C

ChatGPT

The most versatile AI assistant — GPT-6 Astra (flagship), GPT-5.6 Sol, and GPT-5.6 Luna (free default), plus Codex, Deep Research, Agent Mode, ChatGPT Images 2.0.
9/10Updated September 13, 2026
C

Claude

The writer's AI — Fable 5.1 (GA flagship), now joined by Opus 5.5 and Sonnet 5.5 in the 5.5 family, plus Claude Code, 1M context window, and unmatched prose quality.
9/10Updated September 13, 2026
G

Gemini

Google's ecosystem AI — Gemini 3.8 Flash (fast) and 3.1 Pro (reasoning), Workspace integration, Veo video gen, Spark agents, and deep Android integration.
8/10Updated September 13, 2026
P

Perplexity

The research engine — cited answers, Comet browser, Perplexity Computer in Microsoft 365, 19-model orchestration, best value in AI.
8/10Updated September 13, 2026