Claude

What is Claude?

Claude is an AI assistant by Anthropic — founded in 2021 by former OpenAI researchers. The model family consists of four tiers: Haiku (fast, included in the free plan), Sonnet (all-rounder), Opus (for long-running coding and knowledge work), and Fable (for especially demanding reasoning). As of September 2026 those are Claude Haiku 4.5, Sonnet 5.5, Opus 5.5, and Fable 5.1; Anthropic recommends Opus 5.5 for most workloads.

Claude in our review: Strengths and weaknesses

Claude Opus 5.5 excels with long documents (1M token context – only Haiku 4.5 is still at 200K), nuanced analysis, creative writing, and security-critical code. Answers are more precise and differentiated than other models — especially for ethical reasoning and complex argumentation. Weaknesses: no native image generation feature and fewer third-party integrations than ChatGPT.

Pricing and plans

Claude is free with access to Claude Sonnet 5.5 and Haiku 4.5, web search included. Claude Pro costs $20/month billed monthly and $17/month billed annually ($200 upfront), and provides access to Opus, Sonnet, and Haiku. Claude Team costs from $20/user/month billed annually ($25/user/month billed monthly). Claude is also available via the Anthropic API on a pay-per-use basis.

Who is Claude for?

Claude Opus 5.5 is especially well-suited for writers, analysts, researchers, and developers who work with long documents, complex texts, and demanding reasoning tasks. For nuanced long-form English content, Claude is the top choice among all AI models. Head-to-head: Claude vs. Gemini and Claude vs. Perplexity. If you would rather bundle several models under one subscription than commit to a single one, Poe does exactly that.