Model Watch
Writing filed under Model Watch.
Opir made guardrails look like classifiers again
Sonnet 4.5 and Gemini 3 made coding the frontier battleground
Claude 4 and GPT-5 made agent work a maintenance problem
DeepSeek, Kimi, and MiniMax made open reasoning cheaper
Qwen 2.5 and Qwen3 made open models feel global
Spring 2025 split reasoning into products
o1 and Gemini 2.0 pushed agents toward the default
LFM made small models an architecture question
Llama 3 and 3.1 made open weight the default baseline
GPT-4o and Claude 3.5 Sonnet compressed the frontier
GLiNER turned entity extraction into a small-model job
Gemma and Phi made small models feel serious again
Claude 3 gave the model picker real tradeoffs
Gemini 1.5 made long context the main event
Mixtral made open weights feel usefully weird
Gemini 1 arrived with a multimodal reset
Google's Gemini 1.0 launch made the next model fight feel multimodal, tiered, and product-shaped.