Best long-context reasoning, writing, and Artifacts.
Claude Sonnet 5 / Opus 5 dominate long-context analysis, careful writing, and code review. Projects + Artifacts make it the editorial copilot of choice.
Best for
Recommended workflow
Step 1
Create a Project
Step 2
Drop in PDFs/briefs
Step 3
Use Artifacts for drafts
Step 4
Iterate with Skills
OpenAI
The default consumer AI; GPT-5.5 reasoning + agents + image.
Native Workspace integration, 2M-token context, Veo + Imagen built in.
xAI
Real-time X data + uncensored research; fastest at breaking news.
Meta
Best open-weight family; self-host for privacy and price.
Mistral AI
European, multilingual, GDPR-friendly frontier model.
DeepSeek
Open-weight reasoner that matches GPT-5 on math/code at 1/20 cost.