📚 Glossary
Sonnet
In one line: Anthropic's mid-tier Claude model — the flagship product line that most people use day-to-day.
Sonnet is the middle tier of Anthropic's Claude model lineup, sitting between Haiku (fast/cheap) and Opus (most capable). It's the daily-driver flagship — the model most people mean when they say 'Claude'.
Versions on AskAI.free:
- Claude Sonnet 3.5 — June 2024, free tier
- Claude Sonnet 3.7 — early 2025, faster + cheaper
- Claude Sonnet 4 — flagship, best quality
See Sonnet 4 vs 3.7 for an upgrade decision.
See it in action — ask any AI about sonnet on AskAI.free.
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