5 across its consumer, developer, and enterprise products, including Microsoft 365 Copilot, GitHub Copilot, and Azure AI Foundry, making it available for free to all users with advanced features for Plus and Pro tiers. Benchmarks show GPT-5 achieving state-of-the-art results on several platforms such as LM Arena and HealthBench, outperforming previous OpenAI models and competitors in coding and reasoning tasks, though it underperforms compared to Grok 4 Heavy in some ARC-AGI benchmarks. The model is praised for its intuitive, fast, and expert-level responses, with improvements in tool use and multimodal understanding, though some evaluations note only slight improvements in multimodality and scientific paper reproduction. OpenAI’s CEO Sam Altman emphasized GPT-5 as the best model yet for health-related questions. The launch was accompanied by a livestream event featuring OpenAI leadership and developers, highlighting GPT-5’s capabilities and integration across platforms.