Models

Fast variant of GPT-6 Astra for low-latency assistance and high-volume workloads.

GPT-6 Astra is OpenAI's most capable model for complex reasoning, coding, computer use, research, and document creation.

Balanced GPT-5.6 model for capable, cost-efficient everyday work

Cost-efficient GPT-5.6 model for fast, high-volume workloads

Frontier GPT-5.6 model for complex professional work, coding, and agentic workflows

Compact GPT model for low-latency assistance and high-volume workloads

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

Highest-accuracy GPT-5.5 tier for slower, precision-heavy reasoning and coding

Strong small GPT for coding subagents, quick tool use, and high-volume work

Cheapest GPT-5.4 lane for simple routing, extraction, and bulk automation

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

More exact GPT-5.4 tier for demanding professional reasoning and agent tasks

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

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

Higher-accuracy GPT-5.2 variant for tougher reasoning and review workflows

Code-specialist GPT for repository edits, reviews, and long-running software agents

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

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

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

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

Higher-accuracy GPT-5 tier for tough analysis, coding reviews, and planning

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

Chat-tuned GPT model for conversational assistance, writing, and tool workflows

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

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

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

High-effort o3 tier for difficult technical reasoning and careful answers

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

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

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

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

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

O-series reasoning model for hard analysis, math, coding, and planning

Smaller o-series reasoner for economical coding, math, and planning tasks

O-series reasoning model for hard analysis, math, coding, and planning

Research model for long-horizon investigation, synthesis, and analytical reports

Research model for long-horizon investigation, synthesis, and analytical reports

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...

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...

GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

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....

GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...

The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and provide...

GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K...

No provider description is available for this model yet.

No provider description is available for this model yet.

GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks. It supports text and image inputs and is designed for low-latency...

OpenAI o3-mini-high is the same model as [o3-mini](/openai/o3-mini) with reasoning_effort set to high. o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and...

No provider description is available for this model yet.

GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode