What is GPT-5?
GPT-5 is OpenAI's flagship large language model released on August 7, 2025. It combines advanced reasoning, vision, image generation, and tool-use capabilities in a single model. As of May 2026, OpenAI recommends using the newer GPT-5.5 for the most demanding work, but GPT-5 remains widely used due to its excellent price-to-performance ratio at $1.25 per million input tokens and $10 per million output tokens.
What Can GPT-5 Do?
GPT-5 supports a 400,000 token context window with up to 128,000 output tokens per request. It handles text and image inputs natively, making it a true multimodal model. The model includes built-in reasoning support with adjustable effort levels — minimal, low, medium, and high — allowing developers to trade speed for depth depending on the task. This flexibility makes it suitable for everything from quick text classification to complex multi-step problem solving.
In practice, GPT-5 excels at software engineering tasks. It scores well on SWE-bench Verified, the industry-standard benchmark for real-world coding, and handles function calling, structured output, and agentic tool use reliably. It's the model behind many production AI applications in 2025-2026.
GPT-5 Pricing — Is It Worth It?
At $1.25 per million input tokens and $10 per million output tokens, GPT-5 sits in the mid-range of frontier model pricing. Cached inputs drop to $0.125 per million tokens — a 90% discount — making repeated prompts with shared system instructions very cost-effective. For most production workloads, GPT-5 delivers near-frontier capability at a fraction of what GPT-4 Turbo used to cost.
OpenAI also offers Batch API processing at half the standard rate for asynchronous workloads that tolerate up to 24-hour turnaround. This makes GPT-5 competitive with DeepSeek for bulk tasks.
GPT-5 vs Claude vs Gemini — Which Should You Use?
GPT-5 has the largest developer ecosystem of any frontier model, with the most tutorials, third-party integrations, and production case studies. Compared to Claude Sonnet 4.6 ($3/$15 per million tokens), GPT-5 is significantly cheaper. Compared to Gemini 3 Flash ($0.50/$3), GPT-5 costs more but delivers stronger reasoning. For teams already using OpenAI's stack, GPT-5 is the natural default. For cost-sensitive workloads, DeepSeek V4 offers comparable performance at roughly 1/4 the price.
How to Access GPT-5
GPT-5 is available via the OpenAI API using the model identifier gpt-5. Access requires a paid OpenAI account at platform.openai.com. It's also available through Microsoft Azure OpenAI Service and accessible to ChatGPT Plus subscribers at $20/month. OpenAI provides Python and Node.js SDKs, and the model follows the standard OpenAI API format compatible with most LLM frameworks.
Frequently Asked Questions
Is GPT-5 better than GPT-4o?
Yes, significantly. GPT-5 outperforms GPT-4o on coding, reasoning, and instruction following benchmarks. Its 400K context window is also 3x larger than GPT-4o's 128K. OpenAI recommends GPT-5 as the replacement for most GPT-4o use cases.
What is GPT-5's knowledge cutoff?
GPT-5's training data has a knowledge cutoff of September 30, 2024. For current events and real-time data, pair it with OpenAI's web search tool or build a RAG pipeline on top.
Can GPT-5 analyze images?
Yes. GPT-5 accepts both text and image inputs natively. You can send screenshots, photos, charts, and diagrams alongside text prompts and get intelligent responses about the visual content.