Models

Default frontier GPT for coding, computer use, research, and knowledge work

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...

Agent-ready GPT for coding and computer-use workflows at a lower cost

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...

Reliable GPT generation for broad coding, writing, and tool-assisted product work

GPT-5.2 is the latest frontier-grade model in the GPT-5 series, offering stronger agentic and long context perfomance compared to GPT-5.1. It uses adaptive reasoning to allocate computation dynamically, responding quickly...

GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy...

Original GPT-5 workhorse for reasoning, coding, writing, and tool workflows

Sharper GPT-5 generation for coding, product work, and tool-assisted tasks

GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...

Coding-optimized GPT model for repository edits, reviews, and agentic software work

Codex GPT for repository edits, code review, and practical software agents

GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost....

Small GPT-5 for responsive agents, coding help, and everyday automation

Coding-optimized GPT model for repository edits, reviews, and agentic software work

GPT-4.1 is a flagship large language model optimized for advanced instruction following, real-world software engineering, and long-context reasoning. It supports a 1 million token context window and outperforms GPT-4o and...

Long-lived GPT workhorse for coding, instruction following, and production apps

GPT-4.1 Mini is a mid-sized model delivering performance competitive with GPT-4o at substantially lower latency and cost. It retains a 1 million token context window and scores 45.1% on hard...

Affordable GPT-4.1 lane for fast coding help and structured extraction

GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...

Tiny GPT-5 lane for routing, extraction, classification, and bulk jobs

o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....

Deliberate o-series reasoner for hard math, coding, and multi-step analysis

Fast o-series model for compact reasoning, coding, and tool use

OpenAI o4-mini is a compact reasoning model in the o-series, optimized for fast, cost-efficient performance while retaining strong multimodal and agentic capabilities. It supports tool use and demonstrates competitive reasoning...

For tasks that demand low latency, GPT‑4.1 nano is the fastest and cheapest model in the GPT-4.1 series. It delivers exceptional performance at a small size with its 1 million...

Tiny GPT-4.1 option for classification, routing, and very high-volume tasks