Fall 2025 Edition

The Frontier Models

Tracking the latest advancements in US-based Artificial Intelligence as we close out 2025.

Google DeepMind Released Nov '25

Gemini 3

Google's most powerful iteration yet. Built on TPU v6 infrastructure, it introduces "Deep Think" capabilities and native agentic workflows integrated directly into Workspace.

Context Window Unlimited (Ring Attn)
Key Strength Multimodal / Agentic
Released: November 18, 2025
Anthropic Released Nov '25

Claude 4.5 Opus

The new king of coding. Opus 4.5 features "Extended Thinking" for complex multi-step reasoning and is widely considered the safest frontier model available.

Context Window 500k Tokens
Key Strength Coding / Reasoning
Released: November 24, 2025
OpenAI Stable

GPT-5

A massive leap in reasoning capabilities over GPT-4o. GPT-5 (Project Orion) unifies "slow thinking" (Reasoning) and "fast thinking" into a single adaptive interface.

Context Window 256k Tokens
Key Strength General Intelligence
Released: August 7, 2025
xAI Released Nov '25

Grok 4.1

Now with full real-time visual understanding of X (Twitter) data. Grok 4.1 focuses on "unhinged" creativity and high-speed inference for real-time applications.

Context Window 1 Million Tokens
Key Strength Real-time Data / Speed
Released: November 17, 2025
Meta Open Weights

Llama 4 (405B)

The open-source champion. Llama 4 introduces a Mixture-of-Experts architecture that rivals proprietary models while running efficiently on enterprise hardware.

Context Window 128k Tokens
Key Strength Open Source / Fine-tuning
Released: April 5, 2025
OpenAI Efficient

o3-mini

A highly efficient reasoning model that replaced o1-mini. Optimized for STEM tasks, code generation, and low-latency agentic loops.

Context Window 128k Tokens
Key Strength Math / Science Reasoning
Released: September 2025