Models

Open-weight 117B MoE model (5.1B active) achieving near o4-mini reasoning. Apache 2.0 licensed, runs on a single 80GB GPU.

GPT-4.1, a proprietary OpenAI model available via OpenRouter.

GPT-4.1 Mini, a proprietary OpenAI model available via OpenRouter.

GPT-4.1 Nano, a proprietary OpenAI model available via OpenRouter.

OpenAI's flagship multimodal model with strong reasoning, coding, and vision capabilities.

Cost-efficient smaller GPT-4o variant for lightweight tasks.

GPT-5, a proprietary OpenAI model available via OpenRouter.

GPT-5 variant optimized for code generation and software engineering.

Compact GPT-5 variant for lightweight tasks and rapid prototyping.

Ultra-lightweight GPT-5 for high-speed, low-cost text generation.

GPT-5 Pro, a proprietary OpenAI model available via OpenRouter.

GPT-5.1, a proprietary OpenAI model available via OpenRouter.

GPT-5.1 code-optimized variant.

GPT-5.2 general-purpose model.

GPT-5.2 code-optimized variant.

GPT-5.2 Pro, a proprietary OpenAI model available via OpenRouter.

GPT-5.3 code-optimized variant.

OpenAI's latest frontier model combining reasoning, coding, and agentic workflows.

Latest GPT-5.4 code-optimized variant with industry-leading coding capabilities.

Compact GPT-5.4 variant balancing capability and cost.

Ultra-lightweight GPT-5.4 for high-speed, low-cost tasks.

Highest capability GPT-5.4 tier with maximum reasoning depth. Premium pricing.

GPT-5.5, a proprietary OpenAI model available via OpenRouter.

GPT-5.5 Pro, a proprietary OpenAI model available via OpenRouter.

OpenAI's open-weight 20B model in the gpt-oss family — small, cheap, and self-hostable.

Reasoning-focused model with step-by-step deliberation for complex math, coding, and science tasks.

Most capable reasoning model in OpenAI's lineup with extended thinking for maximum reliability.

Lightweight reasoning model balancing chain-of-thought rigor with speed and cost efficiency.