Claude is Anthropic's AI assistant, known for being helpful, harmless, and honest. Strong reasoning and coding capabilities with large context windows.
February 17, 2026
Anthropic introduced Claude Sonnet 4.6, described as delivering frontier performance across coding, agents, and professional work at scale. This represents a new version in the Sonnet model line.
February 24, 2025
Extended thinking mode introduced. Biggest leap in coding and reasoning. Computer use improved.
June 20, 2024
Outperforms Claude 3 Opus at twice the speed. Sets new benchmark for coding tasks.
March 4, 2024
Most capable Claude model at launch. Beats GPT-4 on most benchmarks. Three tier family introduced.
July 11, 2023
Major upgrade. Context window expanded to 100K tokens. Improved reasoning and safer responses.
March 14, 2023
Initial public release of Claude. Focused on being helpful, harmless and honest.