What is Claude?

Claude now runs on the Claude 5 family — Sonnet 5 (launched June 30, 2026) and Opus 5 (launched July 24, 2026), with Haiku 4.5 for lighter tasks and Fable 5 available for creative use cases. Sonnet 5 notably closes most of the gap to Opus-level performance at a fraction of the cost. The thing most users notice first is the writing quality — Claude has a more natural, less formulaic tone than many other AI assistants. Its flagship models run a 1-million-token context window at standard pricing, meaning you can feed it entire books, legal contracts, or long reports for analysis. The free plan is genuinely generous. Claude Pro at $20/month ($17/month billed annually) unlocks Claude Code, Claude Design, unlimited projects, and higher usage limits, with Max plans at $100/month (5x usage) or $200/month (20x usage) for the heaviest users. It integrates with tools like Slack, and its 'Projects' feature lets you build persistent workflows.

Pros & Cons

What works well

Exceptional writing quality — reads more 'human'
1 million token context window on Sonnet 5 and Opus 5
Strong at summarising long documents
Safety-conscious design reduces harmful outputs
Good at following nuanced instructions

Things to know

No native image generation (Claude Design produces HTML/CSS prototypes, not raster images)
Trails Gemini on math and abstract-reasoning benchmarks, though it leads on coding
Occasionally over-cautious on sensitive topics