Frontier AI in 2026: a crash course
A crash course on frontier AI in 2026: how reasoning models and AI agents work, who builds them, and where the frontier stands now.
Frontier AI
Reasoning models, AI agents and the frontier of large-scale AI systems: what they can do and how they are built.
Frontier AI tracker: reasoning models and agents
A dated timeline of frontier AI milestones in reasoning models and AI agents, from o1 and DeepSeek-R1 to GPT-6, Claude Mythos and Gemini 4.
ARC-AGI
Claude Mythos
DeepSeek-R1
METR
Model Context Protocol (MCP)
OpenAI o1
SWE-bench
Test-time compute
How fast are AI agents really improving?
Do reasoning models really reason? The debate over their limits
How AI agents work
How frontier AI capabilities are measured
How large language models work
How reasoning models work