Claude

Overview

Claude is Anthropic's flagship AI assistant. As of May 2026, Claude Opus 4.6-thinking and 4.7-thinking sit at the top of the LMArena Chatbot Arena text leaderboard (Elo 1500+), making Claude the model most experienced engineers reach for first on hard tasks. The family covers three tiers. Opus is the largest model with the strongest reasoning, coding, and tool-use abilities — the 'thinking' variants spend extra compute on complex problems before answering. Sonnet is the workhorse: fast enough for most production workloads, with quality close to Opus on routine tasks. Haiku is built for high-volume, low-latency jobs like classification, extraction, and chat. Access is multi-channel. Free users get a daily Claude allowance on claude.ai. Pro ($20/mo) raises limits and unlocks Opus. Max plans ($100-200/mo) target heavy power users. Developers access all models via the Anthropic API with usage-based pricing. Claude is also distributed through Amazon Bedrock and Google Vertex AI for enterprise procurement. Where Claude wins: code generation and refactoring, large-document analysis (200K-context), nuanced writing, function calling and tool use. Where it lags: real-time web search (no native browsing), image generation (text-only output), and voice mode parity vs ChatGPT.