OpenAI Models

OpenAI's flagship GPT-5.6 model — its most capable system yet for complex coding, cybersecurity, and scientific reasoning, with new max reasoning effort and ultra subagent mode

The balanced mid-tier of the GPT-5.6 family — matches GPT-5.5 quality on high-volume business tasks at roughly half the price

The fastest, most cost-efficient GPT-5.6 model — strong everyday capability at OpenAI's lowest price for summarization, drafting, and routine automation

OpenAI's most capable agentic coding model for complex multi-file development tasks

OpenAI's specialized coding model for Codex agent, tuned for long-horizon multi-file work

OpenAI's highest-accuracy variant of GPT-5.5, tuned for complex research, advanced mathematics, and retrieval-heavy workflows

OpenAI's new default frontier model — sharper reasoning, native computer use, and a major leap in long-context retrieval at matched GPT-5.4 latency

OpenAI's most capable frontier model unifying reasoning, coding, and agentic computer use in a single system

Ultra-fast variant of GPT-5.3-Codex optimized for rapid iteration and quick coding tasks

OpenAI's smartest model with breakthrough benchmark performance - first model above 90% on ARC-AGI

OpenAI's unified intelligence model combining advanced reasoning with multimodal capabilities

OpenAI's first open-weight reasoning model for teams wanting to run and customize models on their own infrastructure

OpenAI's efficient open-weight reasoning model for resource-constrained deployments

OpenAI's most powerful reasoning model designed to think longer and provide the most reliable responses

OpenAI's next-generation reasoning model with breakthrough capabilities

OpenAI's most advanced small reasoning model, best-performing on AIME 2024 and 2025

OpenAI's developer-focused model with extended context capabilities and superior coding performance

OpenAI's efficient mid-size model with 1M token context at a fraction of GPT-4.1 cost

OpenAI's first nano-class model optimized for ultra-low-latency classification and autocompletion

OpenAI's cost-efficient reasoning model available on free tier with strong STEM performance

OpenAI's full reasoning model with advanced problem-solving capabilities

OpenAI's advanced reasoning model trained with reinforcement learning

OpenAI's efficient mini reasoning model optimized for STEM tasks

OpenAI's efficient small model with strong performance

OpenAI's omni-modal flagship model with native multimodal capabilities

OpenAI's latest and most efficient GPT-4 variant

OpenAI's breakthrough multimodal large language model

OpenAI's optimized and cost-effective conversational model