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Best AI for business and marketing (October 3, 2026)

ChatGPT's generalist strength and ecosystem (custom GPTs, Canvas) make it the practical default for business work; Claude wins when the deliverable is polished writing; Perplexity covers the market-research legwork with citations.

Ranking · medium confidence

ChatGPT (OpenAI) · open ↗ · Best all-round business assistant: strategy drafts, deck outlines, custom GPTs for repeat workflows.Free tier: a GPT model with limited messages, then a smaller model
(Anthropic) · open ↗ · First pick when the output is client-facing text that has to read well.Free tier: a Sonnet model (usage limits vary by demand)
(Perplexity AI) · open ↗ · Market and competitor research with citations - the credible-sources half of business work.Free tier: Sonar (unlimited basic cited searches + a few Pro searches a day)
(Google) · open ↗ · Natural choice if your documents, mail and calendar live in Google Workspace.Free tier: a Flash model (the most generous free tier, with a monthly Deep Research allowance)

Medium confidence: based on adjacent benchmarks plus app features. Live where a public measurement exists (official Artificial Analysis indices, refreshed automatically), editorial where it does not. Rankings shift fast - treat this as guidance, not gospel.

Sources: Artificial Analysis Intelligence, Coding and Agentic indices (official, read live via OpenRouter) · Plans and free-tier comparison (June 2026) · Perplexity plans, features and Sonar (2026)

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